---
id: pr-flashinfer-1597
repo: flashinfer-ai/flashinfer
pr: 1597
title: 'bugfix: fix the register overflow issue for topk renorm kernels on blackwell'
author: yzh119
date: '2025-08-28'
url: https://github.com/flashinfer-ai/flashinfer/pull/1597
source_category: upstream-code
architectures:
- sm100
tags:
- gemm
techniques: []
hardware_features: []
kernel_types: []
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 1a85c439a064c1609568675aa580a409a53fb183
inclusion_reason: kernel file changes
changed_paths:
- include/flashinfer/sampling.cuh
head_ref_oid: 6d20c300443c5bb689342e3daa60292643bc3dcd
artifact_dir: evidence/pull-bundles/flashinfer/gh-1597
---
# bugfix: fix the register overflow issue for topk renorm kernels on blackwell

- Repository: `flashinfer-ai/flashinfer`
- PR: [1597](https://github.com/flashinfer-ai/flashinfer/pull/1597)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `include/flashinfer/sampling.cuh`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1597`
