sf_layout.py was a no-op (return sf) but the actual remap happens in remap_sf_to_cutlass_kernel in cutlass_nvfp4_gemm.cu. Updated sf_layout.py to pure reference docs so nobody gets confused again.
sf_layout.py was a no-op (return sf) but the actual remap happens in remap_sf_to_cutlass_kernel in cutlass_nvfp4_gemm.cu. Updated sf_layout.py to pure reference docs so nobody gets confused again.