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[Ascend][Feat] Add Ascend sampling backend (#12692)

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Co-authored-by: ronnie_zheng <zl19940307@163.com>
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Zhihao Lyu
2025-11-15 21:59:58 +08:00
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co-authored by ronnie_zheng
parent 2aec8b6e1b
commit 10592e9c08
5 changed files with 165 additions and 4 deletions
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docs/advanced_features/server_arguments.md
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@@ -239,7 +239,7 @@ Please consult the documentation below and [server_args.py](https://github.com/s
| `--attention-backend` | Choose the kernels for attention layers. | `None` | `triton`, `torch_native`, `flex_attention`, `nsa`, `cutlass_mla`, `fa3`, `fa4`, `flashinfer`, `flashmla`, `trtllm_mla`, `trtllm_mha`, `dual_chunk_flash_attn`, `aiter`, `wave`, `intel_amx`, `ascend` |
| `--prefill-attention-backend` | Choose the kernels for prefill attention layers (have priority over --attention-backend). | `None` | `triton`, `torch_native`, `flex_attention`, `nsa`, `cutlass_mla`, `fa3`, `fa4`, `flashinfer`, `flashmla`, `trtllm_mla`, `trtllm_mha`, `dual_chunk_flash_attn`, `aiter`, `wave`, `intel_amx`, `ascend` |
| `--decode-attention-backend` | Choose the kernels for decode attention layers (have priority over --attention-backend). | `None` | `triton`, `torch_native`, `flex_attention`, `nsa`, `cutlass_mla`, `fa3`, `fa4`, `flashinfer`, `flashmla`, `trtllm_mla`, `trtllm_mha`, `dual_chunk_flash_attn`, `aiter`, `wave`, `intel_amx`, `ascend` |
| `--sampling-backend` | Choose the kernels for sampling layers. | `None` | `flashinfer`, `pytorch` |
| `--sampling-backend` | Choose the kernels for sampling layers. | `None` | `flashinfer`, `pytorch`, `ascend` |
| `--grammar-backend` | Choose the backend for grammar-guided decoding. | `None` | `xgrammar`, `outlines`, `llguidance`, `none` |
| `--mm-attention-backend` | Set multimodal attention backend. | `None` | `sdpa`, `fa3`, `triton_attn`, `ascend_attn`, `aiter_attn` |
| `--nsa-prefill` | Choose the NSA backend for the prefill stage (overrides `--attention-backend` when running DeepSeek NSA-style attention). | `flashmla_sparse` | `flashmla_sparse`, `flashmla_decode`, `fa3`, `tilelang`, `aiter` |