NVIDIA / NVIDIA/TransformerEngine
is NVFP4 not supported for rtx 50 series?
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- Python
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Description
Hi
I locally compiled branch release 2.8.
when I tried to use nvfp4 on rtx 50 series it gave me error
/home/aza/workspace/projects/nvfp4/TransformerEngine/transformer_engine/common/util/nvfp4_transpose.cuh:234 in function mul_cvt_bf16_to_fp4_4x_with_rn (thread (95,0,0), block (2,2,0)): FP4 cvt PTX instructions are architecture-specific. Try recompiling with sm_XXXa instead of sm_XXX.
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Research direction
Start with transformer_engine/common/util/nvfp4_transpose.cuh, especially mul_cvt_bf16_to_fp4_4x_with_rn, and inspect the release 2.8 compilation targets for RTX 50 series. Reproduce the error with the reported build, then determine whether the required sm_XXXa target is missing or unsupported. Done means establishing the support status and identifying the necessary build or code change.
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Assessment
- Domain
- build-system, machine-learning, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 38/100