| # Copyright (c) Microsoft Corporation. | |
| # SPDX-License-Identifier: Apache-2.0 | |
| # DeepSpeed Team | |
| import cupy | |
| from torch.utils.dlpack import to_dlpack | |
| from torch.utils.dlpack import from_dlpack | |
| class CupyBackend(object): | |
| def __init__(self): | |
| pass | |
| def torch2cupy(self, tensor): | |
| return cupy.fromDlpack(to_dlpack(tensor)) | |
| def cupy2torch(self, cupy_tensor): | |
| return from_dlpack(cupy_tensor.toDlpack()) | |
| def compress_by_chunk(self, cupy_bool_tensor, num_chunks): | |
| packed_sign = cupy.packbits(cupy_bool_tensor) | |
| sign_list_packed = cupy.split(packed_sign, num_chunks) | |
| cupy.cuda.get_current_stream().synchronize() | |
| return sign_list_packed | |