---
id: pr-flashinfer-2839
repo: flashinfer-ai/flashinfer
pr: 2839
title: '[Spark bug] Fix arch 12.1 -> "sm120a" flag for Spark, CUDA 12.9'
author: kahyunnam
date: '2026-03-21'
url: https://github.com/flashinfer-ai/flashinfer/pull/2839
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: e2f821b8c5f20eacbc343f03f9db25a6b8af2216
inclusion_reason: include
changed_paths:
- flashinfer/compilation_context.py
artifact_dir: evidence/pull-bundles/flashinfer/gh-2839
head_ref_oid: 4c38cbd8a9b5a726432b53a7dd86b27f2974174a
---
# [Spark bug] Fix arch 12.1 -> "sm120a" flag for Spark, CUDA 12.9

- Repository: `flashinfer-ai/flashinfer`
- PR: [2839](https://github.com/flashinfer-ai/flashinfer/pull/2839)
- Decision: `include`
- Reason: include

## Changed Paths

- `flashinfer/compilation_context.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2839`
