Clover-35B-A3B-Preview - IQ4_XS GGUF

An IQ4_XS quantization of DiffuSpace's Clover-35B-A3B-Preview, made directly from the original BF16 weights through a BF16 GGUF intermediate. No previously quantized weights were used. All credit for the model belongs to DiffuSpace and its upstream authors.

File Quantization Size
Clover-35B-A3B-Preview-IQ4_XS.gguf IQ4_XS, default llama.cpp mixed tensor policy 18,942,280,960 bytes (18.94 GB)

The original Clover architecture and its additional bidirectional GDN tensors are preserved. This is the Clover diffusion model, not its original Qwen base model. GGUF weights are not restricted to Apple Silicon; execution requires a backend that implements Clover.

Required runtime

Use Clover support PR #31306, branch dev-clover from Maphist0/llama.cpp-pub, commit 4838ffb0c8ade92f34d9157deea38d92758ab824. This quantization does not imply compatibility with unpatched llama.cpp releases.

The separate local CUDA build targets compute capability 8.9, with CUDA Graphs and Flash Attention enabled. The binary is not included in this repository.

Quantization provenance

Source revision: 4b0402b65e523d0183a14c431955438714cb16ff.

python convert_hf_to_gguf.py ./Clover-35B-A3B-Preview-BF16 --outfile ./Clover-35B-A3B-Preview-BF16.gguf --outtype bf16
llama-quantize ./Clover-35B-A3B-Preview-BF16.gguf ./Clover-35B-A3B-Preview-IQ4_XS.gguf IQ4_XS 16

No importance matrix was used. SHA-256 and reproducibility metadata are included in SHA256SUMS and quantization.json.

Intended RTX 4070 12 GB / 64 GB RAM configuration

The following command uses a 128K total context, keeps expert weights from the first 32 layers in RAM, and places the remaining 8 expert layers and other supported layers on the GPU. The 8 GPU expert layers contain 3,264 MiB of quantized weights. Additional context and compute buffers also require VRAM. Loading with --load-mode none avoids memory-mapped CPU expert weights. Batch and microbatch are both 4,096.

llama-server -m ./Clover-35B-A3B-Preview-IQ4_XS.gguf --alias clover-35b-a3b -c 131072 -ngl all --n-cpu-moe 32 -fit off --load-mode none -fa on -ctk q4_0 -ctv q4_0 -b 4096 -ub 4096 -t 8 -tb 16 -np 1 --cache-ram 0 --ctx-checkpoints 0 --jinja --spec-type none --host 127.0.0.1 --port 8081

This repository does not provide a controlled quality or throughput evaluation. Memory fit and performance depend on the workload and other GPU users. The published artifact was checked for architecture, quantization metadata, tensor preservation and SHA-256 integrity.

The default command uses causal decoding with --spec-type none. Clover's draft-self implementation is experimental and is not a guaranteed speedup, particularly with CPU-resident MoE experts. At the pinned commit above, llama-server also needs a target-context initialization fix before draft-self can initialize: params_base.speculative.draft.ctx_tgt = ctx_tgt must be set independently of the separate draft/MTP-model branch. The default command does not require that fix.

License and attribution

Apache-2.0, as in the original model. The original LICENSE and ATTRIBUTIONS.md are included. Clover is derived from Qwen3.6-35B-A3B; see the original model card and attributions for provenance.

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