---
id: pr-cutlass-2746
repo: NVIDIA/cutlass
pr: 2746
title: Support for GEMM-K=0 for Blackwell Grouped GEMMs
author: ANIKET-SHIVAM
date: '2025-11-04'
url: https://github.com/NVIDIA/cutlass/pull/2746
source_category: upstream-code
architectures:
- sm100
tags:
- grouped-gemm
- gemm
- pipeline-stages
techniques:
- warp-specialization
- persistent-kernel
- pipeline-stages
hardware_features:
- tcgen05
- tmem
- clc
kernel_types:
- grouped-gemm
- gemm
languages:
- cuda-cpp
captured_at: 2026-04-17
status: merged
merge_sha: 020c700e9782723ed6f61d8c4f13a364658dcb43
inclusion_reason: manually curated, Blackwell kernel relevance
changed_paths:
- examples/75_blackwell_grouped_gemm/75_blackwell_grouped_gemm.cu
- examples/75_blackwell_grouped_gemm/75_blackwell_grouped_gemm_block_scaled.cu
- examples/75_blackwell_grouped_gemm/CMakeLists.txt
- include/cutlass/epilogue/collective/detail.hpp
- include/cutlass/epilogue/collective/sm100_epilogue_array_nosmem.hpp
- include/cutlass/epilogue/collective/sm100_epilogue_array_tma_warpspecialized.hpp
- include/cutlass/gemm/collective/sm100_blockscaled_mma_array_warpspecialized.hpp
- include/cutlass/gemm/kernel/sm100_gemm_array_tma_warpspecialized.hpp
head_ref_oid: ee3a97037f0a238baf1454fa1d865e7d05cb6fd8
artifact_dir: evidence/pull-bundles/cutlass/gh-2746
---
# Support for GEMM-K=0 for Blackwell Grouped GEMMs

- Repository: `NVIDIA/cutlass`
- PR: [2746](https://github.com/NVIDIA/cutlass/pull/2746)
- Decision: `manually curated, Blackwell kernel relevance`
- Reason: manually curated, Blackwell kernel relevance

## Changed Paths

- `examples/75_blackwell_grouped_gemm/75_blackwell_grouped_gemm.cu`
- `examples/75_blackwell_grouped_gemm/75_blackwell_grouped_gemm_block_scaled.cu`
- `examples/75_blackwell_grouped_gemm/CMakeLists.txt`
- `include/cutlass/epilogue/collective/detail.hpp`
- `include/cutlass/epilogue/collective/sm100_epilogue_array_nosmem.hpp`
- `include/cutlass/epilogue/collective/sm100_epilogue_array_tma_warpspecialized.hpp`
- `include/cutlass/gemm/collective/sm100_blockscaled_mma_array_warpspecialized.hpp`
- `include/cutlass/gemm/kernel/sm100_gemm_array_tma_warpspecialized.hpp`

## Evidence Bundle

`evidence/pull-bundles/cutlass/gh-2746`
