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https://github.com/deepseek-ai/FlashMLA
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cuda12.8 recommendation
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@ -20,7 +20,7 @@ python setup.py install
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python tests/test_flash_mla.py
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```
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Achieving up to 3000 GB/s in memory-bound configuration and 580 TFLOPS in computation-bound configuration on H800 SXM5, using CUDA 12.6.
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Achieving up to 3000 GB/s in memory-bound configuration and 580 TFLOPS in computation-bound configuration on H800 SXM5, using CUDA 12.8.
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### Usage
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@ -42,6 +42,7 @@ for i in range(num_layers):
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- Hopper GPUs
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- CUDA 12.3 and above
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- **But we highly recommend 12.8 or above for the best performance**
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- PyTorch 2.0 and above
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## Acknowledgement
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@ -52,7 +53,7 @@ FlashMLA is inspired by [FlashAttention 2&3](https://github.com/dao-AILab/flash-
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```bibtex
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@misc{flashmla2025,
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title={FlashMLA: Efficient MLA decoding kernel},
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title={FlashMLA: Efficient MLA decoding kernels},
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author={Jiashi Li},
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year={2025},
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publisher = {GitHub},
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4
setup.py
4
setup.py
@ -13,10 +13,12 @@ from torch.utils.cpp_extension import (
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DISABLE_FP16 = os.getenv("FLASH_MLA_DISABLE_FP16", "FALSE") == "TRUE"
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def append_nvcc_threads(nvcc_extra_args):
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nvcc_threads = os.getenv("NVCC_THREADS") or "32"
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return nvcc_extra_args + ["--threads", nvcc_threads]
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def get_sources():
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sources = [
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"csrc/flash_api.cpp",
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@ -29,12 +31,14 @@ def get_sources():
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return sources
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def get_features_args():
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features_args = []
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if DISABLE_FP16:
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features_args.append("-DFLASH_MLA_DISABLE_FP16")
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return features_args
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subprocess.run(["git", "submodule", "update", "--init", "csrc/cutlass"])
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cc_flag = []
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