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mirror of https://github.com/Dao-AILab/flash-attention
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Branch: changes_for_fp8
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flash-attention
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xentropy
Chirag Jain 50896ec574 Make nvcc threads configurable via environment variable (#885) 9 months ago
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README.md 5400fdc4ac [CE] Implement CrossEntropyLoss in Triton 1 year ago
interface.cpp dff68c2b22 Add smoothing for CrossEntropyParallel, rename to CrossEntropyLoss 2 years ago
setup.py 50896ec574 Make nvcc threads configurable via environment variable (#885) 9 months ago
xentropy_kernel.cu dff68c2b22 Add smoothing for CrossEntropyParallel, rename to CrossEntropyLoss 2 years ago

README.md

This CUDA extension implements optimized cross-entropy loss, adapted from Apex's Xentropy. We make it work for bfloat16 and support in-place backward to save memory.

It has only been tested on A100s.

cd csrc/xentropy && pip install .

As of 2023-09-15, this extension is no longer used in the FlashAttention repo. We've instead switched to a Triton-based implementation. See the CrossEntropyLoss module for more details.