---
id: pr-flashinfer-2148
repo: flashinfer-ai/flashinfer
pr: 2148
title: Enable Hopper FA3 FP8 attention in decode.py
author: nvpohanh
date: '2026-01-06'
url: https://github.com/flashinfer-ai/flashinfer/pull/2148
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- attention
- decode
- fp8
- prefill
techniques: []
hardware_features:
- fp8
kernel_types:
- attention
- decode
- prefill
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 3346a8bbb69f38613efe91304b04089d17b572bf
inclusion_reason: kernel file changes
changed_paths:
- flashinfer/decode.py
- flashinfer/jit/attention/modules.py
- flashinfer/prefill.py
- tests/attention/test_hopper_fp8_attention.py
- tests/utils/test_jit_example.py
head_ref_oid: 14779783396e743e111d7ad531a1fa21852660c9
artifact_dir: evidence/pull-bundles/flashinfer/gh-2148
---
# Enable Hopper FA3 FP8 attention in decode.py

- Repository: `flashinfer-ai/flashinfer`
- PR: [2148](https://github.com/flashinfer-ai/flashinfer/pull/2148)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `flashinfer/decode.py`
- `flashinfer/jit/attention/modules.py`
- `flashinfer/prefill.py`
- `tests/attention/test_hopper_fp8_attention.py`
- `tests/utils/test_jit_example.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2148`
