Docs: clarify MS-AMP limitations and alternatives #3918
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Add practical notes about CUDA/container and MSCCL/NCCL issues, and emphasize TE/torchao for new FP8 projects. Ref: huggingface#3639 Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
Update low-precision training docs to clarify MS-AMP compatibility issues (older CUDA versions, MSCCL/NCCL conflicts) and emphasize TransformersEngine/torchao for new FP8 projects.
Changes
Test plan
Ref: #3639