NVIDIA / NVIDIA/CUDALibrarySamples

LtNvfp4Matmul‘s scale is NULL!

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@rsdubtso is already working on this.

Since Jul 27, 2025.

cuBLASLt
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Cuda
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Description

When testing the LtNvfp4Matmul example on an SM_101 architecture GPU, I encountered the following runtime error:
"[cublasLt][702814][Error][cublasLtMatmulAlgoGetHeuristic] The scaling mode for A scale (VEC16_UE4M3) requires a custom pointer for A scale
cuBLAS API failed with status 7"

I noticed that the a_scale parameter being passed is NULL. Could you please advise how to modify this?

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