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ckpts/universal/global_step20/zero/10.attention.query_key_value.weight/exp_avg_sq.pt

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ckpts/universal/global_step20/zero/18.mlp.dense_4h_to_h.weight/exp_avg.pt

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ckpts/universal/global_step20/zero/20.mlp.dense_4h_to_h.weight/exp_avg.pt

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ckpts/universal/global_step20/zero/20.mlp.dense_4h_to_h.weight/exp_avg_sq.pt

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ckpts/universal/global_step20/zero/20.mlp.dense_4h_to_h.weight/fp32.pt

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ckpts/universal/global_step20/zero/26.mlp.dense_h_to_4h.weight/exp_avg.pt

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venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/all.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#if !defined(_MSC_VER) && __cplusplus < 201703L
+#error C++17 or later compatible compiler is required to use PyTorch.
+#endif
+
+#include <torch/autograd.h>
+#include <torch/cuda.h>
+#include <torch/data.h>
+#include <torch/enum.h>
+#include <torch/fft.h>
+#include <torch/jit.h>
+#include <torch/linalg.h>
+#include <torch/mps.h>
+#include <torch/nested.h>
+#include <torch/nn.h>
+#include <torch/optim.h>
+#include <torch/serialize.h>
+#include <torch/sparse.h>
+#include <torch/special.h>
+#include <torch/types.h>
+#include <torch/utils.h>
+#include <torch/version.h>
+#include <torch/xpu.h>

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/arg.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <utility>
+
+#define TORCH_ARG(T, name)                                                \
+ public:                                                                  \
+  inline auto name(const T& new_##name) -> decltype(*this) { /* NOLINT */ \
+    this->name##_ = new_##name;                                           \
+    return *this;                                                         \
+  }                                                                       \
+  inline auto name(T&& new_##name) -> decltype(*this) { /* NOLINT */      \
+    this->name##_ = std::move(new_##name);                                \
+    return *this;                                                         \
+  }                                                                       \
+  inline const T& name() const noexcept { /* NOLINT */                    \
+    return this->name##_;                                                 \
+  }                                                                       \
+  inline T& name() noexcept { /* NOLINT */                                \
+    return this->name##_;                                                 \
+  }                                                                       \
+                                                                          \
+ private:                                                                 \
+  T name##_ /* NOLINT */

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/autograd.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <torch/csrc/autograd/autograd.h>
+#include <torch/csrc/autograd/autograd_not_implemented_fallback.h>
+#include <torch/csrc/autograd/custom_function.h>

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/cuda.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <torch/csrc/Export.h>
+
+#include <cstddef>
+#include <cstdint>
+
+namespace torch {
+namespace cuda {
+
+/// Returns the number of CUDA devices available.
+size_t TORCH_API device_count();
+
+/// Returns true if at least one CUDA device is available.
+bool TORCH_API is_available();
+
+/// Returns true if CUDA is available, and CuDNN is available.
+bool TORCH_API cudnn_is_available();
+
+/// Sets the seed for the current GPU.
+void TORCH_API manual_seed(uint64_t seed);
+
+/// Sets the seed for all available GPUs.
+void TORCH_API manual_seed_all(uint64_t seed);
+
+/// Waits for all kernels in all streams on a CUDA device to complete.
+void TORCH_API synchronize(int64_t device_index = -1);
+
+} // namespace cuda
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data.h

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+#pragma once
+
+#include <torch/data/dataloader.h>
+#include <torch/data/datasets.h>
+#include <torch/data/samplers.h>
+#include <torch/data/transforms.h>
+
+// Some "exports".
+namespace torch {
+namespace data {
+using datasets::BatchDataset;
+using datasets::Dataset;
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/dataloader_options.h

@@ -0,0 +1,65 @@
+#pragma once
+
+#include <torch/arg.h>
+#include <torch/types.h>
+
+#include <chrono>
+#include <cstddef>
+
+namespace torch {
+namespace data {
+
+/// Options to configure a `DataLoader`.
+struct DataLoaderOptions {
+  DataLoaderOptions() = default;
+  /* implicit */ DataLoaderOptions(size_t batch_size)
+      : batch_size_(batch_size) {}
+
+  /// The size of each batch to fetch.
+  TORCH_ARG(size_t, batch_size) = 1;
+
+  /// The number of worker threads to launch. If zero, the main thread will
+  /// synchronously perform the data loading.
+  TORCH_ARG(size_t, workers) = 0;
+
+  /// The maximum number of jobs to enqueue for fetching by worker threads.
+  /// Defaults to two times the number of worker threads.
+  TORCH_ARG(optional<size_t>, max_jobs);
+
+  /// An optional limit on the time to wait for the next batch.
+  TORCH_ARG(optional<std::chrono::milliseconds>, timeout);
+
+  /// Whether to enforce ordering of batches when multiple are loaded
+  /// asynchronously by worker threads. Set to `false` for better performance if
+  /// you do not care about determinism.
+  TORCH_ARG(bool, enforce_ordering) = true;
+
+  /// Whether to omit the last batch if it contains less than `batch_size`
+  /// examples.
+  TORCH_ARG(bool, drop_last) = false;
+};
+
+/// Like `DataLoaderOptions`, but without any unconfigured state.
+/// `DataLoaderOptions` has some options that depend on other options
+/// (`max_jobs` => `2 * workers`). In the spirit of properly using the C++ type
+/// system, `DataLoaderOptions` allows only setting values. To access values,
+/// you must create a `FullDataLoaderOptions` from a `DataLoaderOptions`
+/// instance, which will do any necessary coalescing.
+struct FullDataLoaderOptions {
+  explicit FullDataLoaderOptions(DataLoaderOptions options)
+      : batch_size(options.batch_size()),
+        workers(options.workers()),
+        max_jobs(options.max_jobs().value_or(2 * workers)),
+        timeout(options.timeout()),
+        enforce_ordering(options.enforce_ordering()),
+        drop_last(options.drop_last()) {}
+
+  size_t batch_size;
+  size_t workers;
+  size_t max_jobs;
+  optional<std::chrono::milliseconds> timeout;
+  bool enforce_ordering;
+  bool drop_last;
+};
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/datasets/base.h

@@ -0,0 +1,103 @@
+#pragma once
+
+#include <torch/data/example.h>
+#include <torch/types.h>
+
+#include <c10/util/ArrayRef.h>
+
+#include <cstddef>
+#include <cstdint>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+namespace torch {
+namespace data {
+namespace datasets {
+template <typename S, typename T>
+class MapDataset;
+template <typename D, typename T>
+MapDataset<D, T> map(D, T); // NOLINT
+} // namespace datasets
+} // namespace data
+} // namespace torch
+
+namespace torch {
+namespace data {
+namespace datasets {
+namespace detail {
+template <typename T>
+struct is_optional : std::false_type {};
+template <typename T>
+struct is_optional<optional<T>> : std::true_type {};
+} // namespace detail
+
+/// A dataset that can yield data only in batches.
+template <
+    typename Self,
+    typename Batch = std::vector<Example<>>,
+    typename BatchRequest = ArrayRef<size_t>>
+class BatchDataset {
+ public:
+  using SelfType = Self;
+  using BatchType = Batch;
+  using BatchRequestType = BatchRequest;
+  constexpr static bool is_stateful = detail::is_optional<BatchType>::value;
+
+  virtual ~BatchDataset() = default;
+
+  /// Returns a batch of data given an index.
+  virtual Batch get_batch(BatchRequest request) = 0;
+
+  /// Returns the size of the dataset, or an empty optional if it is unsized.
+  virtual optional<size_t> size() const = 0;
+
+  /// Creates a `MapDataset` that applies the given `transform` to this dataset.
+  template <typename TransformType>
+  MapDataset<Self, TransformType> map(TransformType transform) & {
+    return datasets::map(static_cast<Self&>(*this), std::move(transform));
+  }
+
+  /// Creates a `MapDataset` that applies the given `transform` to this dataset.
+  template <typename TransformType>
+  MapDataset<Self, TransformType> map(TransformType transform) && {
+    return datasets::map(
+        std::move(static_cast<Self&>(*this)), std::move(transform));
+  }
+};
+
+/// A dataset that can yield data in batches, or as individual examples.
+///
+/// A `Dataset` is a `BatchDataset`, because it supports random access and
+/// therefore batched access is implemented (by default) by calling the random
+/// access indexing function for each index in the requested batch of indices.
+/// This can be customized.
+template <typename Self, typename SingleExample = Example<>>
+class Dataset : public BatchDataset<Self, std::vector<SingleExample>> {
+ public:
+  using ExampleType = SingleExample;
+
+  /// Returns the example at the given index.
+  virtual ExampleType get(size_t index) = 0;
+
+  /// Returns a batch of data.
+  /// The default implementation calls `get()` for every requested index
+  /// in the batch.
+  std::vector<ExampleType> get_batch(ArrayRef<size_t> indices) override {
+    std::vector<ExampleType> batch;
+    batch.reserve(indices.size());
+    for (const auto i : indices) {
+      batch.push_back(get(i));
+    }
+    return batch;
+  }
+};
+
+/// A `StreamDataset` represents a dataset that is a potentially infinite
+/// stream. It takes as batch index only a number, which is the batch size, and
+/// yields that many elements from the stream.
+template <typename Self, typename Batch = std::vector<Example<>>>
+using StreamDataset = BatchDataset<Self, Batch, /*BatchRequest=*/size_t>;
+} // namespace datasets
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/datasets/chunk.h

@@ -0,0 +1,529 @@
+#pragma once
+
+#include <c10/util/irange.h>
+#include <torch/arg.h>
+#include <torch/data/datasets/stateful.h>
+#include <torch/data/samplers.h>
+#include <queue>
+#include <thread>
+
+#include <torch/serialize.h>
+
+namespace torch {
+namespace data {
+namespace datasets {
+
+/// Interface for chunk reader, which performs data chunking and reading of
+/// entire chunks.
+///
+/// A chunk could be an entire file, such as an audio data file or an image,
+/// or part of a file in the case of a large text-file split based on seek
+/// positions.
+template <
+    typename ExampleType_,
+    typename ChunkType_ = std::vector<ExampleType_>>
+class ChunkDataReader {
+ public:
+  virtual ~ChunkDataReader() = default;
+
+  using ChunkType = ChunkType_;
+  using ExampleType = ExampleType_;
+
+  /// Read an entire chunk.
+  virtual ChunkType read_chunk(size_t chunk_index) = 0;
+
+  /// Returns the number of chunks available in this reader.
+  virtual size_t chunk_count() = 0;
+
+  /// This will clear any internal state associate with this reader.
+  virtual void reset() = 0;
+};
+
+namespace detail {
+/// BatchDataBuffer manages a queue of UnwrappedBatchData. After a new chunk is
+/// loaded, BatchDataBuffer splits it into small batches and push them into the
+/// queue. When get_batch is called from data loader, it pops cached batches and
+/// return. If the cache is empty, it either waits to load more chunks or return
+/// null if all chunks are loaded.
+template <
+    typename UnwrappedBatch,
+    typename ExampleSampler = samplers::RandomSampler>
+class BatchDataBuffer {
+ public:
+  using UnwrappedBatchType = UnwrappedBatch;
+  using BatchType = torch::optional<UnwrappedBatchType>;
+  using BatchRequestType = typename ExampleSampler::BatchRequestType;
+
+  BatchDataBuffer(
+      size_t batch_size,
+      ExampleSampler& example_sampler,
+      size_t queue_capacity)
+      : batch_size_(batch_size),
+        example_sampler_(example_sampler),
+        queue_capacity_(queue_capacity) {}
+
+  /// Return batch data from the queue. Called from the ChunkDataset main
+  /// thread.
+  BatchType get_batch() {
+    std::unique_lock<std::mutex> lock(queue_mutex_);
+    cv_read_.wait(lock, [this] {
+      // wait till there is available data in the queue or if all chunks are
+      // loaded (i.e. the dataset is exhausted for this epoch)
+      return (
+          this->total_example_count_in_queue_ >= batch_size_ || this->stop_);
+    });
+    if (batch_queue_.empty()) {
+      AT_ASSERT(stop_);
+      // All batches have been retrieved. Return an empty batch.
+      return nullopt;
+    }
+
+    UnwrappedBatchData batch = std::move(batch_queue_.front());
+    batch_queue_.pop();
+    if (batch.exception) {
+      throw WorkerException(batch.exception);
+    }
+
+    total_example_count_in_queue_ -= batch.batch_data.size();
+    lock.unlock();
+    cv_write_.notify_all();
+
+    return batch.batch_data;
+  }
+
+  /// Push preloaded chunks to batch queue. Called from the ChunkDataset worker
+  /// threads.
+  void add_chunk_data(UnwrappedBatchType data) {
+    std::unique_lock<std::mutex> lock(queue_mutex_);
+    cv_write_.wait(lock, [this] {
+      // stop loading if we have preloaded enough data.
+      return this->total_example_count_in_queue_ < this->queue_capacity_ ||
+          this->stop_;
+    });
+    if (stop_) {
+      // When stop_ is true, it means no further chunk loading is necessary.
+      // Return without any further processing.
+      return;
+    }
+
+    auto data_size = data.size();
+    auto remaining_size = data_size;
+    example_sampler_.reset(data_size);
+
+    auto fill_batch = [&](size_t example_count, UnwrappedBatchType& batch) {
+      auto batch_example_indices = this->example_sampler_.next(example_count);
+      AT_ASSERT(
+          batch_example_indices &&
+          batch_example_indices.value().size() == example_count);
+      BatchRequestType& indices = batch_example_indices.value();
+      for (size_t i : indices) {
+        TORCH_CHECK(i < data_size, "Index out of range");
+        batch.emplace_back(std::move(data[i]));
+      }
+      remaining_size -= example_count;
+    };
+
+    if (!batch_queue_.empty()) {
+      // if the queue has existing data, and the last batch doesn't have enough
+      // examples to fill a batch_size batch, add more example to this batch
+      // first.
+      auto& batch = batch_queue_.back();
+      size_t current_count = batch.batch_data.size();
+      if (current_count < batch_size_) {
+        auto example_count =
+            std::min(remaining_size, batch_size_ - current_count);
+        fill_batch(example_count, batch.batch_data);
+      }
+    }
+
+    // If we still have data remaining after filling the last pushed batch, add
+    // them to the queue too.
+    // NOLINTNEXTLINE(bugprone-infinite-loop)
+    while (remaining_size > 0) {
+      UnwrappedBatchType current_batch;
+
+      // Allocate the batch memory ahead of time.
+      current_batch.reserve(batch_size_);
+
+      auto example_count = std::min(remaining_size, batch_size_);
+      fill_batch(example_count, current_batch);
+      batch_queue_.emplace(std::move(current_batch));
+    }
+    total_example_count_in_queue_ += data_size;
+    lock.unlock();
+    cv_read_.notify_all();
+  }
+
+  /// Push exceptions thrown during preloading into batch queue. Called from
+  /// the ChunkDataset worker threads.
+  void add_chunk_data(std::exception_ptr e_ptr) {
+    std::unique_lock<std::mutex> lock(queue_mutex_);
+    cv_write_.wait(lock, [this] {
+      // stop loading if we have preloaded enough data.
+      return (
+          this->total_example_count_in_queue_ < this->queue_capacity_ ||
+          this->stop_);
+    });
+    if (stop_) {
+      // When stop_ is true, it means this current thread needs to be tore down,
+      // the batch buffer will be discarded, so no need to enqueue any new
+      // exceptions.
+      return;
+    }
+
+    batch_queue_.emplace(e_ptr);
+    lock.unlock();
+    cv_read_.notify_all();
+  }
+
+  void stop() {
+    {
+      // Hold the lock before changing stop_ to prevent a race condition which
+      // can cause a deadlock. To be more specific, conditional variable
+      // cv_write_ waits on predicate stop_ in add_chunk_data(). The wait
+      // happens in two steps: 1) while still holding the lock, check if
+      // predicate is true; 2) if it is true, proceeds, otherwise, release the
+      // lock and wait until notified. Without holding a lock, cv_write_'s
+      // notification can happen in between step 1) and 2). In that case, as
+      // cv_write_ is not in waiting status yet, so the notification is lost and
+      // cv_write_ will sleep forever. By taking a lock before changing
+      // predicate stop_, it is ensured updating and evaluating stop_ always
+      // happen in a synchronized way
+      std::lock_guard<std::mutex> lock(queue_mutex_);
+      stop_ = true;
+    }
+
+    // notify all writers, wake them from wait to exit current method.
+    cv_write_.notify_all();
+    // notify all readers too.
+    cv_read_.notify_all();
+  }
+  /// The batch size is needed to create batches from the chunk data. Similar to
+  /// regular dataloader where the batches are created with prefetches,
+  /// BatchDataBuffer perform the batch creation using the provided batch size.
+  size_t batch_size_ = 0;
+
+  /// count of total example stored in the queue
+  size_t total_example_count_in_queue_ = 0;
+
+  /// struct that contains a raw unwrapped batch unit. An unwrapped batch unit
+  /// is the raw data without 'optional' wrapper. It can be a collection of
+  /// images, utterances, e.t.c.
+  struct UnwrappedBatchData {
+    explicit UnwrappedBatchData(UnwrappedBatchType data)
+        : batch_data(std::move(data)) {}
+
+    // NOLINTNEXTLINE(modernize-pass-by-value)
+    explicit UnwrappedBatchData(std::exception_ptr e) : exception(e) {}
+
+    /// batch data to return
+    UnwrappedBatchType batch_data;
+
+    /// exception pointer which captures any abnormal exceptions while creating
+    /// the batch.
+    std::exception_ptr exception;
+  };
+
+  /// local cache to store example batches from loaded chunk
+  std::queue<UnwrappedBatchData> batch_queue_;
+
+  // sync batch_queue_ update.
+  std::mutex queue_mutex_;
+
+  std::condition_variable cv_read_;
+  std::condition_variable cv_write_;
+
+  ExampleSampler& example_sampler_;
+
+  // configurable maximun number of elements the queue can hold at one time.
+  size_t queue_capacity_;
+
+  // When set to true, it wakes the writer threads from the wait and exit
+  // current function call. This is needed when ChunkDataSet.Reset is called
+  // while the previous epoch is not exhausted yet. When ChunkDataset is waiting
+  // its preloader to finish previous work before tearing down the thread, the
+  // preloader could be still waiting for the conditional variable, thus cause
+  // the program to hang. This boolean is used to break this waiting condition.
+  bool stop_ = false;
+};
+} // namespace detail
+
+/// Options to configure a `ChunkDataset`.
+struct ChunkDatasetOptions {
+  ChunkDatasetOptions() = delete;
+  ChunkDatasetOptions(
+      size_t preloader_count,
+      size_t batch_size,
+      size_t cache_size = 2048,
+      size_t cross_chunk_shuffle_count = 1)
+      : preloader_count_(preloader_count),
+        batch_size_(batch_size),
+        cache_size_(cache_size),
+        cross_chunk_shuffle_count_(cross_chunk_shuffle_count) {
+    TORCH_CHECK(
+        preloader_count_ > 0,
+        "Preloader count is 0. At least one preloader needs to be specified.");
+    TORCH_CHECK(
+        batch_size_ > 0,
+        "Batch size is 0. A positive batch size needs to be specified.");
+    TORCH_CHECK(
+        cache_size_ > 0,
+        "Cache size is 0. A positive cache size needs to be specified.");
+    TORCH_CHECK(
+        cache_size_ >= batch_size_,
+        "Cache size is less than batch size. Cache needs to be large enough to "
+        "hold at least one batch.");
+    TORCH_CHECK(
+        cross_chunk_shuffle_count_ > 0,
+        "cross_chunk_shuffle_count needs to be greater than 0.");
+  }
+
+  /// The number of worker thread to preload chunk data.
+  TORCH_ARG(size_t, preloader_count);
+
+  /// The size of each batch.
+  TORCH_ARG(size_t, batch_size);
+
+  /// The capacity of the queue for batch caching.
+  TORCH_ARG(size_t, cache_size) = 2048;
+
+  // The number of chunks to perfrom cross-chunk shuffling. Default to 1 meaning
+  // no cross-chunk shuffling. When it is equal to n (n > 1), n random
+  // chunks will be loaded at once and example shuffling will be performed
+  // across all those n chunks.
+  // Note: Usually the default config (1 chunk shuffle + example shuffle) is
+  // good enough to generate random distributed data. Use this parameter only if
+  // you know cross-shuffle is needed in your case. Also there is a performance
+  // penalty when this value is greater than 1, as we need to do extra merge
+  // between multiple chunks before performing example sampling.
+  TORCH_ARG(size_t, cross_chunk_shuffle_count) = 1;
+};
+
+/// A stateful dataset that support hierarchical sampling and prefetching of
+/// entre chunks.
+///
+/// Unlike regular dataset, chunk dataset require two samplers to operate and
+/// keeps an internal state. `ChunkSampler` selects, which chunk to load next,
+/// while the `ExampleSampler` determins the order of Examples that are returned
+/// in each `get_batch` call. The hierarchical sampling approach used here is
+/// inspired by this paper http://martin.zinkevich.org/publications/nips2010.pdf
+template <
+    typename ChunkReader,
+    typename ChunkSampler = samplers::RandomSampler,
+    typename ExampleSampler = samplers::RandomSampler>
+class ChunkDataset final
+    : public StatefulDataset<
+          ChunkDataset<ChunkReader, ChunkSampler, ExampleSampler>,
+          typename ChunkReader::BatchType,
+          size_t> {
+ public:
+  using BatchType = torch::optional<typename ChunkReader::BatchType>;
+  using UnwrappedBatchType = typename ChunkReader::BatchType;
+  using BatchRequestType = size_t;
+  using ChunkSamplerType = ChunkSampler;
+  using ExampleSamplerType = ExampleSampler;
+
+  ChunkDataset(
+      ChunkReader chunk_reader,
+      ChunkSampler chunk_sampler,
+      ExampleSampler example_sampler,
+      ChunkDatasetOptions options,
+      std::function<void(UnwrappedBatchType&)> preprocessing_policy =
+          std::function<void(UnwrappedBatchType&)>())
+      : chunk_reader_(std::move(chunk_reader)),
+        chunk_sampler_(std::move(chunk_sampler)),
+        example_sampler_(std::move(example_sampler)),
+        options_(std::move(options)),
+        preprocessing_policy_(std::move(preprocessing_policy)),
+        quit_worker_(false),
+        running_preloaders_(0),
+        load_checkpoint_(false) {}
+
+  ~ChunkDataset() override {
+    // stop batch buffer first.
+    if (batch_buffer_) {
+      batch_buffer_->stop();
+    }
+    free_workers();
+  }
+
+  /// Default get_batch method of BatchDataset. This method returns
+  /// Example batches created from the preloaded chunks. The implemenation
+  /// is dataset agnostic and does not need overriding in different chunk
+  /// datasets.
+  BatchType get_batch(size_t batch_size) override {
+    TORCH_CHECK(
+        batch_buffer_ != nullptr,
+        "Dataset needs to call reset() before calling get_batch().");
+
+    TORCH_CHECK(
+        batch_size == options_.batch_size(),
+        "The requested batch size does not match with the initialized batch size.\n"
+        " The requested batch size is ",
+        batch_size,
+        ", while the dataset is created with batch size equal to ",
+        options_.batch_size());
+    return batch_buffer_->get_batch();
+  }
+
+  /// Helper method around get_batch as `batch_size` is not strictly necessary
+  BatchType get_batch() {
+    return get_batch(options_.batch_size());
+  }
+
+  /// This will clear any internal state and starts the internal prefetching
+  /// mechanism for the chunk dataset.
+  void reset() override {
+    // We need this to support partial data reads via dataloader iterator.
+    if (batch_buffer_) {
+      batch_buffer_->stop();
+    }
+    // free workers from previous reset if there is any.
+    free_workers();
+    preload_threads_.clear();
+
+    if (!load_checkpoint_) {
+      chunk_reader_.reset();
+      chunk_sampler_.reset(chunk_reader_.chunk_count());
+      load_checkpoint_ = false;
+    }
+
+    // Throw out any existing cached batch in the buffer and re-creates a new
+    // chunk buffer.
+    batch_buffer_ = std::make_unique<
+        detail::BatchDataBuffer<UnwrappedBatchType, ExampleSamplerType>>(
+        options_.batch_size(), example_sampler_, options_.cache_size());
+
+    // create new workers for this new epoch.
+    quit_worker_ = false;
+
+    AT_ASSERT(running_preloaders_ == 0);
+    running_preloaders_ = options_.preloader_count();
+    for (const auto i : c10::irange(options_.preloader_count())) {
+      preload_threads_.emplace_back([this, i]() { this->preloader(i); });
+    }
+  }
+
+  /// size is not used for chunk dataset.
+  optional<size_t> size() const override {
+    return torch::nullopt;
+  }
+
+  // provide a references to chunk sampler. Used mainly in distributed data
+  // loading to set the epoch number for the sampler.
+  ChunkSamplerType& chunk_sampler() {
+    return chunk_sampler_;
+  }
+
+  void save(serialize::OutputArchive& archive) const override {
+    std::lock_guard<std::mutex> lock(chunk_index_guard_);
+    chunk_sampler_.save(archive);
+  }
+
+  void load(serialize::InputArchive& archive) override {
+    std::lock_guard<std::mutex> lock(chunk_index_guard_);
+    chunk_sampler_.load(archive);
+    load_checkpoint_ = true;
+  }
+
+ private:
+  /// running on worker thread to preload chunk data.
+  void preloader(size_t id) {
+    while (!quit_worker_.load()) {
+      try {
+        std::vector<size_t> chunk_idx;
+        {
+          std::lock_guard<std::mutex> lock(chunk_index_guard_);
+          if (auto chunk_sampler_result = chunk_sampler_.next(
+                  this->options_.cross_chunk_shuffle_count())) {
+            chunk_idx = chunk_sampler_result.value();
+          } else {
+            break;
+          }
+        }
+        UnwrappedBatchType data = chunk_reader_.read_chunk(chunk_idx[0]);
+        for (const auto i : c10::irange(1, chunk_idx.size())) {
+          auto chunk_data = chunk_reader_.read_chunk(chunk_idx[i]);
+          std::move(
+              chunk_data.begin(), chunk_data.end(), std::back_inserter(data));
+        }
+        if (preprocessing_policy_) {
+          preprocessing_policy_(data);
+        }
+        if (!data.empty()) { // skip empty chunks.
+          batch_buffer_->add_chunk_data(std::move(data));
+        }
+      } catch (...) {
+        batch_buffer_->add_chunk_data(std::current_exception());
+      }
+    }
+    AT_ASSERT(running_preloaders_.load() > 0);
+    --running_preloaders_;
+    if (running_preloaders_.load() == 0) {
+      // all preloaders are completed, so we can notify the batch_buffer.
+      batch_buffer_->stop();
+    }
+  }
+
+  /// Block the current thread until the workers finish execution and exit.
+  void free_workers() {
+    if (!quit_worker_.load()) {
+      quit_worker_ = true;
+      for (auto& worker_thread : preload_threads_) {
+        worker_thread.join();
+      }
+    }
+  }
+
+ private:
+  // Templated class that defines what is a chunk and how to read chunk data.
+  // When a chunk is returned by chunk_reader_, ChunkDataset split it into
+  // batches and caches them in batch_buffer_.
+  ChunkReader chunk_reader_;
+
+  // chunk sampler to shuffle different chunks
+  ChunkSamplerType chunk_sampler_;
+
+  // example sampler to shuffle examples in a specific chunk
+  ExampleSamplerType example_sampler_;
+
+  // batch data buffer which holds chunk data from preloading thread.
+  std::shared_ptr<
+      detail::BatchDataBuffer<UnwrappedBatchType, ExampleSamplerType>>
+      batch_buffer_;
+
+  // worker thread pool
+  std::vector<std::thread> preload_threads_;
+
+  /// The options the Dataset was configured with.
+  const ChunkDatasetOptions options_;
+
+  // function pointer wrapper to apply custom processing over chunk data. This
+  // is considered an advanced parameter for developers who want to apply a
+  // pre-process to the chunk data before sampling into minibatch.
+  // Different than the collate function, this policy is applied on the chunk
+  // level, instead of minibatch level. When a chunk of data is loaded (multiple
+  // chunks if cross_chunk_shuffle_count_ is greater than 1), this policy is
+  // applied to the full loaded data. It is useful if developers want to
+  // perform pre-processing (like bucketing) to the chunk data before
+  // example sampler samples the data. By default it's an empty pointer and no
+  // action will be taken.
+  std::function<void(UnwrappedBatchType&)> preprocessing_policy_;
+
+  // indicate whether the worker thread can be teared down
+  std::atomic<bool> quit_worker_;
+
+  // keep track of running preloaders to notify batch buffer. A value 0
+  // indicates that the chunk loading is completed.
+  std::atomic<size_t> running_preloaders_;
+
+  // mutex to synchronize chunk sampler next() call.
+  mutable std::mutex chunk_index_guard_;
+
+  // boolean value to indicate whether we need to load the checkpoint for
+  // chunk_sampler_.
+  bool load_checkpoint_;
+};
+} // namespace datasets
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/datasets/tensor.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <torch/data/datasets/base.h>
+#include <torch/data/example.h>
+#include <torch/types.h>
+
+#include <cstddef>
+#include <vector>
+
+namespace torch {
+namespace data {
+namespace datasets {
+
+/// A dataset of tensors.
+/// Stores a single tensor internally, which is then indexed inside `get()`.
+struct TensorDataset : public Dataset<TensorDataset, TensorExample> {
+  /// Creates a `TensorDataset` from a vector of tensors.
+  explicit TensorDataset(const std::vector<Tensor>& tensors)
+      : TensorDataset(torch::stack(tensors)) {}
+
+  explicit TensorDataset(torch::Tensor tensor) : tensor(std::move(tensor)) {}
+
+  /// Returns a single `TensorExample`.
+  TensorExample get(size_t index) override {
+    return tensor[index];
+  }
+
+  /// Returns the number of tensors in the dataset.
+  optional<size_t> size() const override {
+    return tensor.size(0);
+  }
+
+  Tensor tensor;
+};
+
+} // namespace datasets
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/detail/data_shuttle.h

@@ -0,0 +1,87 @@
+#pragma once
+
+#include <torch/data/detail/queue.h>
+#include <torch/types.h>
+
+#include <c10/util/Exception.h>
+#include <c10/util/Optional.h>
+
+#include <chrono>
+#include <utility>
+
+namespace torch {
+namespace data {
+namespace detail {
+
+/// Encapsulates the full life cycle of DataLoader jobs.
+///
+/// When a new job is enqueued to the `DataShuttle`, a counter for in-flight
+/// jobs is bumped. This job is said to be "in-flight" until its result is
+/// popped. Worker threads dequeue jobs as soon as they are available. When a
+/// worker finishes a job, it enqueues the result. Only when the main thread
+/// dequeues a result is the count of in-flight jobs decremented. When the main
+/// thread attempts to dequeue a job but no jobs are in-flight, that means the
+/// epoch is complete and `pop_result` returns an empty optional.
+template <typename Job, typename Result>
+class DataShuttle {
+ public:
+  /// Pushes a new job. Called by the main thread.
+  void push_job(Job job) {
+    new_jobs_.push(std::move(job));
+    ++in_flight_jobs_;
+  }
+
+  /// Pushes the result of a job. Called by worker threads.
+  void push_result(Result result) {
+    results_.push(std::move(result));
+  }
+
+  /// Returns the next job, blocking until there is one available. Called by
+  /// worker threads.
+  Job pop_job() {
+    return new_jobs_.pop();
+  }
+
+  /// Returns the result of a job, or nullopt if all jobs were exhausted. Called
+  /// by the main thread.
+  optional<Result> pop_result(
+      optional<std::chrono::milliseconds> timeout = nullopt) {
+    if (in_flight_jobs_ > 0) {
+      auto result = results_.pop(timeout);
+      --in_flight_jobs_;
+      return result;
+    }
+    return nullopt;
+  }
+
+  /// Discards any jobs that are not yet in flight, and waits for all in-flight
+  /// jobs to finish, discarding their result.
+  void drain() {
+    // Clear all inputs so that no further jobs are scheduled.
+    auto number_cleared = new_jobs_.clear();
+    in_flight_jobs_ -= number_cleared;
+    // Remove any outstanding results.
+    while (in_flight_jobs_ > 0) {
+      pop_result();
+    }
+  }
+
+  /// Returns the number of jobs that are still in progress.
+  /// When this number is zero, an epoch is finished.
+  size_t in_flight_jobs() const noexcept {
+    return in_flight_jobs_;
+  }
+
+ private:
+  /// The queue for jobs that are not yet in flight.
+  Queue<Job> new_jobs_;
+  /// The number of in-flight jobs.
+  /// NOTE: Not atomic because only manipulated by the main thread.
+  size_t in_flight_jobs_ = 0;
+  /// The queue for results of finished jobs.
+  Queue<Result> results_;
+};
+
+} // namespace detail
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/detail/queue.h

@@ -0,0 +1,84 @@
+#pragma once
+
+#include <torch/types.h>
+
+#include <c10/util/Exception.h>
+
+#include <chrono>
+#include <condition_variable>
+#include <cstddef>
+#include <mutex>
+#include <queue>
+
+namespace torch {
+namespace data {
+namespace detail {
+
+/// A basic locked, blocking MPMC queue.
+///
+/// Every `push` and `pop` is guarded by a mutex. A condition variable is used
+/// to communicate insertion of new elements, such that waiting threads will be
+/// woken up if they are currently waiting inside a call to `pop()`.
+///
+/// Note that this data structure is written specifically for use with the
+/// `DataLoader`. Its behavior is tailored to this use case and may not be
+/// applicable to more general uses.
+template <typename T>
+class Queue {
+ public:
+  /// Pushes a new value to the back of the `Queue` and notifies one thread on
+  /// the waiting side about this event.
+  void push(T value) {
+    {
+      std::lock_guard<std::mutex> lock(mutex_);
+      queue_.push(std::move(value));
+    }
+    cv_.notify_one();
+  }
+
+  /// Blocks until at least one element is ready to be popped from the front of
+  /// the queue. An optional `timeout` in seconds can be used to limit the time
+  /// spent waiting for an element. If the wait times out, an exception is
+  /// raised.
+  T pop(optional<std::chrono::milliseconds> timeout = nullopt) {
+    std::unique_lock<std::mutex> lock(mutex_);
+    if (timeout) {
+      if (!cv_.wait_for(
+              lock, *timeout, [this] { return !this->queue_.empty(); })) {
+        // clang-format off
+        AT_ERROR(
+            "Timeout in DataLoader queue while waiting for next batch"
+            " (timeout was ", timeout->count(), " ms)");
+        // clang-format on
+      }
+    } else {
+      cv_.wait(lock, [this] { return !this->queue_.empty(); });
+    }
+    AT_ASSERT(!queue_.empty());
+    T value = queue_.front();
+    queue_.pop();
+    lock.unlock();
+    return value;
+  }
+
+  /// Empties the queue and returns the number of elements that were present at
+  /// the start of the function. No threads are notified about this event as it
+  /// is assumed to be used to drain the queue during shutdown of a
+  /// `DataLoader`.
+  size_t clear() {
+    std::lock_guard<std::mutex> lock(this->mutex_);
+    const auto size = queue_.size();
+    while (!queue_.empty()) {
+      queue_.pop();
+    }
+    return size;
+  }
+
+ private:
+  std::queue<T> queue_;
+  std::mutex mutex_;
+  std::condition_variable cv_;
+};
+} // namespace detail
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/detail/sequencers.h

@@ -0,0 +1,113 @@
+#pragma once
+
+#include <torch/types.h>
+
+#include <algorithm>
+#include <cstddef>
+#include <vector>
+
+namespace torch {
+namespace data {
+namespace detail {
+namespace sequencers {
+namespace detail {
+template <typename Result>
+bool buffer_contains_result(const std::vector<optional<Result>>& buffer) {
+  return std::any_of(
+      buffer.begin(), buffer.end(), [](const optional<Result>& result) {
+        return result.has_value();
+      });
+}
+} // namespace detail
+
+/// A `Sequencer` accepts a function that yields the next result of a
+/// `DataLoader` and then has the opportunity to influence the order in which
+/// these results are returned. The `NoSequencer` does not enforce any
+/// sequencing and returns any result directly. The `OrderedSequencer` instead
+/// buffers results internally to return them in order of their sequence number.
+template <typename Result>
+struct Sequencer {
+  using ResultProducer = std::function<optional<Result>()>;
+  virtual ~Sequencer() = default;
+  virtual optional<Result> next(ResultProducer next_result) = 0;
+};
+
+/// A `Sequencer` that does not enforce any ordering. It is effectively the
+/// identity function.
+template <typename Result>
+struct NoSequencer final : public Sequencer<Result> {
+  using typename Sequencer<Result>::ResultProducer;
+  optional<Result> next(ResultProducer next_result) override {
+    return next_result();
+  }
+};
+
+/// A `Sequencer` that buffers results and returns them in order of their
+/// sequence number. The `OrderedSequencer` maintains an internal, monotonically
+/// incrementing counter for the next sequence number it expects. If it receives
+/// a result with a higher sequence number, it will buffer it for later (when
+/// the sequence number reaches that of this result). Otherwise, if the sequence
+/// numbers match, the result is returned.
+///
+/// Implementation note: The `OrderedSequencer` is implemented with a fixed-size
+/// buffer. Let `m` be the maximum number of jobs in the data loader's queue and
+/// `s` be the current sequence number. Assume `m` jobs are scheduled in the
+/// `DataLoader`. Any new result is stored at index `job.sqn mod m` in the
+/// `OrderedSequencer`. Why are we sure sequence numbers of new jobs will not
+/// collide with sequence numbers of buffered jobs? The `OrderedSequencer` will
+/// not return from `next()` until it receives the result with sqn `s`. This
+/// means no new jobs can be scheduled in the `DataLoader` in the meantime,
+/// which enforces that as long as sqn `s` has not been received, `s + m` (which
+/// would cause a collision in the fixed-size buffer) will not yet be scheduled.
+template <typename Result>
+struct OrderedSequencer : public Sequencer<Result> {
+  using typename Sequencer<Result>::ResultProducer;
+
+  /// Constructs the `OrderedSequencer` with the maximum number of results it
+  /// will ever hold at one point in time.
+  explicit OrderedSequencer(size_t max_jobs) : buffer_(max_jobs) {}
+
+  /// Buffers results until the next one in the expected order is received.
+  optional<Result> next(ResultProducer next_result) override {
+    // If we already have the result for the next sqn, return it.
+    if (auto& maybe_result = buffer(next_sequence_number_)) {
+      auto result = std::move(*maybe_result);
+      buffer(next_sequence_number_++).reset();
+      return result;
+    }
+    // Otherwise wait for the next result.
+    while (true) {
+      auto result = next_result();
+      if (!result) {
+        AT_ASSERT(!detail::buffer_contains_result(buffer_));
+        break;
+      }
+      // If it was not nullopt and the sequence numbers match, return it
+      // directly and bump the sequence number.
+      if (result->sequence_number == next_sequence_number_) {
+        ++next_sequence_number_;
+        return result;
+      }
+      // Stash the result for later.
+      AT_ASSERT(!buffer(result->sequence_number).has_value());
+      buffer(result->sequence_number) = std::move(result);
+    }
+    // The result was an empty optional, so we are done with this epoch.
+    return nullopt;
+  }
+
+  /// Accesses the buffer at the `index` modulo the buffer size.
+  optional<Result>& buffer(size_t index) {
+    return buffer_.at(index % buffer_.size());
+  }
+
+  /// The monotonically increasing sequence number we expect.
+  size_t next_sequence_number_ = 0;
+
+  /// A fixed-size buffer (after construction).
+  std::vector<optional<Result>> buffer_;
+};
+} // namespace sequencers
+} // namespace detail
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/example.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include <torch/types.h>
+
+namespace torch {
+namespace data {
+
+/// An `Example` from a dataset.
+///
+/// A dataset consists of data and an associated target (label).
+template <typename Data = at::Tensor, typename Target = at::Tensor>
+struct Example {
+  using DataType = Data;
+  using TargetType = Target;
+
+  Example() = default;
+  Example(Data data, Target target)
+      : data(std::move(data)), target(std::move(target)) {}
+
+  Data data;
+  Target target;
+};
+
+namespace example {
+using NoTarget = void;
+} // namespace example
+
+/// A specialization for `Example` that does not have a target.
+///
+/// This class exists so that code can be written for a templated `Example`
+/// type, and work both for labeled and unlabeled datasets.
+template <typename Data>
+struct Example<Data, example::NoTarget> {
+  using DataType = Data;
+  using TargetType = example::NoTarget;
+
+  Example() = default;
+  /* implicit */ Example(Data data) : data(std::move(data)) {}
+
+  // When a DataLoader returns an Example like this, that example should be
+  // implicitly convertible to the underlying data type.
+
+  operator Data&() {
+    return data;
+  }
+  operator const Data&() const {
+    return data;
+  }
+
+  Data data;
+};
+
+using TensorExample = Example<at::Tensor, example::NoTarget>;
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/iterator.h

@@ -0,0 +1,178 @@
+#pragma once
+
+#include <torch/csrc/utils/variadic.h>
+#include <torch/types.h>
+
+#include <c10/util/Exception.h>
+
+#include <functional>
+#include <iterator>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+namespace torch {
+namespace data {
+namespace detail {
+// For increased safety and more separated logic, this implementation of
+// `Iterator` consists of a `ValidIterator` and a `SentinelIterator`. A
+// `ValidIterator` yields new batches until the `DataLoader` is exhausted. While
+// the `DataLoader` is not exhausted, `ValidIterator`s compare equal if they are
+// the same object. When the `ValidIterator` becomes exhausted, it compares
+// equal to the `SentinelIterator`, but not before. Half the code here is to
+// implement double dispatch for the comparison. Got damnit, C++.
+
+template <typename Batch>
+struct ValidIterator;
+
+template <typename Batch>
+struct SentinelIterator;
+
+/// Base class for the `ValidIterator` and `SentinelIterator`
+template <typename Batch>
+struct IteratorImpl {
+  virtual ~IteratorImpl() = default;
+  virtual void next() = 0;
+  virtual Batch& get() = 0;
+  virtual bool operator==(const IteratorImpl& other) const = 0;
+  virtual bool operator==(const ValidIterator<Batch>& other) const = 0;
+  virtual bool operator==(const SentinelIterator<Batch>& other) const = 0;
+};
+
+template <typename Batch>
+struct ValidIterator : public IteratorImpl<Batch> {
+  using BatchProducer = std::function<optional<Batch>()>;
+
+  explicit ValidIterator(BatchProducer next_batch)
+      : next_batch_(std::move(next_batch)) {}
+
+  /// Fetches the next batch.
+  void next() override {
+    // If we didn't get the very first batch yet, get it now.
+    lazy_initialize();
+    TORCH_CHECK(
+        batch_.has_value(), "Attempted to increment iterator past the end");
+    // Increment to the next batch.
+    batch_ = next_batch_();
+  }
+
+  /// Returns the current batch. The precondition for this operation to not
+  /// throw an exception is that it has been compared to the `SentinelIterator`
+  /// and did not compare equal.
+  Batch& get() override {
+    // If we didn't get the very first batch yet, get it now.
+    lazy_initialize();
+    TORCH_CHECK(
+        batch_.has_value(),
+        "Attempted to dereference iterator that was past the end");
+    return batch_.value();
+  }
+
+  /// Does double dispatch.
+  bool operator==(const IteratorImpl<Batch>& other) const override {
+    return other == *this;
+  }
+
+  /// A `ValidIterator` is equal to the `SentinelIterator` iff. the
+  /// `ValidIterator` has reached the end of the dataloader.
+  bool operator==(const SentinelIterator<Batch>& /* unused */) const override {
+    lazy_initialize();
+    return !batch_;
+  }
+
+  /// Returns true if the memory address of `other` equals that of `this`.
+  bool operator==(const ValidIterator<Batch>& other) const override {
+    return &other == this;
+  }
+
+  /// Gets the very first batch if it has not yet been fetched.
+  void lazy_initialize() const {
+    if (!initialized_) {
+      batch_ = next_batch_();
+      initialized_ = true;
+    }
+  }
+
+  BatchProducer next_batch_;
+  mutable optional<Batch> batch_;
+  mutable bool initialized_ = false;
+};
+
+template <typename Batch>
+struct SentinelIterator : public IteratorImpl<Batch> {
+  void next() override {
+    AT_ERROR(
+        "Incrementing the DataLoader's past-the-end iterator is not allowed");
+  }
+
+  Batch& get() override {
+    AT_ERROR(
+        "Dereferencing the DataLoader's past-the-end iterator is not allowed");
+  }
+
+  /// Does double dispatch.
+  bool operator==(const IteratorImpl<Batch>& other) const override {
+    return other == *this;
+  }
+
+  /// Calls the comparison operator between `ValidIterator` and
+  /// `SentinelIterator`.
+  bool operator==(const ValidIterator<Batch>& other) const override {
+    return other == *this;
+  }
+
+  /// Sentinel iterators always compare equal.
+  bool operator==(const SentinelIterator<Batch>& other) const override {
+    return true;
+  }
+};
+} // namespace detail
+
+template <typename Batch>
+class Iterator {
+ public:
+  // Type aliases to make the class recognized as a proper iterator.
+  using difference_type = std::ptrdiff_t;
+  using value_type = Batch;
+  using pointer = Batch*;
+  using reference = Batch&;
+  using iterator_category = std::input_iterator_tag;
+
+  explicit Iterator(std::unique_ptr<detail::IteratorImpl<Batch>> impl)
+      : impl_(std::move(impl)) {}
+
+  /// Increments the iterator.
+  /// Only permitted for valid iterators (not past the end).
+  Iterator& operator++() {
+    impl_->next();
+    return *this;
+  }
+
+  /// Returns the current batch.
+  /// Only permitted for valid iterators (not past the end).
+  Batch& operator*() {
+    return impl_->get();
+  }
+
+  /// Returns a pointer to the current batch.
+  /// Only permitted for valid iterators (not past the end).
+  Batch* operator->() {
+    return &impl_->get();
+  }
+
+  /// Compares two iterators for equality.
+  bool operator==(const Iterator& other) const {
+    return *impl_ == *other.impl_;
+  }
+
+  /// Compares two iterators for inequality.
+  bool operator!=(const Iterator& other) const {
+    return !(*this == other);
+  }
+
+ private:
+  /// Points either to a `ValidIterator` or to a `SentinelIterator`.
+  std::shared_ptr<detail::IteratorImpl<Batch>> impl_;
+};
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/samplers.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <torch/data/samplers/base.h>
+#include <torch/data/samplers/custom_batch_request.h>
+#include <torch/data/samplers/distributed.h>
+#include <torch/data/samplers/random.h>
+#include <torch/data/samplers/sequential.h>
+#include <torch/data/samplers/serialize.h>
+#include <torch/data/samplers/stream.h>

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/transforms.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <torch/data/transforms/base.h>
+#include <torch/data/transforms/collate.h>
+#include <torch/data/transforms/lambda.h>
+#include <torch/data/transforms/stack.h>
+#include <torch/data/transforms/tensor.h>

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/transforms/base.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include <torch/types.h>
+
+#include <utility>
+#include <vector>
+
+namespace torch {
+namespace data {
+namespace transforms {
+
+/// A transformation of a batch to a new batch.
+template <typename InputBatch, typename OutputBatch>
+class BatchTransform {
+ public:
+  using InputBatchType = InputBatch;
+  using OutputBatchType = OutputBatch;
+
+  virtual ~BatchTransform() = default;
+
+  /// Applies the transformation to the given `input_batch`.
+  virtual OutputBatch apply_batch(InputBatch input_batch) = 0;
+};
+
+/// A transformation of individual input examples to individual output examples.
+///
+/// Just like a `Dataset` is a `BatchDataset`, a `Transform` is a
+/// `BatchTransform` that can operate on the level of individual examples rather
+/// than entire batches. The batch-level transform is implemented (by default)
+/// in terms of the example-level transform, though this can be customized.
+template <typename Input, typename Output>
+class Transform
+    : public BatchTransform<std::vector<Input>, std::vector<Output>> {
+ public:
+  using InputType = Input;
+  using OutputType = Output;
+
+  /// Applies the transformation to the given `input`.
+  virtual OutputType apply(InputType input) = 0;
+
+  /// Applies the `transformation` over the entire `input_batch`.
+  std::vector<Output> apply_batch(std::vector<Input> input_batch) override {
+    std::vector<Output> output_batch;
+    output_batch.reserve(input_batch.size());
+    for (auto&& input : input_batch) {
+      output_batch.push_back(apply(std::move(input)));
+    }
+    return output_batch;
+  }
+};
+} // namespace transforms
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/transforms/collate.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <torch/data/example.h>
+#include <torch/data/transforms/lambda.h>
+
+#include <vector>
+
+namespace torch {
+namespace data {
+namespace transforms {
+
+/// A `Collation` is a transform that reduces a batch into a single value.
+/// The result is a `BatchDataset` that has the type of the single value as its
+/// `BatchType`.
+template <typename T, typename BatchType = std::vector<T>>
+using Collation = BatchTransform<BatchType, T>;
+
+/// A `Collate` allows passing a custom function to reduce/collate a batch
+/// into a single value. It's effectively the lambda version of `Collation`,
+/// which you could subclass and override `operator()` to achieve the same.
+///
+/// \rst
+/// .. code-block:: cpp
+///   using namespace torch::data;
+///
+///   auto dataset = datasets::MNIST("path/to/mnist")
+///     .map(transforms::Collate<Example<>>([](std::vector<Example<>> e) {
+///       return std::move(e.front());
+///     }));
+/// \endrst
+template <typename T, typename BatchType = std::vector<T>>
+using Collate = BatchLambda<BatchType, T>;
+} // namespace transforms
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/transforms/lambda.h

@@ -0,0 +1,56 @@
+#pragma once
+
+#include <torch/data/transforms/base.h>
+
+#include <functional>
+#include <utility>
+#include <vector>
+
+namespace torch {
+namespace data {
+namespace transforms {
+
+/// A `BatchTransform` that applies a user-provided functor to a batch.
+template <typename Input, typename Output = Input>
+class BatchLambda : public BatchTransform<Input, Output> {
+ public:
+  using typename BatchTransform<Input, Output>::InputBatchType;
+  using typename BatchTransform<Input, Output>::OutputBatchType;
+  using FunctionType = std::function<OutputBatchType(InputBatchType)>;
+
+  /// Constructs the `BatchLambda` from the given `function` object.
+  explicit BatchLambda(FunctionType function)
+      : function_(std::move(function)) {}
+
+  /// Applies the user-provided function object to the `input_batch`.
+  OutputBatchType apply_batch(InputBatchType input_batch) override {
+    return function_(std::move(input_batch));
+  }
+
+ private:
+  FunctionType function_;
+};
+
+// A `Transform` that applies a user-provided functor to individual examples.
+template <typename Input, typename Output = Input>
+class Lambda : public Transform<Input, Output> {
+ public:
+  using typename Transform<Input, Output>::InputType;
+  using typename Transform<Input, Output>::OutputType;
+  using FunctionType = std::function<Output(Input)>;
+
+  /// Constructs the `Lambda` from the given `function` object.
+  explicit Lambda(FunctionType function) : function_(std::move(function)) {}
+
+  /// Applies the user-provided function object to the `input`.
+  OutputType apply(InputType input) override {
+    return function_(std::move(input));
+  }
+
+ private:
+  FunctionType function_;
+};
+
+} // namespace transforms
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/transforms/tensor.h

@@ -0,0 +1,77 @@
+#pragma once
+
+#include <torch/data/example.h>
+#include <torch/data/transforms/base.h>
+#include <torch/types.h>
+
+#include <functional>
+#include <utility>
+
+namespace torch {
+namespace data {
+namespace transforms {
+
+/// A `Transform` that is specialized for the typical `Example<Tensor, Tensor>`
+/// combination. It exposes a single `operator()` interface hook (for
+/// subclasses), and calls this function on input `Example` objects.
+template <typename Target = Tensor>
+class TensorTransform
+    : public Transform<Example<Tensor, Target>, Example<Tensor, Target>> {
+ public:
+  using E = Example<Tensor, Target>;
+  using typename Transform<E, E>::InputType;
+  using typename Transform<E, E>::OutputType;
+
+  /// Transforms a single input tensor to an output tensor.
+  virtual Tensor operator()(Tensor input) = 0;
+
+  /// Implementation of `Transform::apply` that calls `operator()`.
+  OutputType apply(InputType input) override {
+    input.data = (*this)(std::move(input.data));
+    return input;
+  }
+};
+
+/// A `Lambda` specialized for the typical `Example<Tensor, Tensor>` input type.
+template <typename Target = Tensor>
+class TensorLambda : public TensorTransform<Target> {
+ public:
+  using FunctionType = std::function<Tensor(Tensor)>;
+
+  /// Creates a `TensorLambda` from the given `function`.
+  explicit TensorLambda(FunctionType function)
+      : function_(std::move(function)) {}
+
+  /// Applies the user-provided functor to the input tensor.
+  Tensor operator()(Tensor input) override {
+    return function_(std::move(input));
+  }
+
+ private:
+  FunctionType function_;
+};
+
+/// Normalizes input tensors by subtracting the supplied mean and dividing by
+/// the given standard deviation.
+template <typename Target = Tensor>
+struct Normalize : public TensorTransform<Target> {
+  /// Constructs a `Normalize` transform. The mean and standard deviation can be
+  /// anything that is broadcastable over the input tensors (like single
+  /// scalars).
+  Normalize(ArrayRef<double> mean, ArrayRef<double> stddev)
+      : mean(torch::tensor(mean, torch::kFloat32)
+                 .unsqueeze(/*dim=*/1)
+                 .unsqueeze(/*dim=*/2)),
+        stddev(torch::tensor(stddev, torch::kFloat32)
+                   .unsqueeze(/*dim=*/1)
+                   .unsqueeze(/*dim=*/2)) {}
+
+  torch::Tensor operator()(Tensor input) override {
+    return input.sub(mean).div(stddev);
+  }
+
+  torch::Tensor mean, stddev;
+};
+} // namespace transforms
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/data/worker_exception.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <exception>
+#include <string>
+#include <utility>
+
+namespace torch {
+namespace data {
+
+/// An exception thrown when a DataLoader's worker thread throws an exception,
+/// which is caught. A `WorkerException` stores an `exception_ptr` to the
+/// original exception thrown in the worker thread.
+struct WorkerException : public std::exception {
+  /// Constructs a `WorkerException` from an `exception_ptr`.
+  explicit WorkerException(std::exception_ptr original)
+      : original_exception(std::move(original)),
+        message("Caught exception in DataLoader worker thread.") {
+    try {
+      std::rethrow_exception(original_exception);
+    } catch (std::exception& e) {
+      message += " Original message: ";
+      message += e.what();
+    }
+  }
+
+  const char* what() const noexcept override {
+    return message.c_str();
+  }
+
+  /// The original exception thrown in the worker thread.
+  std::exception_ptr original_exception;
+
+  /// This exception's message (not the original exception's message).
+  std::string message;
+};
+
+} // namespace data
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/detail/TensorDataContainer.h

@@ -0,0 +1,372 @@
+#pragma once
+
+#include <ATen/Dispatch.h>
+#include <ATen/ScalarOps.h>
+#include <ATen/core/Tensor.h>
+#include <ATen/core/grad_mode.h>
+
+#include <c10/util/irange.h>
+
+#ifndef AT_PER_OPERATOR_HEADERS
+#include <ATen/Functions.h>
+#else
+#include <ATen/ops/empty.h>
+#include <ATen/ops/tensor.h>
+#endif
+
+#include <initializer_list>
+
+namespace torch {
+
+namespace detail {
+
+enum class TensorDataContainerType { Scalar, InitList, Tensor };
+
+struct TensorDataContainer;
+
+inline std::ostream& operator<<(
+    std::ostream& stream,
+    const TensorDataContainer& tensor_data_container);
+
+// FIXME: There is no `operator<<` overload for `at::kBFloat16` type,
+// and we need to convert it to `float` type using `operator float()` function
+// defined in `c10/util/BFloat16.h`.
+// Tracking issue: https://github.com/pytorch/pytorch/issues/28845
+inline std::ostream& operator<<(std::ostream& stream, c10::BFloat16 value) {
+  stream << static_cast<float>(value);
+  return stream;
+}
+
+inline c10::ScalarType compute_desired_dtype(c10::ScalarType scalar_type) {
+  if (scalar_type == at::kInt || scalar_type == at::kLong) {
+    // C++ `torch::tensor` with an integer type or an `at::ArrayRef` /
+    // `std::vector` / (nested) braced-init-list of integer types always
+    // produces a tensor of dtype `at::kLong` (aka. int64_t), matching Python
+    // `torch.tensor` behavior.
+    return at::kLong;
+  } else if (scalar_type == at::kFloat || scalar_type == at::kDouble) {
+    // C++ `torch::tensor` with a floating-point type or an `at::ArrayRef` /
+    // `std::vector` / (nested) braced-init-list of floating-point types always
+    // produces a tensor of dtype `torch::get_default_dtype()`, matching Python
+    // `torch.tensor` behavior.
+    return at::typeMetaToScalarType(at::get_default_dtype());
+  } else {
+    return scalar_type;
+  }
+}
+
+// We use `TensorDataContainer` to support converting the following data
+// container types into the equivalent Tensor:
+//
+// 1. Arbitrarily nested braced-init-list (e.g. `{{1, 2}, {3, 4}}`).
+// 2. `at::ArrayRef` of supported tensor data types.
+// 3. `std::vector` of supported tensor data types.
+//
+// At any time, a `TensorDataContainer` object represents one of the following:
+//
+// 1. A scalar with value `scalar()` and type `scalar_type()`.
+// 2. A Tensor represented in `std::initializer_list<TensorDataContainer>` form,
+//    with value `init_list()`, Tensor scalar type `scalar_type()`, and Tensor
+//    sizes `sizes()`.
+// 3. A Tensor represented in `at::Tensor` form, with value `tensor()`, scalar
+// type `scalar_type()`,
+//    and Tensor sizes `sizes()`.
+//
+// All the infrastructure here is mostly to support converting an arbitrarily
+// nested braced-init-list to the equivalent Tensor successfully. Consider the
+// following example:
+//
+// `torch::tensor({{1}, {2}})`
+//
+// this will call into the `torch::tensor` function:
+//
+// `at::Tensor tensor(detail::TensorDataContainer tensor_data_container, const
+// at::TensorOptions& options = {})`
+//
+// the compiler will first try to convert `{{1}, {2}}` to `TensorDataContainer`
+// type:
+//
+// `TensorDataContainer({{1}, {2}})`
+//
+// which matches to the
+// `TensorDataContainer(std::initializer_list<TensorDataContainer>)`
+// constructor, and in an attempt to convert `{1}` and `{2}` to
+// `TensorDataContainer`, it calls the following:
+//
+// `TensorDataContainer({1})`  (same call path happens for `{2}`, and we'll just
+// focus on `{1}` here)
+//
+// At this point, theoretically there are two plausible ways for `{1}` to be
+// matched to one of the constructors of `TensorDataContainer`:
+//
+// 1. It can be a list-initialization of a scalar value, thus matching
+// `TensorDataContainer(int value)`.
+// 2. It can be converted to `std::initializer_list<TensorDataContainer>`, thus
+// matching
+//    `TensorDataContainer(std::initializer_list<TensorDataContainer>)`.
+//
+// How does the compiler decide which one to choose? According to
+// `https://en.cppreference.com/w/cpp/language/list_initialization`,
+// braced-init-list always prefers the constructor that takes
+// `std::initializer_list`. Hence we happily move forward with constructor #2,
+// and it calls the following:
+//
+// `TensorDataContainer(1)`
+//
+// Now it matches `TensorDataContainer(int value)`, which stores `1` as a scalar
+// value. All is good.
+struct TensorDataContainer {
+  // NOTE: For tensors with zero-size dimensions (e.g. `torch::tensor({{},
+  // {}})`), the innermost empty braced-init-list `{}` matches the default
+  // constructor of the innermost `TensorDataContainer`.
+  // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
+  TensorDataContainer()
+      : sizes_({0}),
+        // NOTE: In Python, the dtype of tensors with zero-size dimensions (e.g.
+        // `torch.tensor([[], []])`) depends on the value of
+        // `torch.get_default_dtype()`, and we should do the same for the C++
+        // equivalent.
+        scalar_type_(at::typeMetaToScalarType(at::get_default_dtype())),
+        type_(TensorDataContainerType::InitList) {}
+#define TENSOR(T, S)                            \
+  TensorDataContainer(T value)                  \
+      : sizes_(),                               \
+        scalar_type_(at::k##S),                 \
+        type_(TensorDataContainerType::Scalar), \
+        scalar_(value) {}
+  // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
+  AT_FORALL_SCALAR_TYPES_AND3(Bool, Half, BFloat16, TENSOR)
+  // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
+  AT_FORALL_COMPLEX_TYPES(TENSOR)
+#undef TENSOR
+  // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
+  TensorDataContainer(std::initializer_list<TensorDataContainer> init_list)
+      : sizes_(),
+        scalar_type_(init_list.begin()->scalar_type()),
+        type_(TensorDataContainerType::InitList),
+        init_list_(init_list) {
+    const TensorDataContainer& first_elem = *(init_list.begin());
+    for (const auto& elem : init_list) {
+      TORCH_CHECK(
+          elem.sizes() == first_elem.sizes(),
+          "Expected all sub-lists to have sizes: ",
+          first_elem.sizes(),
+          " (e.g. ",
+          first_elem,
+          "), ",
+          "but got sub-list ",
+          elem,
+          " with sizes: ",
+          elem.sizes());
+      TORCH_CHECK(
+          elem.scalar_type() == first_elem.scalar_type(),
+          "Expected all elements of the tensor to have the same scalar type: ",
+          first_elem.scalar_type(),
+          ", but got element of scalar type: ",
+          elem.scalar_type());
+    }
+    sizes_.reserve(first_elem.sizes().size() + 1);
+    sizes_.push_back(init_list.size());
+    sizes_.insert(
+        sizes_.end(), first_elem.sizes().begin(), first_elem.sizes().end());
+  }
+
+#define TENSOR(T, S)                                                          \
+  TensorDataContainer(at::ArrayRef<T> values)                                 \
+      : sizes_({(int64_t)values.size()}),                                     \
+        scalar_type_(at::k##S),                                               \
+        type_(TensorDataContainerType::Tensor) {                              \
+    at::AutoDispatchBelowAutograd mode;                                       \
+    if (scalar_type_ == at::kBool) {                                          \
+      tensor_ = at::tensor(values, at::TensorOptions().device(at::kCPU));     \
+    } else {                                                                  \
+      tensor_ = at::tensor(values, at::dtype(scalar_type_).device(at::kCPU)); \
+    }                                                                         \
+  }
+  // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
+  AT_FORALL_SCALAR_TYPES_AND3(Bool, Half, BFloat16, TENSOR)
+  // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
+  AT_FORALL_COMPLEX_TYPES(TENSOR)
+#undef TENSOR
+
+  // NOTE: We need to handle `std::vector` explicitly instead of relying on an
+  // implicit conversion to `at::ArrayRef`, otherwise the following error can be
+  // thrown when calling `torch::tensor(std::vector<int>({1, 2}))`:
+  // ```
+  // error: no matching function for call to 'tensor(const std::vector<int>&)'
+  // no known conversion for argument 1 from 'const std::vector<int>' to
+  // 'torch::detail::TensorDataContainer'
+  // ```
+  //
+  // NOTE: `torch::tensor(std::vector<bool>)` is not supported for now, because
+  // ArrayRef<bool> cannot be constructed from a std::vector<bool> bitfield.
+#define TENSOR(T, S)                                \
+  TensorDataContainer(const std::vector<T>& values) \
+      : TensorDataContainer(at::ArrayRef<T>(values)) {}
+  // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
+  AT_FORALL_SCALAR_TYPES_AND2(Half, BFloat16, TENSOR)
+  // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
+  AT_FORALL_COMPLEX_TYPES(TENSOR)
+#undef TENSOR
+
+  bool is_scalar() const {
+    return type_ == TensorDataContainerType::Scalar;
+  }
+
+  const c10::Scalar& scalar() const {
+    TORCH_CHECK(
+        is_scalar(),
+        "Can only call `scalar()` on a TensorDataContainer that has `is_scalar() == true`");
+    return scalar_;
+  }
+
+  bool is_init_list() const {
+    return type_ == TensorDataContainerType::InitList;
+  }
+
+  const std::initializer_list<TensorDataContainer>& init_list() const {
+    TORCH_CHECK(
+        is_init_list(),
+        "Can only call `init_list()` on a TensorDataContainer that has `is_init_list() == true`");
+    return init_list_;
+  }
+
+  bool is_tensor() const {
+    return type_ == TensorDataContainerType::Tensor;
+  }
+
+  const at::Tensor& tensor() const {
+    TORCH_CHECK(
+        is_tensor(),
+        "Can only call `tensor()` on a TensorDataContainer that has `is_tensor() == true`");
+    return tensor_;
+  }
+
+  const std::vector<int64_t>& sizes() const {
+    return sizes_;
+  }
+
+  const c10::ScalarType& scalar_type() const {
+    return scalar_type_;
+  }
+
+  at::Tensor convert_to_tensor(at::TensorOptions options) const {
+    if (!options.has_dtype()) {
+      options = options.dtype(compute_desired_dtype(scalar_type_));
+    }
+
+    if (is_scalar()) {
+      at::AutoDispatchBelowAutograd mode;
+      return at::scalar_tensor(scalar_, options);
+    } else if (is_init_list()) {
+      // NOTE: Here we explicitly choose to initialize the tensor on CPU first,
+      // fill each element of the tensor, and then move the tensor to the
+      // desired device. For CUDA device, this approach only involves 1 CUDA
+      // kernel launch, and is much faster than initializing the tensor on CUDA
+      // first and then filling each element of it (which involves `N` CUDA
+      // kernel launches where `N` is the number of the elements in the tensor).
+      at::Tensor tensor = ([&]() {
+        at::AutoDispatchBelowAutograd mode;
+        return at::empty(sizes_, options.device(at::kCPU));
+      })();
+      fill_tensor(tensor);
+      return tensor.to(options.device());
+    } else if (is_tensor()) {
+      auto output = tensor_.to(options);
+      TORCH_CHECK(
+          !tensor_.is_complex() || output.is_complex(),
+          "can not do torch::tensor(complex, dtype=non-complex) because complex can not be casted to real number without loss of information");
+      return output;
+    } else {
+      TORCH_INTERNAL_ASSERT(false, "Invalid TensorDataContainer type");
+    }
+  }
+
+  void pretty_print_recursive(std::ostream& stream) const {
+    if (is_scalar()) {
+      AT_DISPATCH_ALL_TYPES_AND3(
+          at::kBool,
+          at::kHalf,
+          at::kBFloat16,
+          scalar_type_,
+          "TensorDataContainer_pretty_print_scalar",
+          [&] { stream << scalar_.to<scalar_t>(); });
+    } else if (is_init_list()) {
+      stream << "{";
+      for (const TensorDataContainer* it = init_list_.begin();
+           it != init_list_.end();
+           it++) {
+        stream << *it;
+        if (std::next(it) != init_list_.end())
+          stream << ", ";
+      }
+      stream << "}";
+    } else if (is_tensor()) {
+      stream << "{";
+      for (const auto i : c10::irange(tensor_.sizes()[0])) {
+        AT_DISPATCH_ALL_TYPES_AND3(
+            at::kBool,
+            at::kHalf,
+            at::kBFloat16,
+            scalar_type_,
+            "TensorDataContainer_pretty_print_tensor_item",
+            [&] { stream << tensor_[i].item<scalar_t>(); });
+        if (i != tensor_.sizes()[0] - 1)
+          stream << ", ";
+      }
+      stream << "}";
+    } else {
+      TORCH_INTERNAL_ASSERT(false, "Invalid TensorDataContainer type");
+    }
+  }
+
+ private:
+  void fill_tensor(at::Tensor& tensor) const {
+    if (is_scalar()) {
+      TORCH_INTERNAL_ASSERT(
+          tensor.dim() == 0,
+          "Expected a 0-dim Tensor, but got Tensor with dimensions: ",
+          tensor.dim());
+      at::NoGradGuard guard;
+      tensor.fill_(scalar_);
+    } else if (is_init_list()) {
+      TORCH_INTERNAL_ASSERT(
+          tensor.sizes()[0] == (int64_t)init_list_.size(),
+          "Expected a Tensor with size ",
+          init_list_.size(),
+          " in its first dimension, but got Tensor with size ",
+          tensor.sizes()[0],
+          " in its first dimension");
+      size_t index = 0;
+      for (const auto& elem : init_list_) {
+        at::Tensor slice = tensor[index];
+        elem.fill_tensor(slice);
+        index++;
+      }
+    } else if (is_tensor()) {
+      TORCH_INTERNAL_ASSERT(
+          false,
+          "TensorDataContainer is already a Tensor type, `fill_tensor` should not be called");
+    } else {
+      TORCH_INTERNAL_ASSERT(false, "Invalid TensorDataContainer type");
+    }
+  }
+
+  std::vector<int64_t> sizes_;
+  c10::ScalarType scalar_type_;
+  TensorDataContainerType type_;
+  c10::Scalar scalar_;
+  std::initializer_list<TensorDataContainer> init_list_;
+  at::Tensor tensor_;
+};
+
+inline std::ostream& operator<<(
+    std::ostream& stream,
+    const TensorDataContainer& tensor_data_container) {
+  tensor_data_container.pretty_print_recursive(stream);
+  return stream;
+}
+
+} // namespace detail
+
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/detail/static.h

@@ -0,0 +1,65 @@
+#pragma once
+
+#include <torch/csrc/utils/variadic.h>
+#include <torch/types.h>
+
+#include <cstdint>
+#include <type_traits>
+
+namespace torch {
+namespace nn {
+class Module;
+} // namespace nn
+} // namespace torch
+
+namespace torch {
+namespace detail {
+/// Detects if a type T has a forward() method.
+template <typename T>
+struct has_forward {
+  // Declare two types with differing size.
+  using yes = int8_t;
+  using no = int16_t;
+
+  // Here we declare two functions. The first is only enabled if `&U::forward`
+  // is well-formed and returns the `yes` type. In C++, the ellipsis parameter
+  // type (`...`) always puts the function at the bottom of overload resolution.
+  // This is specified in the standard as: 1) A standard conversion sequence is
+  // always better than a user-defined conversion sequence or an ellipsis
+  // conversion sequence. 2) A user-defined conversion sequence is always better
+  // than an ellipsis conversion sequence This means that if the first overload
+  // is viable, it will be preferred over the second as long as we pass any
+  // convertible type. The type of `&U::forward` is a pointer type, so we can
+  // pass e.g. 0.
+  template <typename U>
+  static yes test(decltype(&U::forward));
+  template <typename U>
+  static no test(...);
+
+  // Finally we test statically whether the size of the type returned by the
+  // selected overload is the size of the `yes` type.
+  static constexpr bool value = (sizeof(test<T>(nullptr)) == sizeof(yes));
+};
+
+template <typename Head = void, typename... Tail>
+constexpr bool check_not_lvalue_references() {
+  return (!std::is_lvalue_reference<Head>::value ||
+          std::is_const<typename std::remove_reference<Head>::type>::value) &&
+      check_not_lvalue_references<Tail...>();
+}
+
+template <>
+inline constexpr bool check_not_lvalue_references<void>() {
+  return true;
+}
+
+/// A type trait whose `value` member is true if `M` derives from `Module`.
+template <typename M>
+using is_module =
+    std::is_base_of<torch::nn::Module, typename std::decay<M>::type>;
+
+template <typename M, typename T = void>
+using enable_if_module_t =
+    typename std::enable_if<is_module<M>::value, T>::type;
+} // namespace detail
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/enum.h

@@ -0,0 +1,212 @@
+#pragma once
+
+#include <string>
+#include <variant>
+
+#include <ATen/core/Reduction.h>
+#include <c10/util/Exception.h>
+#include <torch/csrc/Export.h>
+
+#define TORCH_ENUM_DECLARE(name)                                      \
+  namespace torch {                                                   \
+  namespace enumtype {                                                \
+  /*                                                                  \
+    NOTE: We need to provide the default constructor for each struct, \
+    otherwise Clang 3.8 would complain:                               \
+    ```                                                               \
+    error: default initialization of an object of const type 'const   \
+    enumtype::Enum1' without a user-provided default constructor      \
+    ```                                                               \
+  */                                                                  \
+  struct k##name {                                                    \
+    k##name() {}                                                      \
+  };                                                                  \
+  }                                                                   \
+  TORCH_API extern const enumtype::k##name k##name;                   \
+  }
+
+#define TORCH_ENUM_DEFINE(name)    \
+  namespace torch {                \
+  const enumtype::k##name k##name; \
+  }
+
+#define TORCH_ENUM_PRETTY_PRINT(name)                        \
+  std::string operator()(const enumtype::k##name& v) const { \
+    std::string k("k");                                      \
+    return k + #name;                                        \
+  }
+
+// NOTE: Backstory on why we need the following two macros:
+//
+// Consider the following options class:
+//
+// ```
+// struct TORCH_API SomeOptions {
+//   typedef std::variant<enumtype::kNone, enumtype::kMean, enumtype::kSum>
+//   reduction_t; SomeOptions(reduction_t reduction = torch::kMean) :
+//   reduction_(reduction) {}
+//
+//   TORCH_ARG(reduction_t, reduction);
+// };
+// ```
+//
+// and the functional that uses it:
+//
+// ```
+// Tensor some_functional(
+//     const Tensor& input,
+//     SomeOptions options = {}) {
+//   ...
+// }
+// ```
+//
+// Normally, we would expect this to work:
+//
+// `F::some_functional(input, torch::kNone)`
+//
+// However, it throws the following error instead:
+//
+// ```
+// error: could not convert `torch::kNone` from `const torch::enumtype::kNone`
+// to `torch::nn::SomeOptions`
+// ```
+//
+// To get around this problem, we explicitly provide the following constructors
+// for `SomeOptions`:
+//
+// ```
+// SomeOptions(torch::enumtype::kNone reduction) : reduction_(torch::kNone) {}
+// SomeOptions(torch::enumtype::kMean reduction) : reduction_(torch::kMean) {}
+// SomeOptions(torch::enumtype::kSum reduction) : reduction_(torch::kSum) {}
+// ```
+//
+// so that the conversion from `torch::kNone` to `SomeOptions` would work.
+//
+// Note that we also provide the default constructor `SomeOptions() {}`, so that
+// `SomeOptions options = {}` can work.
+#define TORCH_OPTIONS_CTOR_VARIANT_ARG3(                                       \
+    OPTIONS_NAME, ARG_NAME, TYPE1, TYPE2, TYPE3)                               \
+  OPTIONS_NAME() = default;                                                    \
+  OPTIONS_NAME(torch::enumtype::TYPE1 ARG_NAME) : ARG_NAME##_(torch::TYPE1) {} \
+  OPTIONS_NAME(torch::enumtype::TYPE2 ARG_NAME) : ARG_NAME##_(torch::TYPE2) {} \
+  OPTIONS_NAME(torch::enumtype::TYPE3 ARG_NAME) : ARG_NAME##_(torch::TYPE3) {}
+
+#define TORCH_OPTIONS_CTOR_VARIANT_ARG4(                                       \
+    OPTIONS_NAME, ARG_NAME, TYPE1, TYPE2, TYPE3, TYPE4)                        \
+  OPTIONS_NAME() = default;                                                    \
+  OPTIONS_NAME(torch::enumtype::TYPE1 ARG_NAME) : ARG_NAME##_(torch::TYPE1) {} \
+  OPTIONS_NAME(torch::enumtype::TYPE2 ARG_NAME) : ARG_NAME##_(torch::TYPE2) {} \
+  OPTIONS_NAME(torch::enumtype::TYPE3 ARG_NAME) : ARG_NAME##_(torch::TYPE3) {} \
+  OPTIONS_NAME(torch::enumtype::TYPE4 ARG_NAME) : ARG_NAME##_(torch::TYPE4) {}
+
+TORCH_ENUM_DECLARE(Linear)
+TORCH_ENUM_DECLARE(Conv1D)
+TORCH_ENUM_DECLARE(Conv2D)
+TORCH_ENUM_DECLARE(Conv3D)
+TORCH_ENUM_DECLARE(ConvTranspose1D)
+TORCH_ENUM_DECLARE(ConvTranspose2D)
+TORCH_ENUM_DECLARE(ConvTranspose3D)
+TORCH_ENUM_DECLARE(Sigmoid)
+TORCH_ENUM_DECLARE(Tanh)
+TORCH_ENUM_DECLARE(ReLU)
+TORCH_ENUM_DECLARE(GELU)
+TORCH_ENUM_DECLARE(SiLU)
+TORCH_ENUM_DECLARE(Mish)
+TORCH_ENUM_DECLARE(LeakyReLU)
+TORCH_ENUM_DECLARE(FanIn)
+TORCH_ENUM_DECLARE(FanOut)
+TORCH_ENUM_DECLARE(Constant)
+TORCH_ENUM_DECLARE(Reflect)
+TORCH_ENUM_DECLARE(Replicate)
+TORCH_ENUM_DECLARE(Circular)
+TORCH_ENUM_DECLARE(Nearest)
+TORCH_ENUM_DECLARE(Bilinear)
+TORCH_ENUM_DECLARE(Bicubic)
+TORCH_ENUM_DECLARE(Trilinear)
+TORCH_ENUM_DECLARE(Area)
+TORCH_ENUM_DECLARE(NearestExact)
+TORCH_ENUM_DECLARE(Sum)
+TORCH_ENUM_DECLARE(Mean)
+TORCH_ENUM_DECLARE(Max)
+TORCH_ENUM_DECLARE(None)
+TORCH_ENUM_DECLARE(BatchMean)
+TORCH_ENUM_DECLARE(Zeros)
+TORCH_ENUM_DECLARE(Border)
+TORCH_ENUM_DECLARE(Reflection)
+TORCH_ENUM_DECLARE(RNN_TANH)
+TORCH_ENUM_DECLARE(RNN_RELU)
+TORCH_ENUM_DECLARE(LSTM)
+TORCH_ENUM_DECLARE(GRU)
+TORCH_ENUM_DECLARE(Valid)
+TORCH_ENUM_DECLARE(Same)
+
+namespace torch {
+namespace enumtype {
+
+struct _compute_enum_name {
+  TORCH_ENUM_PRETTY_PRINT(Linear)
+  TORCH_ENUM_PRETTY_PRINT(Conv1D)
+  TORCH_ENUM_PRETTY_PRINT(Conv2D)
+  TORCH_ENUM_PRETTY_PRINT(Conv3D)
+  TORCH_ENUM_PRETTY_PRINT(ConvTranspose1D)
+  TORCH_ENUM_PRETTY_PRINT(ConvTranspose2D)
+  TORCH_ENUM_PRETTY_PRINT(ConvTranspose3D)
+  TORCH_ENUM_PRETTY_PRINT(Sigmoid)
+  TORCH_ENUM_PRETTY_PRINT(Tanh)
+  TORCH_ENUM_PRETTY_PRINT(ReLU)
+  TORCH_ENUM_PRETTY_PRINT(GELU)
+  TORCH_ENUM_PRETTY_PRINT(SiLU)
+  TORCH_ENUM_PRETTY_PRINT(Mish)
+  TORCH_ENUM_PRETTY_PRINT(LeakyReLU)
+  TORCH_ENUM_PRETTY_PRINT(FanIn)
+  TORCH_ENUM_PRETTY_PRINT(FanOut)
+  TORCH_ENUM_PRETTY_PRINT(Constant)
+  TORCH_ENUM_PRETTY_PRINT(Reflect)
+  TORCH_ENUM_PRETTY_PRINT(Replicate)
+  TORCH_ENUM_PRETTY_PRINT(Circular)
+  TORCH_ENUM_PRETTY_PRINT(Nearest)
+  TORCH_ENUM_PRETTY_PRINT(Bilinear)
+  TORCH_ENUM_PRETTY_PRINT(Bicubic)
+  TORCH_ENUM_PRETTY_PRINT(Trilinear)
+  TORCH_ENUM_PRETTY_PRINT(Area)
+  TORCH_ENUM_PRETTY_PRINT(NearestExact)
+  TORCH_ENUM_PRETTY_PRINT(Sum)
+  TORCH_ENUM_PRETTY_PRINT(Mean)
+  TORCH_ENUM_PRETTY_PRINT(Max)
+  TORCH_ENUM_PRETTY_PRINT(None)
+  TORCH_ENUM_PRETTY_PRINT(BatchMean)
+  TORCH_ENUM_PRETTY_PRINT(Zeros)
+  TORCH_ENUM_PRETTY_PRINT(Border)
+  TORCH_ENUM_PRETTY_PRINT(Reflection)
+  TORCH_ENUM_PRETTY_PRINT(RNN_TANH)
+  TORCH_ENUM_PRETTY_PRINT(RNN_RELU)
+  TORCH_ENUM_PRETTY_PRINT(LSTM)
+  TORCH_ENUM_PRETTY_PRINT(GRU)
+  TORCH_ENUM_PRETTY_PRINT(Valid)
+  TORCH_ENUM_PRETTY_PRINT(Same)
+};
+
+template <typename V>
+std::string get_enum_name(V variant_enum) {
+  return std::visit(enumtype::_compute_enum_name{}, variant_enum);
+}
+
+template <typename V>
+at::Reduction::Reduction reduction_get_enum(V variant_enum) {
+  if (std::holds_alternative<enumtype::kNone>(variant_enum)) {
+    return at::Reduction::None;
+  } else if (std::holds_alternative<enumtype::kMean>(variant_enum)) {
+    return at::Reduction::Mean;
+  } else if (std::holds_alternative<enumtype::kSum>(variant_enum)) {
+    return at::Reduction::Sum;
+  } else {
+    TORCH_CHECK(
+        false,
+        get_enum_name(variant_enum),
+        " is not a valid value for reduction");
+    return at::Reduction::END;
+  }
+}
+
+} // namespace enumtype
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/expanding_array.h

@@ -0,0 +1,182 @@
+#pragma once
+
+#include <c10/util/ArrayRef.h>
+#include <c10/util/Exception.h>
+#include <c10/util/Optional.h>
+#include <c10/util/irange.h>
+
+#include <algorithm>
+#include <array>
+#include <cstdint>
+#include <initializer_list>
+#include <string>
+#include <vector>
+
+namespace torch {
+
+/// A utility class that accepts either a container of `D`-many values, or a
+/// single value, which is internally repeated `D` times. This is useful to
+/// represent parameters that are multidimensional, but often equally sized in
+/// all dimensions. For example, the kernel size of a 2D convolution has an `x`
+/// and `y` length, but `x` and `y` are often equal. In such a case you could
+/// just pass `3` to an `ExpandingArray<2>` and it would "expand" to `{3, 3}`.
+template <size_t D, typename T = int64_t>
+class ExpandingArray {
+ public:
+  /// Constructs an `ExpandingArray` from an `initializer_list`. The extent of
+  /// the length is checked against the `ExpandingArray`'s extent parameter `D`
+  /// at runtime.
+  /*implicit*/ ExpandingArray(std::initializer_list<T> list)
+      : ExpandingArray(at::ArrayRef<T>(list)) {}
+
+  /// Constructs an `ExpandingArray` from an `std::vector`. The extent of
+  /// the length is checked against the `ExpandingArray`'s extent parameter `D`
+  /// at runtime.
+  /*implicit*/ ExpandingArray(std::vector<T> vec)
+      : ExpandingArray(at::ArrayRef<T>(vec)) {}
+
+  /// Constructs an `ExpandingArray` from an `at::ArrayRef`. The extent of
+  /// the length is checked against the `ExpandingArray`'s extent parameter `D`
+  /// at runtime.
+  /*implicit*/ ExpandingArray(at::ArrayRef<T> values) {
+    // clang-format off
+    TORCH_CHECK(
+        values.size() == D,
+        "Expected ", D, " values, but instead got ", values.size());
+    // clang-format on
+    std::copy(values.begin(), values.end(), values_.begin());
+  }
+
+  /// Constructs an `ExpandingArray` from a single value, which is repeated `D`
+  /// times (where `D` is the extent parameter of the `ExpandingArray`).
+  /*implicit*/ ExpandingArray(T single_size) {
+    values_.fill(single_size);
+  }
+
+  /// Constructs an `ExpandingArray` from a correctly sized `std::array`.
+  /*implicit*/ ExpandingArray(const std::array<T, D>& values)
+      : values_(values) {}
+
+  /// Accesses the underlying `std::array`.
+  std::array<T, D>& operator*() {
+    return values_;
+  }
+
+  /// Accesses the underlying `std::array`.
+  const std::array<T, D>& operator*() const {
+    return values_;
+  }
+
+  /// Accesses the underlying `std::array`.
+  std::array<T, D>* operator->() {
+    return &values_;
+  }
+
+  /// Accesses the underlying `std::array`.
+  const std::array<T, D>* operator->() const {
+    return &values_;
+  }
+
+  /// Returns an `ArrayRef` to the underlying `std::array`.
+  operator at::ArrayRef<T>() const {
+    return values_;
+  }
+
+  /// Returns the extent of the `ExpandingArray`.
+  size_t size() const noexcept {
+    return D;
+  }
+
+ protected:
+  /// The backing array.
+  // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
+  std::array<T, D> values_;
+};
+
+template <size_t D, typename T>
+std::ostream& operator<<(
+    std::ostream& stream,
+    const ExpandingArray<D, T>& expanding_array) {
+  if (expanding_array.size() == 1) {
+    return stream << expanding_array->at(0);
+  }
+  return stream << static_cast<at::ArrayRef<T>>(expanding_array);
+}
+
+/// A utility class that accepts either a container of `D`-many
+/// `c10::optional<T>` values, or a single `c10::optional<T>` value, which is
+/// internally repeated `D` times. It has the additional ability to accept
+/// containers of the underlying type `T` and convert them to a container of
+/// `c10::optional<T>`.
+template <size_t D, typename T = int64_t>
+class ExpandingArrayWithOptionalElem
+    : public ExpandingArray<D, c10::optional<T>> {
+ public:
+  using ExpandingArray<D, c10::optional<T>>::ExpandingArray;
+
+  /// Constructs an `ExpandingArrayWithOptionalElem` from an `initializer_list`
+  /// of the underlying type `T`. The extent of the length is checked against
+  /// the `ExpandingArrayWithOptionalElem`'s extent parameter `D` at runtime.
+  /*implicit*/ ExpandingArrayWithOptionalElem(std::initializer_list<T> list)
+      : ExpandingArrayWithOptionalElem(at::ArrayRef<T>(list)) {}
+
+  /// Constructs an `ExpandingArrayWithOptionalElem` from an `std::vector` of
+  /// the underlying type `T`. The extent of the length is checked against the
+  /// `ExpandingArrayWithOptionalElem`'s extent parameter `D` at runtime.
+  /*implicit*/ ExpandingArrayWithOptionalElem(std::vector<T> vec)
+      : ExpandingArrayWithOptionalElem(at::ArrayRef<T>(vec)) {}
+
+  /// Constructs an `ExpandingArrayWithOptionalElem` from an `at::ArrayRef` of
+  /// the underlying type `T`. The extent of the length is checked against the
+  /// `ExpandingArrayWithOptionalElem`'s extent parameter `D` at runtime.
+  /*implicit*/ ExpandingArrayWithOptionalElem(at::ArrayRef<T> values)
+      : ExpandingArray<D, c10::optional<T>>(0) {
+    // clang-format off
+    TORCH_CHECK(
+        values.size() == D,
+        "Expected ", D, " values, but instead got ", values.size());
+    // clang-format on
+    for (const auto i : c10::irange(this->values_.size())) {
+      this->values_[i] = values[i];
+    }
+  }
+
+  /// Constructs an `ExpandingArrayWithOptionalElem` from a single value of the
+  /// underlying type `T`, which is repeated `D` times (where `D` is the extent
+  /// parameter of the `ExpandingArrayWithOptionalElem`).
+  /*implicit*/ ExpandingArrayWithOptionalElem(T single_size)
+      : ExpandingArray<D, c10::optional<T>>(0) {
+    for (const auto i : c10::irange(this->values_.size())) {
+      this->values_[i] = single_size;
+    }
+  }
+
+  /// Constructs an `ExpandingArrayWithOptionalElem` from a correctly sized
+  /// `std::array` of the underlying type `T`.
+  /*implicit*/ ExpandingArrayWithOptionalElem(const std::array<T, D>& values)
+      : ExpandingArray<D, c10::optional<T>>(0) {
+    for (const auto i : c10::irange(this->values_.size())) {
+      this->values_[i] = values[i];
+    }
+  }
+};
+
+template <size_t D, typename T>
+std::ostream& operator<<(
+    std::ostream& stream,
+    const ExpandingArrayWithOptionalElem<D, T>& expanding_array_with_opt_elem) {
+  if (expanding_array_with_opt_elem.size() == 1) {
+    const auto& elem = expanding_array_with_opt_elem->at(0);
+    stream << (elem.has_value() ? c10::str(elem.value()) : "None");
+  } else {
+    std::vector<std::string> str_array;
+    for (const auto& elem : *expanding_array_with_opt_elem) {
+      str_array.emplace_back(
+          elem.has_value() ? c10::str(elem.value()) : "None");
+    }
+    stream << at::ArrayRef<std::string>(str_array);
+  }
+  return stream;
+}
+
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/fft.h

@@ -0,0 +1,389 @@
+#pragma once
+
+#include <ATen/ATen.h>
+
+namespace torch {
+namespace fft {
+
+/// Computes the 1 dimensional fast Fourier transform over a given dimension.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.fft.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn(128, dtype=kComplexDouble);
+/// torch::fft::fft(t);
+/// ```
+inline Tensor fft(
+    const Tensor& self,
+    c10::optional<SymInt> n = c10::nullopt,
+    int64_t dim = -1,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_fft_symint(self, n, dim, norm);
+}
+
+/// Computes the 1 dimensional inverse Fourier transform over a given dimension.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.ifft.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn(128, dtype=kComplexDouble);
+/// torch::fft::ifft(t);
+/// ```
+inline Tensor ifft(
+    const Tensor& self,
+    c10::optional<SymInt> n = c10::nullopt,
+    int64_t dim = -1,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_ifft_symint(self, n, dim, norm);
+}
+
+/// Computes the 2-dimensional fast Fourier transform over the given dimensions.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.fft2.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 128}, dtype=kComplexDouble);
+/// torch::fft::fft2(t);
+/// ```
+inline Tensor fft2(
+    const Tensor& self,
+    OptionalIntArrayRef s = c10::nullopt,
+    IntArrayRef dim = {-2, -1},
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_fft2(self, s, dim, norm);
+}
+
+/// Computes the inverse of torch.fft.fft2
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.ifft2.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 128}, dtype=kComplexDouble);
+/// torch::fft::ifft2(t);
+/// ```
+inline Tensor ifft2(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    IntArrayRef dim = {-2, -1},
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_ifft2(self, s, dim, norm);
+}
+
+/// Computes the N dimensional fast Fourier transform over given dimensions.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.fftn.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 128}, dtype=kComplexDouble);
+/// torch::fft::fftn(t);
+/// ```
+inline Tensor fftn(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    at::OptionalIntArrayRef dim = c10::nullopt,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_fftn(self, s, dim, norm);
+}
+
+/// Computes the N dimensional fast Fourier transform over given dimensions.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.ifftn.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 128}, dtype=kComplexDouble);
+/// torch::fft::ifftn(t);
+/// ```
+inline Tensor ifftn(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    at::OptionalIntArrayRef dim = c10::nullopt,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_ifftn(self, s, dim, norm);
+}
+
+/// Computes the 1 dimensional FFT of real input with onesided Hermitian output.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.rfft.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn(128);
+/// auto T = torch::fft::rfft(t);
+/// assert(T.is_complex() && T.numel() == 128 / 2 + 1);
+/// ```
+inline Tensor rfft(
+    const Tensor& self,
+    c10::optional<SymInt> n = c10::nullopt,
+    int64_t dim = -1,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_rfft_symint(self, n, dim, norm);
+}
+
+/// Computes the inverse of torch.fft.rfft
+///
+/// The input is a onesided Hermitian Fourier domain signal, with real-valued
+/// output. See https://pytorch.org/docs/master/fft.html#torch.fft.irfft
+///
+/// Example:
+/// ```
+/// auto T = torch::randn(128 / 2 + 1, torch::kComplexDouble);
+/// auto t = torch::fft::irfft(t, /*n=*/128);
+/// assert(t.is_floating_point() && T.numel() == 128);
+/// ```
+inline Tensor irfft(
+    const Tensor& self,
+    c10::optional<SymInt> n = c10::nullopt,
+    int64_t dim = -1,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_irfft_symint(self, n, dim, norm);
+}
+
+/// Computes the 2-dimensional FFT of real input. Returns a onesided Hermitian
+/// output. See https://pytorch.org/docs/master/fft.html#torch.fft.rfft2
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 128}, dtype=kDouble);
+/// torch::fft::rfft2(t);
+/// ```
+inline Tensor rfft2(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    IntArrayRef dim = {-2, -1},
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_rfft2(self, s, dim, norm);
+}
+
+/// Computes the inverse of torch.fft.rfft2.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.irfft2.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 128}, dtype=kComplexDouble);
+/// torch::fft::irfft2(t);
+/// ```
+inline Tensor irfft2(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    IntArrayRef dim = {-2, -1},
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_irfft2(self, s, dim, norm);
+}
+
+/// Computes the N dimensional FFT of real input with onesided Hermitian output.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.rfftn
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 128}, dtype=kDouble);
+/// torch::fft::rfftn(t);
+/// ```
+inline Tensor rfftn(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    at::OptionalIntArrayRef dim = c10::nullopt,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_rfftn(self, s, dim, norm);
+}
+
+/// Computes the inverse of torch.fft.rfftn.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.irfftn.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 128}, dtype=kComplexDouble);
+/// torch::fft::irfftn(t);
+/// ```
+inline Tensor irfftn(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    at::OptionalIntArrayRef dim = c10::nullopt,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_irfftn(self, s, dim, norm);
+}
+
+/// Computes the 1 dimensional FFT of a onesided Hermitian signal
+///
+/// The input represents a Hermitian symmetric time domain signal. The returned
+/// Fourier domain representation of such a signal is a real-valued. See
+/// https://pytorch.org/docs/master/fft.html#torch.fft.hfft
+///
+/// Example:
+/// ```
+/// auto t = torch::randn(128 / 2 + 1, torch::kComplexDouble);
+/// auto T = torch::fft::hfft(t, /*n=*/128);
+/// assert(T.is_floating_point() && T.numel() == 128);
+/// ```
+inline Tensor hfft(
+    const Tensor& self,
+    c10::optional<SymInt> n = c10::nullopt,
+    int64_t dim = -1,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_hfft_symint(self, n, dim, norm);
+}
+
+/// Computes the inverse FFT of a real-valued Fourier domain signal.
+///
+/// The output is a onesided representation of the Hermitian symmetric time
+/// domain signal. See https://pytorch.org/docs/master/fft.html#torch.fft.ihfft.
+///
+/// Example:
+/// ```
+/// auto T = torch::randn(128, torch::kDouble);
+/// auto t = torch::fft::ihfft(T);
+/// assert(t.is_complex() && T.numel() == 128 / 2 + 1);
+/// ```
+inline Tensor ihfft(
+    const Tensor& self,
+    c10::optional<SymInt> n = c10::nullopt,
+    int64_t dim = -1,
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_ihfft_symint(self, n, dim, norm);
+}
+
+/// Computes the 2-dimensional FFT of a Hermitian symmetric input signal.
+///
+/// The input is a onesided representation of the Hermitian symmetric time
+/// domain signal. See https://pytorch.org/docs/master/fft.html#torch.fft.hfft2.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 65}, torch::kComplexDouble);
+/// auto T = torch::fft::hfft2(t, /*s=*/{128, 128});
+/// assert(T.is_floating_point() && T.numel() == 128 * 128);
+/// ```
+inline Tensor hfft2(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    IntArrayRef dim = {-2, -1},
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_hfft2(self, s, dim, norm);
+}
+
+/// Computes the 2-dimensional IFFT of a real input signal.
+///
+/// The output is a onesided representation of the Hermitian symmetric time
+/// domain signal. See
+/// https://pytorch.org/docs/master/fft.html#torch.fft.ihfft2.
+///
+/// Example:
+/// ```
+/// auto T = torch::randn({128, 128}, torch::kDouble);
+/// auto t = torch::fft::hfft2(T);
+/// assert(t.is_complex() && t.size(1) == 65);
+/// ```
+inline Tensor ihfft2(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    IntArrayRef dim = {-2, -1},
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_ihfft2(self, s, dim, norm);
+}
+
+/// Computes the N-dimensional FFT of a Hermitian symmetric input signal.
+///
+/// The input is a onesided representation of the Hermitian symmetric time
+/// domain signal. See https://pytorch.org/docs/master/fft.html#torch.fft.hfftn.
+///
+/// Example:
+/// ```
+/// auto t = torch::randn({128, 65}, torch::kComplexDouble);
+/// auto T = torch::fft::hfftn(t, /*s=*/{128, 128});
+/// assert(T.is_floating_point() && T.numel() == 128 * 128);
+/// ```
+inline Tensor hfftn(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    IntArrayRef dim = {-2, -1},
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_hfftn(self, s, dim, norm);
+}
+
+/// Computes the N-dimensional IFFT of a real input signal.
+///
+/// The output is a onesided representation of the Hermitian symmetric time
+/// domain signal. See
+/// https://pytorch.org/docs/master/fft.html#torch.fft.ihfftn.
+///
+/// Example:
+/// ```
+/// auto T = torch::randn({128, 128}, torch::kDouble);
+/// auto t = torch::fft::hfft2(T);
+/// assert(t.is_complex() && t.size(1) == 65);
+/// ```
+inline Tensor ihfftn(
+    const Tensor& self,
+    at::OptionalIntArrayRef s = c10::nullopt,
+    IntArrayRef dim = {-2, -1},
+    c10::optional<c10::string_view> norm = c10::nullopt) {
+  return torch::fft_ihfftn(self, s, dim, norm);
+}
+
+/// Computes the discrete Fourier Transform sample frequencies for a signal of
+/// size n.
+///
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.fftfreq
+///
+/// Example:
+/// ```
+/// auto frequencies = torch::fft::fftfreq(128, torch::kDouble);
+/// ```
+inline Tensor fftfreq(int64_t n, double d, const TensorOptions& options = {}) {
+  return torch::fft_fftfreq(n, d, options);
+}
+
+inline Tensor fftfreq(int64_t n, const TensorOptions& options = {}) {
+  return torch::fft_fftfreq(n, /*d=*/1.0, options);
+}
+
+/// Computes the sample frequencies for torch.fft.rfft with a signal of size n.
+///
+/// Like torch.fft.rfft, only the positive frequencies are included.
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.rfftfreq
+///
+/// Example:
+/// ```
+/// auto frequencies = torch::fft::rfftfreq(128, torch::kDouble);
+/// ```
+inline Tensor rfftfreq(int64_t n, double d, const TensorOptions& options) {
+  return torch::fft_rfftfreq(n, d, options);
+}
+
+inline Tensor rfftfreq(int64_t n, const TensorOptions& options) {
+  return torch::fft_rfftfreq(n, /*d=*/1.0, options);
+}
+
+/// Reorders n-dimensional FFT output to have negative frequency terms first, by
+/// a torch.roll operation.
+///
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.fftshift
+///
+/// Example:
+/// ```
+/// auto x = torch::randn({127, 4});
+/// auto centred_fft = torch::fft::fftshift(torch::fft::fftn(x));
+/// ```
+inline Tensor fftshift(
+    const Tensor& x,
+    at::OptionalIntArrayRef dim = c10::nullopt) {
+  return torch::fft_fftshift(x, dim);
+}
+
+/// Inverse of torch.fft.fftshift
+///
+/// See https://pytorch.org/docs/master/fft.html#torch.fft.ifftshift
+///
+/// Example:
+/// ```
+/// auto x = torch::randn({127, 4});
+/// auto shift = torch::fft::fftshift(x)
+/// auto unshift = torch::fft::ifftshift(shift);
+/// assert(torch::allclose(x, unshift));
+/// ```
+inline Tensor ifftshift(
+    const Tensor& x,
+    at::OptionalIntArrayRef dim = c10::nullopt) {
+  return torch::fft_ifftshift(x, dim);
+}
+
+} // namespace fft
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/imethod.h

@@ -0,0 +1,53 @@
+#pragma once
+#include <ATen/core/ivalue.h>
+#include <vector>
+
+namespace torch {
+
+class TORCH_API IMethod {
+  /*
+  IMethod provides a portable interface for torch methods, whether
+  they are backed by torchscript or python/deploy.
+
+  This is helpful since torchscript methods provide additional information
+  (e.g. FunctionSchema, Graph) which aren't available in pure python methods.
+
+  Higher level APIs should prefer depending on this interface rather
+  than a specific implementation of it, to promote portability and reuse, and
+  avoid unintentional dependencies on e.g. script methods.
+
+  Note: This API is experimental, and may evolve.
+  */
+ public:
+  using IValueList = std::vector<c10::IValue>;
+  using IValueMap = std::unordered_map<std::string, at::IValue>;
+
+  IMethod() = default;
+  IMethod(const IMethod&) = default;
+  IMethod& operator=(const IMethod&) = default;
+  IMethod(IMethod&&) noexcept = default;
+  IMethod& operator=(IMethod&&) noexcept = default;
+  virtual ~IMethod() = default;
+
+  virtual c10::IValue operator()(
+      std::vector<c10::IValue> args,
+      const IValueMap& kwargs = IValueMap()) const = 0;
+
+  virtual const std::string& name() const = 0;
+
+  // Returns an ordered list of argument names, possible in both
+  // script and python methods.  This is a more portable dependency
+  // than a ScriptMethod FunctionSchema, which has more information
+  // than can be generally expected from a python method.
+  const std::vector<std::string>& getArgumentNames() const;
+
+ protected:
+  virtual void setArgumentNames(
+      std::vector<std::string>& argumentNames) const = 0;
+
+ private:
+  mutable bool isArgumentNamesInitialized_{false};
+  mutable std::vector<std::string> argumentNames_;
+};
+
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/jit.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <torch/csrc/Export.h>
+#include <torch/csrc/jit/api/module.h>
+
+#include <memory>
+#include <string>
+
+namespace torch {
+namespace jit {
+
+/// Compiles script code into an executable graph.
+///
+/// Takes a string containing functions in script syntax and compiles them into
+/// a module (graph). The returned module provides a `run_method` function
+/// that may be used to invoke the compiled functions.
+///
+/// For example:
+/// \rst
+/// .. code-block:: cpp
+///
+///   auto module = torch::jit::compile(R"JIT(
+///     def relu_script(a, b):
+///       return torch.relu(a + b)
+///     def test_while(a, i):
+///       while i < 10:
+///         a += a
+///         i += 1
+///       return a
+///   )JIT");
+///   IValue output = module->run_method("relu_script", a, b);
+/// \endrst
+TORCH_API std::shared_ptr<CompilationUnit> compile(const std::string& source);
+
+} // namespace jit
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/linalg.h

@@ -0,0 +1,1065 @@
+#pragma once
+
+#include <ATen/ATen.h>
+
+namespace torch {
+namespace linalg {
+
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+namespace detail {
+
+inline Tensor cholesky(const Tensor& self) {
+  return torch::linalg_cholesky(self);
+}
+
+inline Tensor cholesky_out(Tensor& result, const Tensor& self) {
+  return torch::linalg_cholesky_out(result, self);
+}
+
+inline Tensor det(const Tensor& self) {
+  return torch::linalg_det(self);
+}
+
+inline std::tuple<Tensor, Tensor> slogdet(const Tensor& input) {
+  return torch::linalg_slogdet(input);
+}
+
+inline std::tuple<Tensor&, Tensor&> slogdet_out(
+    Tensor& sign,
+    Tensor& logabsdet,
+    const Tensor& input) {
+  return torch::linalg_slogdet_out(sign, logabsdet, input);
+}
+
+inline std::tuple<Tensor, Tensor> eig(const Tensor& self) {
+  return torch::linalg_eig(self);
+}
+
+inline std::tuple<Tensor&, Tensor&> eig_out(
+    Tensor& eigvals,
+    Tensor& eigvecs,
+    const Tensor& self) {
+  return torch::linalg_eig_out(eigvals, eigvecs, self);
+}
+
+inline Tensor eigvals(const Tensor& self) {
+  return torch::linalg_eigvals(self);
+}
+
+inline Tensor& eigvals_out(Tensor& result, const Tensor& self) {
+  return torch::linalg_eigvals_out(result, self);
+}
+
+inline std::tuple<Tensor, Tensor> eigh(
+    const Tensor& self,
+    c10::string_view uplo) {
+  return torch::linalg_eigh(self, uplo);
+}
+
+inline std::tuple<Tensor&, Tensor&> eigh_out(
+    Tensor& eigvals,
+    Tensor& eigvecs,
+    const Tensor& self,
+    c10::string_view uplo) {
+  return torch::linalg_eigh_out(eigvals, eigvecs, self, uplo);
+}
+
+inline Tensor eigvalsh(const Tensor& self, c10::string_view uplo) {
+  return torch::linalg_eigvalsh(self, uplo);
+}
+
+inline Tensor& eigvalsh_out(
+    Tensor& result,
+    const Tensor& self,
+    c10::string_view uplo) {
+  return torch::linalg_eigvalsh_out(result, self, uplo);
+}
+
+inline Tensor householder_product(const Tensor& input, const Tensor& tau) {
+  return torch::linalg_householder_product(input, tau);
+}
+
+inline Tensor& householder_product_out(
+    Tensor& result,
+    const Tensor& input,
+    const Tensor& tau) {
+  return torch::linalg_householder_product_out(result, input, tau);
+}
+
+inline std::tuple<Tensor, Tensor> lu_factor(
+    const Tensor& self,
+    const bool pivot) {
+  return torch::linalg_lu_factor(self, pivot);
+}
+
+inline std::tuple<Tensor&, Tensor&> lu_factor_out(
+    Tensor& LU,
+    Tensor& pivots,
+    const Tensor& self,
+    const bool pivot) {
+  return torch::linalg_lu_factor_out(LU, pivots, self, pivot);
+}
+
+inline std::tuple<Tensor, Tensor, Tensor> lu(
+    const Tensor& self,
+    const bool pivot) {
+  return torch::linalg_lu(self, pivot);
+}
+
+inline std::tuple<Tensor&, Tensor&, Tensor&> lu_out(
+    Tensor& P,
+    Tensor& L,
+    Tensor& U,
+    const Tensor& self,
+    const bool pivot) {
+  return torch::linalg_lu_out(P, L, U, self, pivot);
+}
+
+inline std::tuple<Tensor, Tensor, Tensor, Tensor> lstsq(
+    const Tensor& self,
+    const Tensor& b,
+    c10::optional<double> cond,
+    c10::optional<c10::string_view> driver) {
+  return torch::linalg_lstsq(self, b, cond, driver);
+}
+
+inline Tensor matrix_exp(const Tensor& self) {
+  return torch::linalg_matrix_exp(self);
+}
+
+inline Tensor norm(
+    const Tensor& self,
+    const optional<Scalar>& opt_ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return torch::linalg_norm(self, opt_ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor norm(
+    const Tensor& self,
+    c10::string_view ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return torch::linalg_norm(self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor& norm_out(
+    Tensor& result,
+    const Tensor& self,
+    const optional<Scalar>& opt_ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return torch::linalg_norm_out(
+      result, self, opt_ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor& norm_out(
+    Tensor& result,
+    const Tensor& self,
+    c10::string_view ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return torch::linalg_norm_out(result, self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor vector_norm(
+    const Tensor& self,
+    Scalar ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return torch::linalg_vector_norm(self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor& vector_norm_out(
+    Tensor& result,
+    const Tensor& self,
+    Scalar ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return torch::linalg_vector_norm_out(
+      result, self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor matrix_norm(
+    const Tensor& self,
+    const Scalar& ord,
+    IntArrayRef dim,
+    bool keepdim,
+    optional<ScalarType> dtype) {
+  return torch::linalg_matrix_norm(self, ord, dim, keepdim, dtype);
+}
+
+inline Tensor& matrix_norm_out(
+    const Tensor& self,
+    const Scalar& ord,
+    IntArrayRef dim,
+    bool keepdim,
+    optional<ScalarType> dtype,
+    Tensor& result) {
+  return torch::linalg_matrix_norm_out(result, self, ord, dim, keepdim, dtype);
+}
+
+inline Tensor matrix_norm(
+    const Tensor& self,
+    std::string ord,
+    IntArrayRef dim,
+    bool keepdim,
+    optional<ScalarType> dtype) {
+  return torch::linalg_matrix_norm(self, ord, dim, keepdim, dtype);
+}
+
+inline Tensor& matrix_norm_out(
+    const Tensor& self,
+    std::string ord,
+    IntArrayRef dim,
+    bool keepdim,
+    optional<ScalarType> dtype,
+    Tensor& result) {
+  return torch::linalg_matrix_norm_out(result, self, ord, dim, keepdim, dtype);
+}
+
+inline Tensor matrix_power(const Tensor& self, int64_t n) {
+  return torch::linalg_matrix_power(self, n);
+}
+
+inline Tensor& matrix_power_out(const Tensor& self, int64_t n, Tensor& result) {
+  return torch::linalg_matrix_power_out(result, self, n);
+}
+
+inline Tensor matrix_rank(const Tensor& input, double tol, bool hermitian) {
+  return torch::linalg_matrix_rank(input, tol, hermitian);
+}
+
+inline Tensor matrix_rank(
+    const Tensor& input,
+    const Tensor& tol,
+    bool hermitian) {
+  return torch::linalg_matrix_rank(input, tol, hermitian);
+}
+
+inline Tensor matrix_rank(
+    const Tensor& input,
+    c10::optional<double> atol,
+    c10::optional<double> rtol,
+    bool hermitian) {
+  return torch::linalg_matrix_rank(input, atol, rtol, hermitian);
+}
+
+inline Tensor matrix_rank(
+    const Tensor& input,
+    const c10::optional<Tensor>& atol,
+    const c10::optional<Tensor>& rtol,
+    bool hermitian) {
+  return torch::linalg_matrix_rank(input, atol, rtol, hermitian);
+}
+
+inline Tensor& matrix_rank_out(
+    Tensor& result,
+    const Tensor& input,
+    double tol,
+    bool hermitian) {
+  return torch::linalg_matrix_rank_out(result, input, tol, hermitian);
+}
+
+inline Tensor& matrix_rank_out(
+    Tensor& result,
+    const Tensor& input,
+    const Tensor& tol,
+    bool hermitian) {
+  return torch::linalg_matrix_rank_out(result, input, tol, hermitian);
+}
+
+inline Tensor& matrix_rank_out(
+    Tensor& result,
+    const Tensor& input,
+    c10::optional<double> atol,
+    c10::optional<double> rtol,
+    bool hermitian) {
+  return torch::linalg_matrix_rank_out(result, input, atol, rtol, hermitian);
+}
+
+inline Tensor& matrix_rank_out(
+    Tensor& result,
+    const Tensor& input,
+    const c10::optional<Tensor>& atol,
+    const c10::optional<Tensor>& rtol,
+    bool hermitian) {
+  return torch::linalg_matrix_rank_out(result, input, atol, rtol, hermitian);
+}
+
+inline Tensor multi_dot(TensorList tensors) {
+  return torch::linalg_multi_dot(tensors);
+}
+
+inline Tensor& multi_dot_out(TensorList tensors, Tensor& result) {
+  return torch::linalg_multi_dot_out(result, tensors);
+}
+
+inline Tensor pinv(const Tensor& input, double rcond, bool hermitian) {
+  return torch::linalg_pinv(input, rcond, hermitian);
+}
+
+inline Tensor& pinv_out(
+    Tensor& result,
+    const Tensor& input,
+    double rcond,
+    bool hermitian) {
+  return torch::linalg_pinv_out(result, input, rcond, hermitian);
+}
+
+inline std::tuple<Tensor, Tensor> qr(
+    const Tensor& input,
+    c10::string_view mode) {
+  return torch::linalg_qr(input, mode);
+}
+
+inline std::tuple<Tensor&, Tensor&> qr_out(
+    Tensor& Q,
+    Tensor& R,
+    const Tensor& input,
+    c10::string_view mode) {
+  return torch::linalg_qr_out(Q, R, input, mode);
+}
+
+inline std::tuple<Tensor, Tensor> solve_ex(
+    const Tensor& input,
+    const Tensor& other,
+    bool left,
+    bool check_errors) {
+  return torch::linalg_solve_ex(input, other, left, check_errors);
+}
+
+inline std::tuple<Tensor&, Tensor&> solve_ex_out(
+    Tensor& result,
+    Tensor& info,
+    const Tensor& input,
+    const Tensor& other,
+    bool left,
+    bool check_errors) {
+  return torch::linalg_solve_ex_out(
+      result, info, input, other, left, check_errors);
+}
+
+inline Tensor solve(const Tensor& input, const Tensor& other, bool left) {
+  return torch::linalg_solve(input, other, left);
+}
+
+inline Tensor& solve_out(
+    Tensor& result,
+    const Tensor& input,
+    const Tensor& other,
+    bool left) {
+  return torch::linalg_solve_out(result, input, other, left);
+}
+
+inline Tensor solve_triangular(
+    const Tensor& input,
+    const Tensor& other,
+    bool upper,
+    bool left,
+    bool unitriangular) {
+  return torch::linalg_solve_triangular(
+      input, other, upper, left, unitriangular);
+}
+
+inline Tensor& solve_triangular_out(
+    Tensor& result,
+    const Tensor& input,
+    const Tensor& other,
+    bool upper,
+    bool left,
+    bool unitriangular) {
+  return torch::linalg_solve_triangular_out(
+      result, input, other, upper, left, unitriangular);
+}
+
+inline std::tuple<Tensor, Tensor, Tensor> svd(
+    const Tensor& input,
+    bool full_matrices,
+    c10::optional<c10::string_view> driver) {
+  return torch::linalg_svd(input, full_matrices, driver);
+}
+
+inline std::tuple<Tensor&, Tensor&, Tensor&> svd_out(
+    Tensor& U,
+    Tensor& S,
+    Tensor& Vh,
+    const Tensor& input,
+    bool full_matrices,
+    c10::optional<c10::string_view> driver) {
+  return torch::linalg_svd_out(U, S, Vh, input, full_matrices, driver);
+}
+
+inline Tensor svdvals(
+    const Tensor& input,
+    c10::optional<c10::string_view> driver) {
+  return torch::linalg_svdvals(input, driver);
+}
+
+inline Tensor& svdvals_out(
+    Tensor& result,
+    const Tensor& input,
+    c10::optional<c10::string_view> driver) {
+  return torch::linalg_svdvals_out(result, input, driver);
+}
+
+inline Tensor tensorinv(const Tensor& self, int64_t ind) {
+  return torch::linalg_tensorinv(self, ind);
+}
+
+inline Tensor& tensorinv_out(Tensor& result, const Tensor& self, int64_t ind) {
+  return torch::linalg_tensorinv_out(result, self, ind);
+}
+
+inline Tensor tensorsolve(
+    const Tensor& self,
+    const Tensor& other,
+    OptionalIntArrayRef dims) {
+  return torch::linalg_tensorsolve(self, other, dims);
+}
+
+inline Tensor& tensorsolve_out(
+    Tensor& result,
+    const Tensor& self,
+    const Tensor& other,
+    OptionalIntArrayRef dims) {
+  return torch::linalg_tensorsolve_out(result, self, other, dims);
+}
+
+inline Tensor inv(const Tensor& input) {
+  return torch::linalg_inv(input);
+}
+
+inline Tensor& inv_out(Tensor& result, const Tensor& input) {
+  return torch::linalg_inv_out(result, input);
+}
+
+} // namespace detail
+#endif /* DOXYGEN_SHOULD_SKIP_THIS */
+
+/// Cholesky decomposition
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.cholesky
+///
+/// Example:
+/// ```
+/// auto A = torch::randn({4, 4});
+/// auto A = torch::matmul(A, A.t());
+/// auto L = torch::linalg::cholesky(A);
+/// assert(torch::allclose(torch::matmul(L, L.t()), A));
+/// ```
+inline Tensor cholesky(const Tensor& self) {
+  return detail::cholesky(self);
+}
+
+inline Tensor cholesky_out(Tensor& result, const Tensor& self) {
+  return detail::cholesky_out(result, self);
+}
+
+// C10_DEPRECATED_MESSAGE("linalg_det is deprecated, use det instead.")
+inline Tensor linalg_det(const Tensor& self) {
+  return detail::det(self);
+}
+
+/// See the documentation of torch.linalg.det
+inline Tensor det(const Tensor& self) {
+  return detail::det(self);
+}
+
+/// Computes the sign and (natural) logarithm of the determinant
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.slogdet
+inline std::tuple<Tensor, Tensor> slogdet(const Tensor& input) {
+  return detail::slogdet(input);
+}
+
+inline std::tuple<Tensor&, Tensor&> slogdet_out(
+    Tensor& sign,
+    Tensor& logabsdet,
+    const Tensor& input) {
+  return detail::slogdet_out(sign, logabsdet, input);
+}
+
+/// Computes eigenvalues and eigenvectors of non-symmetric/non-hermitian
+/// matrices
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.eig
+inline std::tuple<Tensor, Tensor> eig(const Tensor& self) {
+  return detail::eig(self);
+}
+
+inline std::tuple<Tensor&, Tensor&> eig_out(
+    Tensor& eigvals,
+    Tensor& eigvecs,
+    const Tensor& self) {
+  return detail::eig_out(eigvals, eigvecs, self);
+}
+
+/// Computes eigenvalues of non-symmetric/non-hermitian matrices
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.eigvals
+inline Tensor eigvals(const Tensor& self) {
+  return detail::eigvals(self);
+}
+
+inline Tensor& eigvals_out(Tensor& result, const Tensor& self) {
+  return detail::eigvals_out(result, self);
+}
+
+/// Computes eigenvalues and eigenvectors
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.eigh
+inline std::tuple<Tensor, Tensor> eigh(
+    const Tensor& self,
+    c10::string_view uplo) {
+  return detail::eigh(self, uplo);
+}
+
+inline std::tuple<Tensor&, Tensor&> eigh_out(
+    Tensor& eigvals,
+    Tensor& eigvecs,
+    const Tensor& self,
+    c10::string_view uplo) {
+  return detail::eigh_out(eigvals, eigvecs, self, uplo);
+}
+
+/// Computes eigenvalues
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.eigvalsh
+inline Tensor eigvalsh(const Tensor& self, c10::string_view uplo) {
+  return detail::eigvalsh(self, uplo);
+}
+
+inline Tensor& eigvalsh_out(
+    Tensor& result,
+    const Tensor& self,
+    c10::string_view uplo) {
+  return detail::eigvalsh_out(result, self, uplo);
+}
+
+/// Computes the product of Householder matrices
+///
+/// See
+/// https://pytorch.org/docs/master/linalg.html#torch.linalg.householder_product
+inline Tensor householder_product(const Tensor& input, const Tensor& tau) {
+  return detail::householder_product(input, tau);
+}
+
+inline Tensor& householder_product_out(
+    Tensor& result,
+    const Tensor& input,
+    const Tensor& tau) {
+  return detail::householder_product_out(result, input, tau);
+}
+
+inline std::tuple<Tensor, Tensor, Tensor, Tensor> lstsq(
+    const Tensor& self,
+    const Tensor& b,
+    c10::optional<double> cond,
+    c10::optional<c10::string_view> driver) {
+  return detail::lstsq(self, b, cond, driver);
+}
+
+/// Computes the matrix exponential
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.matrix_exp
+inline Tensor matrix_exp(const Tensor& input) {
+  return detail::matrix_exp(input);
+}
+
+// C10_DEPRECATED_MESSAGE("linalg_norm is deprecated, use norm instead.")
+inline Tensor linalg_norm(
+    const Tensor& self,
+    const optional<Scalar>& opt_ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::norm(self, opt_ord, opt_dim, keepdim, opt_dtype);
+}
+
+// C10_DEPRECATED_MESSAGE("linalg_norm is deprecated, use norm instead.")
+inline Tensor linalg_norm(
+    const Tensor& self,
+    c10::string_view ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::norm(self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+// C10_DEPRECATED_MESSAGE("linalg_norm_out is deprecated, use norm_out
+// instead.")
+inline Tensor& linalg_norm_out(
+    Tensor& result,
+    const Tensor& self,
+    const optional<Scalar>& opt_ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::norm_out(result, self, opt_ord, opt_dim, keepdim, opt_dtype);
+}
+
+// C10_DEPRECATED_MESSAGE("linalg_norm_out is deprecated, use norm_out
+// instead.")
+inline Tensor& linalg_norm_out(
+    Tensor& result,
+    const Tensor& self,
+    c10::string_view ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::norm_out(result, self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+/// Computes the LU factorization with partial pivoting
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.lu_factor
+inline std::tuple<Tensor, Tensor> lu_factor(
+    const Tensor& input,
+    const bool pivot = true) {
+  return detail::lu_factor(input, pivot);
+}
+
+inline std::tuple<Tensor&, Tensor&> lu_factor_out(
+    Tensor& LU,
+    Tensor& pivots,
+    const Tensor& self,
+    const bool pivot = true) {
+  return detail::lu_factor_out(LU, pivots, self, pivot);
+}
+
+/// Computes the LU factorization with partial pivoting
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.lu
+inline std::tuple<Tensor, Tensor, Tensor> lu(
+    const Tensor& input,
+    const bool pivot = true) {
+  return detail::lu(input, pivot);
+}
+
+inline std::tuple<Tensor&, Tensor&, Tensor&> lu_out(
+    Tensor& P,
+    Tensor& L,
+    Tensor& U,
+    const Tensor& self,
+    const bool pivot = true) {
+  return detail::lu_out(P, L, U, self, pivot);
+}
+
+inline Tensor norm(
+    const Tensor& self,
+    const optional<Scalar>& opt_ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::norm(self, opt_ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor norm(
+    const Tensor& self,
+    std::string ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::norm(self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor& norm_out(
+    Tensor& result,
+    const Tensor& self,
+    const optional<Scalar>& opt_ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::norm_out(result, self, opt_ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor& norm_out(
+    Tensor& result,
+    const Tensor& self,
+    std::string ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::norm_out(result, self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.vector_norm
+inline Tensor vector_norm(
+    const Tensor& self,
+    Scalar ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::vector_norm(self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+inline Tensor& vector_norm_out(
+    Tensor& result,
+    const Tensor& self,
+    Scalar ord,
+    OptionalIntArrayRef opt_dim,
+    bool keepdim,
+    optional<ScalarType> opt_dtype) {
+  return detail::vector_norm_out(
+      result, self, ord, opt_dim, keepdim, opt_dtype);
+}
+
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.matrix_norm
+inline Tensor matrix_norm(
+    const Tensor& self,
+    const Scalar& ord,
+    IntArrayRef dim,
+    bool keepdim,
+    optional<ScalarType> dtype) {
+  return detail::matrix_norm(self, ord, dim, keepdim, dtype);
+}
+
+inline Tensor& matrix_norm_out(
+    const Tensor& self,
+    const Scalar& ord,
+    IntArrayRef dim,
+    bool keepdim,
+    optional<ScalarType> dtype,
+    Tensor& result) {
+  return detail::matrix_norm_out(self, ord, dim, keepdim, dtype, result);
+}
+
+inline Tensor matrix_norm(
+    const Tensor& self,
+    std::string ord,
+    IntArrayRef dim,
+    bool keepdim,
+    optional<ScalarType> dtype) {
+  return detail::matrix_norm(self, ord, dim, keepdim, dtype);
+}
+
+inline Tensor& matrix_norm_out(
+    const Tensor& self,
+    std::string ord,
+    IntArrayRef dim,
+    bool keepdim,
+    optional<ScalarType> dtype,
+    Tensor& result) {
+  return detail::matrix_norm_out(self, ord, dim, keepdim, dtype, result);
+}
+
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.matrix_power
+inline Tensor matrix_power(const Tensor& self, int64_t n) {
+  return detail::matrix_power(self, n);
+}
+
+inline Tensor& matrix_power_out(const Tensor& self, int64_t n, Tensor& result) {
+  return detail::matrix_power_out(self, n, result);
+}
+
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.matrix_rank
+inline Tensor matrix_rank(const Tensor& input, double tol, bool hermitian) {
+  return detail::matrix_rank(input, tol, hermitian);
+}
+
+inline Tensor matrix_rank(
+    const Tensor& input,
+    const Tensor& tol,
+    bool hermitian) {
+  return detail::matrix_rank(input, tol, hermitian);
+}
+
+inline Tensor matrix_rank(
+    const Tensor& input,
+    c10::optional<double> atol,
+    c10::optional<double> rtol,
+    bool hermitian) {
+  return detail::matrix_rank(input, atol, rtol, hermitian);
+}
+
+inline Tensor matrix_rank(
+    const Tensor& input,
+    const c10::optional<Tensor>& atol,
+    const c10::optional<Tensor>& rtol,
+    bool hermitian) {
+  return detail::matrix_rank(input, atol, rtol, hermitian);
+}
+
+inline Tensor& matrix_rank_out(
+    Tensor& result,
+    const Tensor& input,
+    double tol,
+    bool hermitian) {
+  return detail::matrix_rank_out(result, input, tol, hermitian);
+}
+
+inline Tensor& matrix_rank_out(
+    Tensor& result,
+    const Tensor& input,
+    const Tensor& tol,
+    bool hermitian) {
+  return detail::matrix_rank_out(result, input, tol, hermitian);
+}
+
+inline Tensor& matrix_rank_out(
+    Tensor& result,
+    const Tensor& input,
+    c10::optional<double> atol,
+    c10::optional<double> rtol,
+    bool hermitian) {
+  return detail::matrix_rank_out(result, input, atol, rtol, hermitian);
+}
+
+inline Tensor& matrix_rank_out(
+    Tensor& result,
+    const Tensor& input,
+    const c10::optional<Tensor>& atol,
+    const c10::optional<Tensor>& rtol,
+    bool hermitian) {
+  return detail::matrix_rank_out(result, input, atol, rtol, hermitian);
+}
+
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.multi_dot
+inline Tensor multi_dot(TensorList tensors) {
+  return detail::multi_dot(tensors);
+}
+
+inline Tensor& multi_dot_out(TensorList tensors, Tensor& result) {
+  return detail::multi_dot_out(tensors, result);
+}
+
+/// Computes the pseudo-inverse
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.pinv
+inline Tensor pinv(
+    const Tensor& input,
+    double rcond = 1e-15,
+    bool hermitian = false) {
+  return detail::pinv(input, rcond, hermitian);
+}
+
+inline Tensor& pinv_out(
+    Tensor& result,
+    const Tensor& input,
+    double rcond = 1e-15,
+    bool hermitian = false) {
+  return detail::pinv_out(result, input, rcond, hermitian);
+}
+
+/// Computes the QR decomposition
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.qr
+inline std::tuple<Tensor, Tensor> qr(
+    const Tensor& input,
+    c10::string_view mode = "reduced") {
+  // C++17 Change the initialisation to "reduced"sv
+  //       Same for qr_out
+  return detail::qr(input, mode);
+}
+
+inline std::tuple<Tensor&, Tensor&> qr_out(
+    Tensor& Q,
+    Tensor& R,
+    const Tensor& input,
+    c10::string_view mode = "reduced") {
+  return detail::qr_out(Q, R, input, mode);
+}
+
+/// Computes the LDL decomposition
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.ldl_factor_ex
+inline std::tuple<Tensor, Tensor, Tensor> ldl_factor_ex(
+    const Tensor& input,
+    bool hermitian,
+    bool check_errors) {
+  return torch::linalg_ldl_factor_ex(input, hermitian, check_errors);
+}
+
+inline std::tuple<Tensor&, Tensor&, Tensor&> ldl_factor_ex_out(
+    Tensor& LD,
+    Tensor& pivots,
+    Tensor& info,
+    const Tensor& input,
+    bool hermitian,
+    bool check_errors) {
+  return torch::linalg_ldl_factor_ex_out(
+      LD, pivots, info, input, hermitian, check_errors);
+}
+
+/// Solve a system of linear equations using the LDL decomposition
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.ldl_solve
+inline Tensor ldl_solve(
+    const Tensor& LD,
+    const Tensor& pivots,
+    const Tensor& B,
+    bool hermitian) {
+  return torch::linalg_ldl_solve(LD, pivots, B, hermitian);
+}
+
+inline Tensor& ldl_solve_out(
+    Tensor& result,
+    const Tensor& LD,
+    const Tensor& pivots,
+    const Tensor& B,
+    bool hermitian) {
+  return torch::linalg_ldl_solve_out(result, LD, pivots, B, hermitian);
+}
+
+/// Solves a system linear system AX = B
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.solve_ex
+inline std::tuple<Tensor, Tensor> solve_ex(
+    const Tensor& input,
+    const Tensor& other,
+    bool left,
+    bool check_errors) {
+  return detail::solve_ex(input, other, left, check_errors);
+}
+
+inline std::tuple<Tensor&, Tensor&> solve_ex_out(
+    Tensor& result,
+    Tensor& info,
+    const Tensor& input,
+    const Tensor& other,
+    bool left,
+    bool check_errors) {
+  return detail::solve_ex_out(result, info, input, other, left, check_errors);
+}
+
+/// Computes a tensor `x` such that `matmul(input, x) = other`.
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.solve
+inline Tensor solve(const Tensor& input, const Tensor& other, bool left) {
+  return detail::solve(input, other, left);
+}
+
+inline Tensor& solve_out(
+    Tensor& result,
+    const Tensor& input,
+    const Tensor& other,
+    bool left) {
+  return detail::solve_out(result, input, other, left);
+}
+
+/// Computes a solution of a linear system AX = B for input = A and other = B
+/// whenever A is square upper or lower triangular and does not have zeros in
+/// the diagonal
+///
+/// See
+/// https://pytorch.org/docs/master/linalg.html#torch.linalg.solve_triangular
+inline Tensor solve_triangular(
+    const Tensor& input,
+    const Tensor& other,
+    bool upper,
+    bool left,
+    bool unitriangular) {
+  return detail::solve_triangular(input, other, upper, left, unitriangular);
+}
+
+inline Tensor& solve_triangular_out(
+    Tensor& result,
+    const Tensor& input,
+    const Tensor& other,
+    bool upper,
+    bool left,
+    bool unitriangular) {
+  return detail::solve_triangular_out(
+      result, input, other, upper, left, unitriangular);
+}
+
+/// Computes the singular values and singular vectors
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.svd
+inline std::tuple<Tensor, Tensor, Tensor> svd(
+    const Tensor& input,
+    bool full_matrices,
+    c10::optional<c10::string_view> driver) {
+  return detail::svd(input, full_matrices, driver);
+}
+
+inline std::tuple<Tensor&, Tensor&, Tensor&> svd_out(
+    Tensor& U,
+    Tensor& S,
+    Tensor& Vh,
+    const Tensor& input,
+    bool full_matrices,
+    c10::optional<c10::string_view> driver) {
+  return detail::svd_out(U, S, Vh, input, full_matrices, driver);
+}
+
+/// Computes the singular values
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.svdvals
+inline Tensor svdvals(
+    const Tensor& input,
+    c10::optional<c10::string_view> driver) {
+  return detail::svdvals(input, driver);
+}
+
+inline Tensor& svdvals_out(
+    Tensor& result,
+    const Tensor& input,
+    c10::optional<c10::string_view> driver) {
+  return detail::svdvals_out(result, input, driver);
+}
+
+/// Computes the inverse of a tensor
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.tensorinv
+///
+/// Example:
+/// ```
+/// auto a = torch::eye(4*6).reshape({4, 6, 8, 3});
+/// int64_t ind = 2;
+/// auto ainv = torch::linalg::tensorinv(a, ind);
+/// ```
+inline Tensor tensorinv(const Tensor& self, int64_t ind) {
+  return detail::tensorinv(self, ind);
+}
+
+inline Tensor& tensorinv_out(Tensor& result, const Tensor& self, int64_t ind) {
+  return detail::tensorinv_out(result, self, ind);
+}
+
+/// Computes a tensor `x` such that `tensordot(input, x, dims=x.dim()) = other`.
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.tensorsolve
+///
+/// Example:
+/// ```
+/// auto a = torch::eye(2*3*4).reshape({2*3, 4, 2, 3, 4});
+/// auto b = torch::randn(2*3, 4);
+/// auto x = torch::linalg::tensorsolve(a, b);
+/// ```
+inline Tensor tensorsolve(
+    const Tensor& input,
+    const Tensor& other,
+    OptionalIntArrayRef dims) {
+  return detail::tensorsolve(input, other, dims);
+}
+
+inline Tensor& tensorsolve_out(
+    Tensor& result,
+    const Tensor& input,
+    const Tensor& other,
+    OptionalIntArrayRef dims) {
+  return detail::tensorsolve_out(result, input, other, dims);
+}
+
+/// Computes a tensor `inverse_input` such that `dot(input, inverse_input) =
+/// eye(input.size(0))`.
+///
+/// See https://pytorch.org/docs/master/linalg.html#torch.linalg.inv
+inline Tensor inv(const Tensor& input) {
+  return detail::inv(input);
+}
+
+inline Tensor& inv_out(Tensor& result, const Tensor& input) {
+  return detail::inv_out(result, input);
+}
+
+} // namespace linalg
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/mps.h

@@ -0,0 +1,44 @@
+#pragma once
+
+#include <torch/csrc/Export.h>
+
+#include <cstddef>
+#include <cstdint>
+
+#ifdef __OBJC__
+#include <Foundation/Foundation.h>
+#include <Metal/Metal.h>
+using MTLCommandBuffer_t = id<MTLCommandBuffer>;
+using DispatchQueue_t = dispatch_queue_t;
+#else
+using MTLCommandBuffer_t = void*;
+using DispatchQueue_t = void*;
+#endif
+
+namespace torch {
+namespace mps {
+
+/// Returns true if MPS device is available.
+bool TORCH_API is_available();
+
+/// Sets the RNG seed for the MPS device.
+void TORCH_API manual_seed(uint64_t seed);
+
+/// Waits for all streams on the MPS device to complete.
+/// This blocks the calling CPU thread by using the 'waitUntilCompleted()'
+/// method to wait for Metal command buffers finish executing all the
+/// encoded GPU operations before returning.
+void TORCH_API synchronize();
+
+/// Submits the currently active command buffer to run on the MPS device.
+void TORCH_API commit();
+
+/// Get the current command buffer to encode the Metal commands.
+MTLCommandBuffer_t TORCH_API get_command_buffer();
+
+/// Get the dispatch_queue_t to synchronize encoding the custom kernels
+/// with the PyTorch MPS backend.
+DispatchQueue_t TORCH_API get_dispatch_queue();
+
+} // namespace mps
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/nested.h

@@ -0,0 +1,95 @@
+#pragma once
+
+#include <ATen/ATen.h>
+#include <ATen/core/ATen_fwd.h>
+#include <torch/csrc/api/include/torch/detail/TensorDataContainer.h>
+#include <algorithm>
+
+namespace torch {
+namespace nested {
+
+/// Nested tensor
+///
+/// See
+/// https://pytorch.org/docs/master/nested.html#torch.nested.nested_tensor
+///
+/// ```
+// implemented on python object to allow torch.nested.nested_tensor to be
+// constructed with arbitrarily nested python objects - for now, only arbitrary
+// python lists and lists of Tensors
+// See torch/csrc/autograd/python_nested_functions_manual.cpp for Python
+// implementation
+// See here for C++ implementation
+inline at::Tensor nested_tensor(
+    at::TensorList nested_tensor_data,
+    const at::TensorOptions& options = {}) {
+  auto out = at::_nested_tensor_from_tensor_list(
+      nested_tensor_data,
+      c10::typeMetaToScalarType(options.dtype()),
+      c10::nullopt,
+      options.device(),
+      options.pinned_memory());
+  if (options.has_requires_grad() && options.requires_grad()) {
+    out.requires_grad_(true);
+  }
+  return out;
+}
+
+inline at::Tensor nested_tensor(
+    at::ArrayRef<detail::TensorDataContainer> nested_tensor_data,
+    const at::TensorOptions& options = {}) {
+  for (const auto& tdc : nested_tensor_data) {
+    TORCH_CHECK(
+        tdc.is_init_list(),
+        "nested_tensor() not implemented for these parameters");
+  }
+  // Construct a TensorList using nested_tensor_data
+  std::vector<at::Tensor> tensor_list(nested_tensor_data.size());
+  std::transform(
+      nested_tensor_data.begin(),
+      nested_tensor_data.end(),
+      tensor_list.begin(),
+      [&](const detail::TensorDataContainer& tdc) {
+        return tdc.convert_to_tensor(options);
+      });
+  auto out = at::_nested_tensor_from_tensor_list(
+      tensor_list,
+      c10::typeMetaToScalarType(options.dtype()),
+      c10::nullopt,
+      options.device(),
+      options.pinned_memory());
+  if (options.has_requires_grad() && options.requires_grad()) {
+    out.requires_grad_(true);
+  }
+  return out;
+}
+
+/// As Nested Tensor
+///
+/// See
+/// https://pytorch.org/docs/master/nested.html#torch.nested.as_nested_tensor
+///
+/// ```
+inline at::Tensor as_nested_tensor(
+    at::TensorList list,
+    c10::optional<at::ScalarType> dtype = c10::nullopt,
+    c10::optional<at::Device> device = c10::nullopt) {
+  return at::_nested_tensor_from_tensor_list(
+      list, dtype, c10::nullopt, device, c10::nullopt);
+}
+
+/// Nested to padded tensor
+///
+/// See
+/// https://pytorch.org/docs/master/nested.html#torch.nested.to_padded_tensor
+///
+/// ```
+inline at::Tensor to_padded_tensor(
+    const at::Tensor& self,
+    double padding,
+    at::OptionalIntArrayRef output_size = c10::nullopt) {
+  return at::nested_to_padded_tensor(self, padding, output_size);
+}
+
+} // namespace nested
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/nn.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include <torch/nn/cloneable.h>
+#include <torch/nn/functional.h>
+#include <torch/nn/init.h>
+#include <torch/nn/module.h>
+#include <torch/nn/modules.h>
+#include <torch/nn/options.h>
+#include <torch/nn/pimpl.h>
+#include <torch/nn/utils.h>

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <torch/optim/adagrad.h>
+#include <torch/optim/adam.h>
+#include <torch/optim/adamw.h>
+#include <torch/optim/lbfgs.h>
+#include <torch/optim/optimizer.h>
+#include <torch/optim/rmsprop.h>
+#include <torch/optim/sgd.h>
+
+#include <torch/optim/schedulers/lr_scheduler.h>
+#include <torch/optim/schedulers/step_lr.h>

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/adagrad.h

@@ -0,0 +1,109 @@
+#pragma once
+
+#include <torch/nn/pimpl.h>
+#include <torch/optim/optimizer.h>
+#include <torch/optim/serialize.h>
+#include <torch/serialize/archive.h>
+#include <torch/types.h>
+
+#include <utility>
+#include <vector>
+
+namespace torch {
+namespace serialize {
+class OutputArchive;
+class InputArchive;
+} // namespace serialize
+} // namespace torch
+
+namespace torch {
+namespace optim {
+
+struct TORCH_API AdagradOptions
+    : public OptimizerCloneableOptions<AdagradOptions> {
+  AdagradOptions(double lr = 1e-2);
+  TORCH_ARG(double, lr) = 1e-2;
+  TORCH_ARG(double, lr_decay) = 0;
+  TORCH_ARG(double, weight_decay) = 0;
+  TORCH_ARG(double, initial_accumulator_value) = 0;
+  TORCH_ARG(double, eps) = 1e-10;
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const AdagradOptions& lhs,
+      const AdagradOptions& rhs);
+  double get_lr() const override;
+  void set_lr(const double lr) override;
+};
+
+struct TORCH_API AdagradParamState
+    : public OptimizerCloneableParamState<AdagradParamState> {
+  TORCH_ARG(torch::Tensor, sum);
+  TORCH_ARG(int64_t, step) = 0;
+
+ public:
+  AdagradParamState() = default;
+  AdagradParamState(const AdagradParamState&) = default;
+  AdagradParamState& operator=(const AdagradParamState&) = default;
+  AdagradParamState(AdagradParamState&&) noexcept = default;
+  AdagradParamState& operator=(AdagradParamState&&) noexcept = default;
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const AdagradParamState& lhs,
+      const AdagradParamState& rhs);
+};
+
+class TORCH_API Adagrad : public Optimizer {
+ public:
+  explicit Adagrad(
+      std::vector<OptimizerParamGroup> param_groups,
+      AdagradOptions defaults = {})
+      : Optimizer(
+            std::move(param_groups),
+            std::make_unique<AdagradOptions>(defaults)) {
+    TORCH_CHECK(defaults.lr() >= 0, "Invalid learning rate: ", defaults.lr());
+    TORCH_CHECK(
+        defaults.lr_decay() >= 0,
+        "Invalid lr_decay value: ",
+        defaults.lr_decay());
+    TORCH_CHECK(
+        defaults.weight_decay() >= 0,
+        "Invalid weight_decay value: ",
+        defaults.weight_decay());
+    TORCH_CHECK(
+        defaults.initial_accumulator_value() >= 0,
+        "Invalid initial_accumulator_value value: ",
+        defaults.initial_accumulator_value());
+    TORCH_CHECK(defaults.eps() >= 0, "Invalid epsilon value: ", defaults.eps());
+
+    for (const auto& group : param_groups_) {
+      for (const auto& p : group.params()) {
+        auto state = std::make_unique<AdagradParamState>();
+        state->step(0);
+        state->sum(torch::full_like(
+            p.data(),
+            defaults.initial_accumulator_value(),
+            at::MemoryFormat::Preserve));
+        state_[p.unsafeGetTensorImpl()] = std::move(state);
+      }
+    }
+  }
+
+  explicit Adagrad(std::vector<Tensor> params, AdagradOptions defaults = {})
+      : Adagrad({OptimizerParamGroup(std::move(params))}, defaults) {}
+
+  torch::Tensor step(LossClosure closure = nullptr) override;
+  void save(serialize::OutputArchive& archive) const override;
+  void load(serialize::InputArchive& archive) override;
+
+ private:
+  template <typename Self, typename Archive>
+  static void serialize(Self& self, Archive& archive) {
+    _TORCH_OPTIM_SERIALIZE_WITH_TEMPLATE_ARG(Adagrad);
+  }
+};
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/adam.h

@@ -0,0 +1,92 @@
+#pragma once
+
+#include <torch/nn/module.h>
+#include <torch/optim/optimizer.h>
+#include <torch/optim/serialize.h>
+
+#include <utility>
+#include <vector>
+
+namespace torch {
+namespace serialize {
+class OutputArchive;
+class InputArchive;
+} // namespace serialize
+} // namespace torch
+
+namespace torch {
+namespace optim {
+
+struct TORCH_API AdamOptions : public OptimizerCloneableOptions<AdamOptions> {
+  AdamOptions(double lr = 1e-3);
+  TORCH_ARG(double, lr) = 1e-3;
+  typedef std::tuple<double, double> betas_t;
+  TORCH_ARG(betas_t, betas) = std::make_tuple(0.9, 0.999);
+  TORCH_ARG(double, eps) = 1e-8;
+  TORCH_ARG(double, weight_decay) = 0;
+  TORCH_ARG(bool, amsgrad) = false;
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const AdamOptions& lhs,
+      const AdamOptions& rhs);
+  double get_lr() const override;
+  void set_lr(const double lr) override;
+};
+
+struct TORCH_API AdamParamState
+    : public OptimizerCloneableParamState<AdamParamState> {
+  TORCH_ARG(int64_t, step) = 0;
+  TORCH_ARG(torch::Tensor, exp_avg);
+  TORCH_ARG(torch::Tensor, exp_avg_sq);
+  TORCH_ARG(torch::Tensor, max_exp_avg_sq) = {};
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const AdamParamState& lhs,
+      const AdamParamState& rhs);
+};
+
+class TORCH_API Adam : public Optimizer {
+ public:
+  explicit Adam(
+      std::vector<OptimizerParamGroup> param_groups,
+      AdamOptions defaults = {})
+      : Optimizer(
+            std::move(param_groups),
+            std::make_unique<AdamOptions>(defaults)) {
+    TORCH_CHECK(defaults.lr() >= 0, "Invalid learning rate: ", defaults.lr());
+    TORCH_CHECK(defaults.eps() >= 0, "Invalid epsilon value: ", defaults.eps());
+    auto betas = defaults.betas();
+    TORCH_CHECK(
+        0 <= std::get<0>(betas) && std::get<0>(betas) < 1.0,
+        "Invalid beta parameter at index 0: ",
+        std::get<0>(betas));
+    TORCH_CHECK(
+        0 <= std::get<1>(betas) && std::get<1>(betas) < 1.0,
+        "Invalid beta parameter at index 1: ",
+        std::get<1>(betas));
+    TORCH_CHECK(
+        defaults.weight_decay() >= 0,
+        "Invalid weight_decay value: ",
+        defaults.weight_decay());
+  }
+  explicit Adam(std::vector<Tensor> params, AdamOptions defaults = {})
+      : Adam({OptimizerParamGroup(std::move(params))}, defaults) {}
+
+  torch::Tensor step(LossClosure closure = nullptr) override;
+  void save(serialize::OutputArchive& archive) const override;
+  void load(serialize::InputArchive& archive) override;
+
+ private:
+  template <typename Self, typename Archive>
+  static void serialize(Self& self, Archive& archive) {
+    _TORCH_OPTIM_SERIALIZE_WITH_TEMPLATE_ARG(Adam);
+  }
+};
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/adamw.h

@@ -0,0 +1,92 @@
+#pragma once
+
+#include <torch/nn/module.h>
+#include <torch/optim/optimizer.h>
+#include <torch/optim/serialize.h>
+
+#include <utility>
+#include <vector>
+
+namespace torch {
+namespace serialize {
+class OutputArchive;
+class InputArchive;
+} // namespace serialize
+} // namespace torch
+
+namespace torch {
+namespace optim {
+
+struct TORCH_API AdamWOptions : public OptimizerCloneableOptions<AdamWOptions> {
+  AdamWOptions(double lr = 1e-3);
+  TORCH_ARG(double, lr) = 1e-3;
+  typedef std::tuple<double, double> betas_t;
+  TORCH_ARG(betas_t, betas) = std::make_tuple(0.9, 0.999);
+  TORCH_ARG(double, eps) = 1e-8;
+  TORCH_ARG(double, weight_decay) = 1e-2;
+  TORCH_ARG(bool, amsgrad) = false;
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const AdamWOptions& lhs,
+      const AdamWOptions& rhs);
+  double get_lr() const override;
+  void set_lr(const double lr) override;
+};
+
+struct TORCH_API AdamWParamState
+    : public OptimizerCloneableParamState<AdamWParamState> {
+  TORCH_ARG(int64_t, step) = 0;
+  TORCH_ARG(torch::Tensor, exp_avg);
+  TORCH_ARG(torch::Tensor, exp_avg_sq);
+  TORCH_ARG(torch::Tensor, max_exp_avg_sq) = {};
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const AdamWParamState& lhs,
+      const AdamWParamState& rhs);
+};
+
+class TORCH_API AdamW : public Optimizer {
+ public:
+  explicit AdamW(
+      std::vector<OptimizerParamGroup> param_groups,
+      AdamWOptions defaults = {})
+      : Optimizer(
+            std::move(param_groups),
+            std::make_unique<AdamWOptions>(defaults)) {
+    TORCH_CHECK(defaults.lr() >= 0, "Invalid learning rate: ", defaults.lr());
+    TORCH_CHECK(defaults.eps() >= 0, "Invalid epsilon value: ", defaults.eps());
+    auto betas = defaults.betas();
+    TORCH_CHECK(
+        0 <= std::get<0>(betas) && std::get<0>(betas) < 1.0,
+        "Invalid beta parameter at index 0: ",
+        std::get<0>(betas));
+    TORCH_CHECK(
+        0 <= std::get<1>(betas) && std::get<1>(betas) < 1.0,
+        "Invalid beta parameter at index 1: ",
+        std::get<1>(betas));
+    TORCH_CHECK(
+        defaults.weight_decay() >= 0,
+        "Invalid weight_decay value: ",
+        defaults.weight_decay());
+  }
+  explicit AdamW(std::vector<Tensor> params, AdamWOptions defaults = {})
+      : AdamW({OptimizerParamGroup(std::move(params))}, defaults) {}
+
+  torch::Tensor step(LossClosure closure = nullptr) override;
+  void save(serialize::OutputArchive& archive) const override;
+  void load(serialize::InputArchive& archive) override;
+
+ private:
+  template <typename Self, typename Archive>
+  static void serialize(Self& self, Archive& archive) {
+    _TORCH_OPTIM_SERIALIZE_WITH_TEMPLATE_ARG(AdamW);
+  }
+};
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/lbfgs.h

@@ -0,0 +1,103 @@
+#pragma once
+
+#include <torch/nn/module.h>
+#include <torch/optim/optimizer.h>
+#include <torch/optim/serialize.h>
+#include <torch/serialize/archive.h>
+
+#include <deque>
+#include <functional>
+#include <memory>
+#include <vector>
+
+namespace torch {
+namespace optim {
+
+struct TORCH_API LBFGSOptions : public OptimizerCloneableOptions<LBFGSOptions> {
+  LBFGSOptions(double lr = 1);
+  TORCH_ARG(double, lr) = 1;
+  TORCH_ARG(int64_t, max_iter) = 20;
+  TORCH_ARG(c10::optional<int64_t>, max_eval) = c10::nullopt;
+  TORCH_ARG(double, tolerance_grad) = 1e-7;
+  TORCH_ARG(double, tolerance_change) = 1e-9;
+  TORCH_ARG(int64_t, history_size) = 100;
+  TORCH_ARG(c10::optional<std::string>, line_search_fn) = c10::nullopt;
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const LBFGSOptions& lhs,
+      const LBFGSOptions& rhs);
+  double get_lr() const override;
+  void set_lr(const double lr) override;
+};
+
+struct TORCH_API LBFGSParamState
+    : public OptimizerCloneableParamState<LBFGSParamState> {
+  TORCH_ARG(int64_t, func_evals) = 0;
+  TORCH_ARG(int64_t, n_iter) = 0;
+  TORCH_ARG(double, t) = 0;
+  TORCH_ARG(double, prev_loss) = 0;
+  TORCH_ARG(Tensor, d) = {};
+  TORCH_ARG(Tensor, H_diag) = {};
+  TORCH_ARG(Tensor, prev_flat_grad) = {};
+  TORCH_ARG(std::deque<Tensor>, old_dirs);
+  TORCH_ARG(std::deque<Tensor>, old_stps);
+  TORCH_ARG(std::deque<Tensor>, ro);
+  TORCH_ARG(c10::optional<std::vector<Tensor>>, al) = c10::nullopt;
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const LBFGSParamState& lhs,
+      const LBFGSParamState& rhs);
+};
+
+class TORCH_API LBFGS : public Optimizer {
+ public:
+  explicit LBFGS(
+      std::vector<OptimizerParamGroup> param_groups,
+      LBFGSOptions defaults = {})
+      : Optimizer(
+            std::move(param_groups),
+            std::make_unique<LBFGSOptions>(defaults)) {
+    TORCH_CHECK(
+        param_groups_.size() == 1,
+        "LBFGS doesn't support per-parameter options (parameter groups)");
+    if (defaults.max_eval() == c10::nullopt) {
+      auto max_eval_val = (defaults.max_iter() * 5) / 4;
+      static_cast<LBFGSOptions&>(param_groups_[0].options())
+          .max_eval(max_eval_val);
+      static_cast<LBFGSOptions&>(*defaults_.get()).max_eval(max_eval_val);
+    }
+    _numel_cache = c10::nullopt;
+  }
+  explicit LBFGS(std::vector<Tensor> params, LBFGSOptions defaults = {})
+      : LBFGS({OptimizerParamGroup(std::move(params))}, defaults) {}
+
+  Tensor step(LossClosure closure) override;
+  void save(serialize::OutputArchive& archive) const override;
+  void load(serialize::InputArchive& archive) override;
+
+ private:
+  c10::optional<int64_t> _numel_cache;
+  int64_t _numel();
+  Tensor _gather_flat_grad();
+  void _add_grad(const double step_size, const Tensor& update);
+  std::tuple<double, Tensor> _directional_evaluate(
+      const LossClosure& closure,
+      const std::vector<Tensor>& x,
+      double t,
+      const Tensor& d);
+  void _set_param(const std::vector<Tensor>& params_data);
+  std::vector<Tensor> _clone_param();
+
+  template <typename Self, typename Archive>
+  static void serialize(Self& self, Archive& archive) {
+    _TORCH_OPTIM_SERIALIZE_WITH_TEMPLATE_ARG(LBFGS);
+  }
+};
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/optimizer.h

@@ -0,0 +1,217 @@
+#pragma once
+
+#include <ATen/Tensor.h>
+#include <c10/util/Exception.h>
+#include <c10/util/flat_hash_map.h>
+
+#include <torch/arg.h>
+#include <torch/csrc/Export.h>
+
+#include <algorithm>
+#include <functional>
+#include <iterator>
+#include <memory>
+#include <string>
+#include <vector>
+
+// Forward declarations confuse Doxygen
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+namespace at {
+class Tensor;
+} // namespace at
+
+namespace torch {
+using at::Tensor;
+namespace serialize {
+class OutputArchive;
+class InputArchive;
+} // namespace serialize
+} // namespace torch
+#endif // DOXYGEN_SHOULD_SKIP_THIS
+
+namespace torch {
+namespace optim {
+
+class TORCH_API OptimizerParamState {
+ public:
+  OptimizerParamState() = default;
+  OptimizerParamState(const OptimizerParamState&) = default;
+  OptimizerParamState& operator=(const OptimizerParamState&) = default;
+  OptimizerParamState(OptimizerParamState&&) noexcept = default;
+  OptimizerParamState& operator=(OptimizerParamState&&) noexcept = default;
+  virtual std::unique_ptr<OptimizerParamState> clone() const;
+  virtual void serialize(torch::serialize::InputArchive& archive);
+  virtual void serialize(torch::serialize::OutputArchive& archive) const;
+  virtual ~OptimizerParamState() = default;
+};
+
+template <typename Derived>
+class OptimizerCloneableParamState : public OptimizerParamState {
+  std::unique_ptr<OptimizerParamState> clone() const override {
+    return std::make_unique<Derived>(static_cast<const Derived&>(*this));
+  }
+};
+
+class TORCH_API OptimizerOptions {
+ public:
+  OptimizerOptions() = default;
+  OptimizerOptions(const OptimizerOptions&) = default;
+  OptimizerOptions& operator=(const OptimizerOptions&) = default;
+  OptimizerOptions(OptimizerOptions&&) noexcept = default;
+  OptimizerOptions& operator=(OptimizerOptions&&) noexcept = default;
+  virtual std::unique_ptr<OptimizerOptions> clone() const;
+  virtual void serialize(torch::serialize::InputArchive& archive);
+  virtual void serialize(torch::serialize::OutputArchive& archive) const;
+  virtual ~OptimizerOptions() = default;
+  virtual double get_lr() const;
+  virtual void set_lr(const double lr);
+};
+
+template <typename Derived>
+class OptimizerCloneableOptions : public OptimizerOptions {
+ private:
+  std::unique_ptr<OptimizerOptions> clone() const override {
+    return std::make_unique<Derived>(static_cast<const Derived&>(*this));
+  }
+};
+
+/// Stores parameters in the param_group and stores a pointer to the
+/// OptimizerOptions
+class TORCH_API OptimizerParamGroup {
+ public:
+  // NOTE: In order to store `OptimizerParamGroup` in a `std::vector`, it has to
+  // be copy-constructible.
+  OptimizerParamGroup(const OptimizerParamGroup& param_group)
+      : params_(param_group.params()),
+        options_(
+            param_group.has_options() ? param_group.options().clone()
+                                      : nullptr) {}
+  OptimizerParamGroup(std::vector<Tensor> params)
+      : params_(std::move(params)) {}
+  OptimizerParamGroup(
+      std::vector<Tensor> params,
+      std::unique_ptr<OptimizerOptions> options)
+      : params_(std::move(params)), options_(std::move(options)) {}
+
+  bool has_options() const;
+  OptimizerOptions& options();
+  const OptimizerOptions& options() const;
+  void set_options(std::unique_ptr<OptimizerOptions> options);
+  std::vector<Tensor>& params();
+  const std::vector<Tensor>& params() const;
+
+ protected:
+  std::vector<Tensor> params_;
+  std::unique_ptr<OptimizerOptions> options_;
+};
+
+class TORCH_API Optimizer {
+ public:
+  // The copy constructor is deleted, because the user should use the
+  // `state_dict` / `load_state_dict` API to copy an optimizer instead.
+  Optimizer(const Optimizer& optimizer) = delete;
+  Optimizer(Optimizer&& optimizer) = default;
+
+  explicit Optimizer(
+      std::vector<OptimizerParamGroup> param_groups,
+      std::unique_ptr<OptimizerOptions> defaults)
+      : defaults_(std::move(defaults)) {
+    for (const auto& param_group : param_groups) {
+      add_param_group(param_group);
+    }
+  }
+
+  /// Constructs the `Optimizer` from a vector of parameters.
+  explicit Optimizer(
+      std::vector<Tensor> parameters,
+      std::unique_ptr<OptimizerOptions> defaults)
+      : Optimizer(
+            {OptimizerParamGroup(std::move(parameters))},
+            std::move(defaults)){};
+
+  /// Adds the given param_group to the optimizer's param_group list.
+  void add_param_group(const OptimizerParamGroup& param_group);
+
+  virtual ~Optimizer() = default;
+
+  using LossClosure = std::function<Tensor()>;
+  /// A loss function closure, which is expected to return the loss value.
+  virtual Tensor step(LossClosure closure = nullptr) = 0;
+
+  /// Adds the given vector of parameters to the optimizer's parameter list.
+  void add_parameters(const std::vector<Tensor>& parameters);
+
+  /// Zeros out the gradients of all parameters.
+  void zero_grad(bool set_to_none = true);
+
+  /// Provides a const reference to the parameters in the first param_group this
+  /// optimizer holds.
+  const std::vector<Tensor>& parameters() const noexcept;
+
+  /// Provides a reference to the parameters in the first param_group this
+  /// optimizer holds.
+  std::vector<Tensor>& parameters() noexcept;
+
+  /// Returns the number of parameters referenced by the optimizer.
+  size_t size() const noexcept;
+
+  OptimizerOptions& defaults() noexcept;
+
+  const OptimizerOptions& defaults() const noexcept;
+
+  /// Provides a reference to the param_groups this optimizer holds.
+  std::vector<OptimizerParamGroup>& param_groups() noexcept;
+
+  /// Provides a const reference to the param_groups this optimizer holds.
+  const std::vector<OptimizerParamGroup>& param_groups() const noexcept;
+
+  /// Provides a reference to the state this optimizer holds
+  ska::flat_hash_map<void*, std::unique_ptr<OptimizerParamState>>&
+  state() noexcept;
+
+  /// Provides a const reference to the state this optimizer holds
+  const ska::flat_hash_map<void*, std::unique_ptr<OptimizerParamState>>& state()
+      const noexcept;
+
+  /// Serializes the optimizer state into the given `archive`.
+  virtual void save(serialize::OutputArchive& archive) const;
+
+  /// Deserializes the optimizer state from the given `archive`.
+  virtual void load(serialize::InputArchive& archive);
+
+ protected:
+  std::vector<OptimizerParamGroup> param_groups_;
+  ska::flat_hash_map<void*, std::unique_ptr<OptimizerParamState>> state_;
+  std::unique_ptr<OptimizerOptions> defaults_;
+};
+
+/* How do we decide whether to serialize undefined tensors or
+  c10::nullopt values into the output archive?
+Answer: we strictly follow the behavior of Python API. To be more specific:
+
+For optimizer options:
+a) For undefined tensor: currently no tensor is used as an options argument in
+Python API, so we don't need to worry about it now. b) For c10::nullopt value:
+we serialize c10::nullopt values into the output archive, to follow the exact
+same behavior as Python API.
+
+For optimizer param state:
+a) For undefined tensor: in param state, undefined tensor in C++ impl is
+equivalent to missing key in Python impl. Since we don't serialize missing keys
+in Python API, we skip undefined tensors when serializing the param state. b)
+For c10::nullopt value: in param state, c10::nullopt value in C++ impl is
+equivalent to missing key in Python impl. Since we don't serialize missing keys
+in Python API, we skip c10::nullopt values when serializing the param state. */
+
+/// Serializes an `Optimizer` into an `OutputArchive`.
+TORCH_API serialize::OutputArchive& operator<<(
+    serialize::OutputArchive& archive,
+    const Optimizer& optimizer);
+
+/// Deserializes a `Tensor` from an `InputArchive`.
+TORCH_API serialize::InputArchive& operator>>(
+    serialize::InputArchive& archive,
+    Optimizer& optimizer);
+
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/rmsprop.h

@@ -0,0 +1,95 @@
+#pragma once
+
+#include <torch/nn/module.h>
+#include <torch/optim/optimizer.h>
+#include <torch/optim/serialize.h>
+#include <torch/serialize/archive.h>
+#include <torch/types.h>
+
+#include <functional>
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace torch {
+namespace serialize {
+class OutputArchive;
+class InputArchive;
+} // namespace serialize
+} // namespace torch
+
+namespace torch {
+namespace optim {
+
+struct TORCH_API RMSpropOptions
+    : public OptimizerCloneableOptions<RMSpropOptions> {
+  RMSpropOptions(double lr = 1e-2);
+  TORCH_ARG(double, lr) = 1e-2;
+  TORCH_ARG(double, alpha) = 0.99;
+  TORCH_ARG(double, eps) = 1e-8;
+  TORCH_ARG(double, weight_decay) = 0;
+  TORCH_ARG(double, momentum) = 0;
+  TORCH_ARG(bool, centered) = false;
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const RMSpropOptions& lhs,
+      const RMSpropOptions& rhs);
+  double get_lr() const override;
+  void set_lr(const double lr) override;
+};
+
+struct TORCH_API RMSpropParamState
+    : public OptimizerCloneableParamState<RMSpropParamState> {
+  TORCH_ARG(int64_t, step) = 0;
+  TORCH_ARG(torch::Tensor, square_avg);
+  TORCH_ARG(torch::Tensor, momentum_buffer) = {};
+  TORCH_ARG(torch::Tensor, grad_avg) = {};
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const RMSpropParamState& lhs,
+      const RMSpropParamState& rhs);
+};
+
+class TORCH_API RMSprop : public Optimizer {
+ public:
+  explicit RMSprop(
+      std::vector<OptimizerParamGroup> param_groups,
+      RMSpropOptions defaults = {})
+      : Optimizer(
+            std::move(param_groups),
+            std::make_unique<RMSpropOptions>(defaults)) {
+    TORCH_CHECK(defaults.lr() >= 0, "Invalid learning rate: ", defaults.lr());
+    TORCH_CHECK(defaults.eps() >= 0, "Invalid epsilon value: ", defaults.eps());
+    TORCH_CHECK(
+        defaults.momentum() >= 0,
+        "Invalid momentum value: ",
+        defaults.momentum());
+    TORCH_CHECK(
+        defaults.weight_decay() >= 0,
+        "Invalid weight_decay value: ",
+        defaults.weight_decay());
+    TORCH_CHECK(
+        defaults.alpha() >= 0, "Invalid alpha value: ", defaults.alpha());
+  }
+
+  explicit RMSprop(std::vector<Tensor> params, RMSpropOptions defaults = {})
+      : RMSprop({OptimizerParamGroup(std::move(params))}, defaults) {}
+
+  torch::Tensor step(LossClosure closure = nullptr) override;
+  void save(serialize::OutputArchive& archive) const override;
+  void load(serialize::InputArchive& archive) override;
+
+ private:
+  template <typename Self, typename Archive>
+  static void serialize(Self& self, Archive& archive) {
+    _TORCH_OPTIM_SERIALIZE_WITH_TEMPLATE_ARG(RMSprop);
+  }
+};
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/schedulers/lr_scheduler.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include <torch/optim/optimizer.h>
+
+#include <torch/csrc/Export.h>
+
+namespace torch {
+namespace optim {
+
+class TORCH_API LRScheduler {
+ public:
+  // This class needs to take a reference of an optimizer from outside such that
+  // it can modify its learning rates; due to this the lifetime of said
+  // optimizer must be maintained
+  LRScheduler(torch::optim::Optimizer& optimizer);
+
+  virtual ~LRScheduler() = default;
+
+  void step();
+
+ protected:
+  // A vector of learning rates is calculated and returned from the specific
+  // subclass. A vector is returned with each element being a separate learning
+  // rate for each param group - although the normal use case would be to return
+  // a vector of identical elements.
+  virtual std::vector<double> get_lrs() = 0;
+
+  // Get current learning rates from the optimizer
+  std::vector<double> get_current_lrs() const;
+
+  unsigned step_count_{};
+
+ private:
+  void set_optimizer_lrs(const std::vector<double>& learning_rates);
+
+  torch::optim::Optimizer& optimizer_;
+};
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/schedulers/reduce_on_plateau_scheduler.h

@@ -0,0 +1,63 @@
+#pragma once
+
+#include <torch/optim/optimizer.h>
+
+#include <torch/csrc/Export.h>
+
+#include <string>
+
+#include <cmath>
+
+#include <iostream>
+
+namespace torch {
+namespace optim {
+
+class TORCH_API ReduceLROnPlateauScheduler {
+ public:
+  enum SchedulerMode { min, max };
+  enum ThresholdMode { rel, abs };
+  ReduceLROnPlateauScheduler(
+      Optimizer& optimizer,
+      SchedulerMode mode = min,
+      float factor = 0.1,
+      int patience = 10,
+      double threshold = 1e-4,
+      ThresholdMode threshold_mode = rel,
+      int cooldown = 0,
+      const std::vector<float>& min_lr = std::vector<float>(),
+      double eps = 1e-8,
+      bool verbose = false);
+
+  virtual ~ReduceLROnPlateauScheduler() = default;
+
+  void step(float metric);
+
+ private:
+  void reset();
+  void reduce_lr(int epoch);
+  bool in_cooldown();
+  bool is_better(float a);
+  void init_is_better(
+      SchedulerMode mode,
+      double threshold,
+      ThresholdMode threshold_mode);
+
+  Optimizer& optimizer;
+  SchedulerMode mode;
+  float mode_worse;
+  float factor;
+  int patience;
+  double threshold;
+  ThresholdMode threshold_mode;
+  int cooldown;
+  int cooldown_counter;
+  std::vector<float> min_lrs;
+  double eps;
+  float best;
+  bool verbose;
+  int last_epoch;
+  int num_bad_epochs;
+};
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/schedulers/step_lr.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <torch/optim/schedulers/lr_scheduler.h>
+
+namespace torch {
+namespace optim {
+
+class TORCH_API StepLR : public LRScheduler {
+ public:
+  StepLR(
+      torch::optim::Optimizer& optimizer,
+      const unsigned step_size,
+      const double gamma = 0.1);
+
+ private:
+  std::vector<double> get_lrs() override;
+
+  const unsigned step_size_;
+  const double gamma_;
+};
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/serialize.h

@@ -0,0 +1,309 @@
+#pragma once
+
+#include <c10/util/irange.h>
+#include <torch/optim/optimizer.h>
+#include <torch/serialize/archive.h>
+#include <torch/types.h>
+#include <cstddef>
+#include <cstdint>
+#include <deque>
+#include <string>
+#include <vector>
+
+namespace torch {
+namespace optim {
+namespace detail {
+// Utility function to save state
+template <typename DerivedOptimizerParamState>
+void serialize(
+    serialize::OutputArchive& archive,
+    const ska::flat_hash_map<void*, std::unique_ptr<OptimizerParamState>>&
+        state) {
+  for (const auto& item : state) {
+    serialize::OutputArchive param_state_archive(archive.compilation_unit());
+    std::string tensorimpl_key =
+        std::to_string(reinterpret_cast<size_t>(item.first));
+    const DerivedOptimizerParamState& curr_state =
+        static_cast<const DerivedOptimizerParamState&>(*(item.second.get()));
+    curr_state.serialize(param_state_archive);
+    archive.write(tensorimpl_key, param_state_archive);
+  }
+}
+
+// Utility function to load state
+template <typename DerivedOptimizerParamState>
+void serialize(
+    serialize::InputArchive& archive,
+    ska::flat_hash_map<void*, std::unique_ptr<OptimizerParamState>>& state) {
+  std::vector<std::string> tensorimpl_keys = archive.keys();
+  for (const std::string& tensorimpl_key : tensorimpl_keys) {
+    serialize::InputArchive param_state_archive;
+    archive.read(tensorimpl_key, param_state_archive);
+    DerivedOptimizerParamState param_state;
+    param_state.serialize(param_state_archive);
+    state[reinterpret_cast<void*>(std::stoull(tensorimpl_key))] =
+        std::make_unique<DerivedOptimizerParamState>(param_state);
+  }
+}
+
+// Utility function to save param_groups
+template <typename DerivedOptimizerParamOptions>
+void serialize(
+    serialize::OutputArchive& archive,
+    const std::vector<OptimizerParamGroup>& param_groups) {
+  archive.write(
+      "param_groups/size",
+      torch::tensor(static_cast<int64_t>(param_groups.size())));
+  for (const auto i : c10::irange(param_groups.size())) {
+    serialize::OutputArchive param_group_archive(archive.compilation_unit());
+    std::vector<Tensor> params = param_groups[i].params();
+    param_group_archive.write(
+        "params/size", torch::tensor(static_cast<int64_t>(params.size())));
+    for (const auto index : c10::irange(params.size())) {
+      param_group_archive.write(
+          "params/" + std::to_string(index),
+          IValue(std::to_string(
+              reinterpret_cast<size_t>(params[index].unsafeGetTensorImpl()))));
+    }
+    const DerivedOptimizerParamOptions& param_group_options =
+        static_cast<const DerivedOptimizerParamOptions&>(
+            param_groups[i].options());
+    serialize::OutputArchive param_group_options_archive(
+        param_group_archive.compilation_unit());
+    param_group_options.serialize(param_group_options_archive);
+    param_group_archive.write("options", param_group_options_archive);
+    archive.write("param_groups/" + std::to_string(i), param_group_archive);
+  }
+}
+
+// Utility function to load param_groups
+// We take as input vector of pair of string and unique_ptr to optimizer options
+// so that we can retain the state for each param by using the old tensor impl
+// keys (saved during serialization) and map the new tensor impl keys to the
+// correct state for each param
+template <typename DerivedOptimizerParamOptions>
+void serialize(
+    serialize::InputArchive& archive,
+    std::vector<
+        std::pair<std::vector<std::string>, std::unique_ptr<OptimizerOptions>>>&
+        param_groups) {
+  torch::Tensor param_groups_size_tensor;
+  archive.read("param_groups/size", param_groups_size_tensor);
+  const int64_t param_groups_size = param_groups_size_tensor.item<int64_t>();
+  for (const auto i : c10::irange(param_groups_size)) {
+    serialize::InputArchive param_group_archive;
+    archive.read("param_groups/" + std::to_string(i), param_group_archive);
+    torch::Tensor size_tensor;
+    param_group_archive.read("params/size", size_tensor);
+    const int64_t size = size_tensor.item<int64_t>();
+    std::vector<std::string> params;
+    for (const auto index : c10::irange(size)) {
+      IValue ivalue;
+      param_group_archive.read("params/" + std::to_string(index), ivalue);
+      std::string element = ivalue.toStringRef();
+      params.emplace_back(element);
+    }
+    serialize::InputArchive param_group_options_archive;
+    param_group_archive.read("options", param_group_options_archive);
+    DerivedOptimizerParamOptions param_group_options(0);
+    param_group_options.serialize(param_group_options_archive);
+    param_groups.emplace_back(std::make_pair(
+        params,
+        std::make_unique<DerivedOptimizerParamOptions>(param_group_options)));
+  }
+}
+} // namespace detail
+
+// Note: These functions are all called `serialize()` so they can be called
+// inside a template where the archive type is a template type and can thus be
+// passed such that the appropriate overload is selected.
+
+/// Utility function to save a value of `int64_t` type.
+void serialize(
+    serialize::OutputArchive& archive,
+    const std::string& key,
+    const int64_t& value);
+
+/// Utility function to load a value of `int64_t` type.
+void serialize(
+    serialize::InputArchive& archive,
+    const std::string& key,
+    int64_t& value);
+
+/// Utility function to save a vector of step buffers.
+void serialize(
+    serialize::OutputArchive& archive,
+    const std::string& key,
+    const std::vector<int64_t>& steps);
+
+/// Utility function to load a vector of step buffers.
+void serialize(
+    serialize::InputArchive& archive,
+    const std::string& key,
+    std::vector<int64_t>& steps);
+
+// Utility function to save state and param_groups
+template <
+    typename DerivedOptimizerParamState,
+    typename DerivedOptimizerParamOptions>
+void serialize(serialize::OutputArchive& archive, const Optimizer& optimizer) {
+  archive.write("pytorch_version", IValue("1.5.0"));
+  serialize::OutputArchive state_archive(archive.compilation_unit());
+  detail::serialize<DerivedOptimizerParamState>(
+      state_archive, optimizer.state());
+  archive.write("state", state_archive);
+
+  serialize::OutputArchive param_groups_archive(archive.compilation_unit());
+  detail::serialize<DerivedOptimizerParamOptions>(
+      param_groups_archive, optimizer.param_groups());
+  archive.write("param_groups", param_groups_archive);
+}
+
+// Utility function to load state and param_groups and update state
+template <
+    typename DerivedOptimizerParamState,
+    typename DerivedOptimizerParamOptions>
+void serialize(serialize::InputArchive& archive, Optimizer& optimizer) {
+  IValue pytorch_version;
+  archive.read("pytorch_version", pytorch_version);
+  TORCH_INTERNAL_ASSERT(pytorch_version.toStringRef() == "1.5.0");
+  serialize::InputArchive state_archive;
+  archive.read("state", state_archive);
+  ska::flat_hash_map<void*, std::unique_ptr<OptimizerParamState>> saved_state;
+  detail::serialize<DerivedOptimizerParamState>(state_archive, saved_state);
+
+  serialize::InputArchive param_groups_archive;
+  archive.read("param_groups", param_groups_archive);
+  std::vector<
+      std::pair<std::vector<std::string>, std::unique_ptr<OptimizerOptions>>>
+      saved_param_groups;
+  detail::serialize<DerivedOptimizerParamOptions>(
+      param_groups_archive, saved_param_groups);
+
+  // update state
+  TORCH_CHECK(
+      saved_param_groups.size() == optimizer.param_groups().size(),
+      "loaded state dict has a different number of parameter groups");
+  for (const auto i : c10::irange(saved_param_groups.size())) {
+    std::vector<std::string> param_group_old_keys = saved_param_groups[i].first;
+    std::vector<Tensor> params = optimizer.param_groups()[i].params();
+    TORCH_CHECK(
+        param_group_old_keys.size() == params.size(),
+        "loaded state dict contains a parameter group that has a different size than the optimizer's parameter group");
+
+    for (const auto idx : c10::irange(params.size())) {
+      auto param_group_old_key =
+          reinterpret_cast<void*>(std::stoull(param_group_old_keys[idx]));
+      if (saved_state.find(param_group_old_key) != saved_state.end()) {
+        optimizer.state()[params[idx].unsafeGetTensorImpl()] =
+            std::move(saved_state[param_group_old_key]);
+      }
+    }
+  }
+}
+
+/// Utility function to save a vector of buffers.
+template <typename BufferContainer>
+void serialize(
+    serialize::OutputArchive& archive,
+    const std::string& key,
+    const BufferContainer& buffers) {
+  archive.write(
+      key + "/size", torch::tensor(static_cast<int64_t>(buffers.size())));
+  for (const auto index : c10::irange(buffers.size())) {
+    archive.write(
+        key + "/" + std::to_string(index), buffers[index], /*is_buffer=*/true);
+  }
+}
+
+/// Utility function to load a vector of buffers.
+template <typename BufferContainer>
+void serialize(
+    serialize::InputArchive& archive,
+    const std::string& key,
+    BufferContainer& buffers) {
+  buffers.clear();
+  torch::Tensor size_tensor;
+  archive.read(key + "/size", size_tensor);
+  const size_t size = size_tensor.item<int64_t>();
+  for (const auto index : c10::irange(size)) {
+    buffers.emplace_back();
+    archive.read(
+        key + "/" + std::to_string(index), buffers.back(), /*is_buffer=*/true);
+  }
+}
+
+template <typename T>
+c10::List<T> deque_to_list(const std::deque<T>& dq) {
+  c10::List<T> list;
+  list.reserve(dq.size());
+  for (const auto& e : dq) {
+    list.emplace_back(e);
+  }
+  return list;
+}
+
+template <typename T>
+std::deque<T> list_to_deque(const c10::List<T>& list) {
+  std::deque<T> dq;
+  for (const auto& e : list) {
+    dq.emplace_back(e);
+  }
+  return dq;
+}
+
+#define _TORCH_OPTIM_SERIALIZE(name) \
+  torch::optim::serialize(archive, #name, self.name)
+
+#define _TORCH_OPTIM_SERIALIZE_WITH_TEMPLATE_ARG(OptimizerName)               \
+  torch::optim::serialize<OptimizerName##ParamState, OptimizerName##Options>( \
+      archive, self)
+
+#define _TORCH_OPTIM_SERIALIZE_TORCH_ARG(name)           \
+  {                                                      \
+    auto ivalue = torch::IValue(name());                 \
+    /* do not serialize if name is an undefined tensor*/ \
+    if (!(ivalue.isTensor() &&                           \
+          ivalue.unsafeToTensorImpl() ==                 \
+              at::UndefinedTensorImpl::singleton())) {   \
+      archive.write(#name, ivalue);                      \
+    }                                                    \
+  }
+
+#define _TORCH_OPTIM_SERIALIZE_TORCH_ARG_DEQUE(name)           \
+  {                                                            \
+    c10::IValue ivalue = torch::IValue(deque_to_list(name())); \
+    archive.write(#name, ivalue);                              \
+  }
+
+#define _TORCH_OPTIM_DESERIALIZE_TORCH_ARG(T, name)                   \
+  {                                                                   \
+    c10::IValue ivalue;                                               \
+    bool exists = archive.try_read(#name, ivalue);                    \
+    if (exists) {                                                     \
+      name(ivalue.to<T>());                                           \
+    } else {                                                          \
+      bool is_tensor_type = std::is_base_of<torch::Tensor, T>::value; \
+      TORCH_INTERNAL_ASSERT(is_tensor_type);                          \
+    }                                                                 \
+  }
+
+#define _TORCH_OPTIM_DESERIALIZE_TORCH_ARG_OPTIONAL(T, name) \
+  {                                                          \
+    c10::IValue ivalue;                                      \
+    bool exists = archive.try_read(#name, ivalue);           \
+    if (exists) {                                            \
+      name(ivalue.toOptional<T>());                          \
+    }                                                        \
+  }
+
+#define _TORCH_OPTIM_DESERIALIZE_TORCH_ARG_DEQUE(T, name) \
+  {                                                       \
+    c10::IValue ivalue;                                   \
+    archive.read(#name, ivalue);                          \
+    auto list = ivalue.to<c10::List<T::value_type>>();    \
+    name(list_to_deque(list));                            \
+  }
+
+} // namespace optim
+} // namespace torch

venv/lib/python3.10/site-packages/torch/include/torch/csrc/api/include/torch/optim/sgd.h

@@ -0,0 +1,91 @@
+#pragma once
+
+#include <torch/nn/module.h>
+#include <torch/optim/optimizer.h>
+#include <torch/optim/serialize.h>
+#include <torch/serialize/archive.h>
+#include <torch/types.h>
+
+#include <cstddef>
+#include <utility>
+#include <vector>
+
+namespace torch {
+namespace serialize {
+class OutputArchive;
+class InputArchive;
+} // namespace serialize
+} // namespace torch
+
+namespace torch {
+namespace optim {
+
+struct TORCH_API SGDOptions : public OptimizerCloneableOptions<SGDOptions> {
+  SGDOptions(double lr);
+  TORCH_ARG(double, lr);
+  TORCH_ARG(double, momentum) = 0;
+  TORCH_ARG(double, dampening) = 0;
+  TORCH_ARG(double, weight_decay) = 0;
+  TORCH_ARG(bool, nesterov) = false;
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const SGDOptions& lhs,
+      const SGDOptions& rhs);
+  double get_lr() const override;
+  void set_lr(const double lr) override;
+};
+
+struct TORCH_API SGDParamState
+    : public OptimizerCloneableParamState<SGDParamState> {
+  TORCH_ARG(torch::Tensor, momentum_buffer);
+
+ public:
+  void serialize(torch::serialize::InputArchive& archive) override;
+  void serialize(torch::serialize::OutputArchive& archive) const override;
+  TORCH_API friend bool operator==(
+      const SGDParamState& lhs,
+      const SGDParamState& rhs);
+};
+
+class TORCH_API SGD : public Optimizer {
+ public:
+  explicit SGD(
+      std::vector<OptimizerParamGroup> param_groups,
+      SGDOptions defaults)
+      : Optimizer(
+            std::move(param_groups),
+            std::make_unique<SGDOptions>(defaults)) {
+    TORCH_CHECK(defaults.lr() >= 0, "Invalid learning rate: ", defaults.lr());
+    TORCH_CHECK(
+        defaults.momentum() >= 0,
+        "Invalid momentum value: ",
+        defaults.momentum());
+    TORCH_CHECK(
+        defaults.weight_decay() >= 0,
+        "Invalid weight_decay value: ",
+        defaults.weight_decay());
+    TORCH_CHECK(
+        !defaults.nesterov() ||
+            (defaults.momentum() > 0 && defaults.dampening() == 0),
+        "Nesterov momentum requires a momentum and zero dampening");
+  }
+
+  explicit SGD(std::vector<Tensor> params, SGDOptions defaults)
+      : SGD({OptimizerParamGroup(std::move(params))}, defaults) {}
+
+  torch::Tensor step(LossClosure closure = nullptr) override;
+
+  void save(serialize::OutputArchive& archive) const override;
+  void load(serialize::InputArchive& archive) override;
+
+ private:
+  template <typename Self, typename Archive>
+  static void serialize(Self& self, Archive& archive) {
+    _TORCH_OPTIM_SERIALIZE_WITH_TEMPLATE_ARG(SGD);
+  }
+};
+} // namespace optim
+} // namespace torch