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[Compile] Fix import error of vllm._C #26077

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ZJY0516 wants to merge 6 commits into from
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[Compile] Fix import error of vllm._C #26077

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4302ac9
compile nvfp4_blockwise_moe_kernel.cu
ZJY0516 Oct 2, 2025
15ef167
add nvfp4_blockwise_moe_entry.cu
ZJY0516 Oct 2, 2025
fdefa9f
fix
ZJY0516 Oct 2, 2025
e6c9c5d
fix
ZJY0516 Oct 2, 2025
0d50906
Merge branch 'main' into fix-cmake
ZJY0516 Oct 2, 2025
ea08faf
Merge branch 'main' into fix-cmake
ProExpertProg Oct 2, 2025
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1 change: 1 addition & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -317,6 +317,7 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
"csrc/quantization/cutlass_w8a8/scaled_mm_entry.cu"
"csrc/quantization/fp4/nvfp4_quant_entry.cu"
"csrc/quantization/fp4/nvfp4_scaled_mm_entry.cu"
"csrc/quantization/fp4/nvfp4_blockwise_moe_entry.cu"
"csrc/sparse/cutlass/sparse_scaled_mm_entry.cu"
"csrc/cutlass_extensions/common.cpp"
"csrc/quantization/fp8/per_token_group_quant.cu")
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26 changes: 26 additions & 0 deletions csrc/quantization/fp4/nvfp4_blockwise_moe_entry.cu
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@@ -0,0 +1,26 @@
#include <torch/all.h>

#if defined ENABLE_NVFP4_SM100 && ENABLE_NVFP4_SM100
void cutlass_fp4_group_mm_sm100(
torch::Tensor& output, const torch::Tensor& a, const torch::Tensor& b,
const torch::Tensor& a_blockscale, const torch::Tensor& b_blockscales,
const torch::Tensor& alphas, const torch::Tensor& problem_sizes,
const torch::Tensor& expert_offsets, const torch::Tensor& sf_offsets);
#endif

void cutlass_fp4_group_mm(
torch::Tensor& output, const torch::Tensor& a, const torch::Tensor& b,
const torch::Tensor& a_blockscale, const torch::Tensor& b_blockscales,
const torch::Tensor& alphas, const torch::Tensor& problem_sizes,
const torch::Tensor& expert_offsets, const torch::Tensor& sf_offsets) {
#if defined ENABLE_NVFP4_SM100 && ENABLE_NVFP4_SM100
cutlass_fp4_group_mm_sm100(output, a, b, a_blockscale, b_blockscales, alphas,
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problem_sizes, expert_offsets, sf_offsets);
#else
TORCH_CHECK_NOT_IMPLEMENTED(
false,
"No compiled cutlass_fp4_group_mm kernel, vLLM must "
"be compiled with ENABLE_NVFP4_SM100 for SM100+ and CUDA "
"12.8 or above.");
#endif
}
2 changes: 1 addition & 1 deletion csrc/quantization/fp4/nvfp4_blockwise_moe_kernel.cu
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Expand Up @@ -367,7 +367,7 @@ constexpr auto SF_DTYPE = at::ScalarType::Float8_e4m3fn;
CHECK_CONTIGUOUS(x, m); \
CHECK_TYPE(x, st, m)

void cutlass_fp4_group_mm(
void cutlass_fp4_group_mm_sm100(
torch::Tensor& output, const torch::Tensor& a, const torch::Tensor& b,
const torch::Tensor& a_blockscale, const torch::Tensor& b_blockscales,
const torch::Tensor& alphas, const torch::Tensor& problem_sizes,
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