---
id: pr-vllm-19757
repo: vllm-project/vllm
pr: 19757
title: '[feat]: CUTLASS block scaled group gemm for SM100'
author: djmmoss
date: '2025-07-04'
url: https://github.com/vllm-project/vllm/pull/19757
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- gemm
- grouped-gemm
- kernel-fusion
- moe
- quantization
- tma
techniques:
- kernel-fusion
hardware_features:
- fp8
- tma
kernel_types:
- gemm
- grouped-gemm
- moe
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 3d184b95b83bd1c755811238b013b51c49da3951
inclusion_reason: kernel file changes
changed_paths:
- CMakeLists.txt
- csrc/cutlass_extensions/gemm/collective/sm90_mma_tma_gmma_ss_warpspecialized_fp8_blockwise_scaling.hpp
- csrc/ops.h
- csrc/quantization/cutlass_w8a8/c3x/scaled_mm.cuh
- csrc/quantization/cutlass_w8a8/moe/blockwise_scaled_group_mm_sm100.cu
- csrc/quantization/machete/machete_mainloop.cuh
- csrc/sparse/cutlass/sparse_scaled_mm_c3x.cuh
- csrc/torch_bindings.cpp
- tests/kernels/moe/test_cutlass_grouped_gemm.py
- vllm/_custom_ops.py
- vllm/model_executor/layers/fused_moe/cutlass_moe.py
- vllm/model_executor/layers/fused_moe/fused_moe.py
- vllm/model_executor/layers/quantization/fp8.py
head_ref_oid: 97904b6c09d1159103b378c60b0495d374fac321
artifact_dir: evidence/pull-bundles/vllm/gh-19757
---
# [feat]: CUTLASS block scaled group gemm for SM100

- Repository: `vllm-project/vllm`
- PR: [19757](https://github.com/vllm-project/vllm/pull/19757)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `CMakeLists.txt`
- `csrc/cutlass_extensions/gemm/collective/sm90_mma_tma_gmma_ss_warpspecialized_fp8_blockwise_scaling.hpp`
- `csrc/ops.h`
- `csrc/quantization/cutlass_w8a8/c3x/scaled_mm.cuh`
- `csrc/quantization/cutlass_w8a8/moe/blockwise_scaled_group_mm_sm100.cu`
- `csrc/quantization/machete/machete_mainloop.cuh`
- `csrc/sparse/cutlass/sparse_scaled_mm_c3x.cuh`
- `csrc/torch_bindings.cpp`
- `tests/kernels/moe/test_cutlass_grouped_gemm.py`
- `vllm/_custom_ops.py`
- `vllm/model_executor/layers/fused_moe/cutlass_moe.py`
- `vllm/model_executor/layers/fused_moe/fused_moe.py`
- `vllm/model_executor/layers/quantization/fp8.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-19757`
