---
id: pr-sglang-18750
repo: sgl-project/sglang
pr: 18750
title: 'fix(sgl-kernel): use >= 120 for SM12x CUDA kernel dispatch'
author: blake-snc
date: '2026-02-15'
url: https://github.com/sgl-project/sglang/pull/18750
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- csrc kernel
- gemm_quant
- sm90
techniques:
- fine-grained-quantization
hardware_features:
- fp4
- fp8
- hopper
- nvfp4
kernel_types:
- gemm
- moe
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 0d3089601547dd99412dd51427733c304ab2084a
inclusion_reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.
changed_paths:
- sgl-kernel/csrc/gemm/fp8_blockwise_gemm_kernel.cu
- sgl-kernel/csrc/gemm/nvfp4_scaled_mm_kernels.cu
- sgl-kernel/csrc/moe/nvfp4_blockwise_moe.cu
artifact_dir: evidence/pull-bundles/sglang/gh-18750
head_ref_oid: ddb17742932c7958cca66d52a9cd8173afabeaa6
---
# fix(sgl-kernel): use >= 120 for SM12x CUDA kernel dispatch

- Repository: `sgl-project/sglang`
- PR: [18750](https://github.com/sgl-project/sglang/pull/18750)
- Decision: `Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.`
- Reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.

## Changed Paths

- `sgl-kernel/csrc/gemm/fp8_blockwise_gemm_kernel.cu`
- `sgl-kernel/csrc/gemm/nvfp4_scaled_mm_kernels.cu`
- `sgl-kernel/csrc/moe/nvfp4_blockwise_moe.cu`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-18750`
