---
id: pr-vllm-22346
repo: vllm-project/vllm
pr: 22346
title: '[Kernel] Add nvfp4 gemm flashinfer backends'
author: nvjullin
date: '2025-08-14'
url: https://github.com/vllm-project/vllm/pull/22346
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 279a5f31b3faa6f40759516efa5c742f637ab8b7
inclusion_reason: defer
changed_paths:
- .buildkite/test-pipeline.yaml
- tests/kernels/quantization/test_flashinfer_nvfp4_scaled_mm.py
- tests/kernels/quantization/test_nvfp4_scaled_mm.py
- vllm/envs.py
- vllm/model_executor/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py
- vllm/model_executor/layers/quantization/modelopt.py
- vllm/model_executor/warmup/kernel_warmup.py
- vllm/utils/flashinfer.py
- vllm/v1/worker/gpu_worker.py
artifact_dir: evidence/pull-bundles/vllm/gh-22346
head_ref_oid: 026026bc7484cd3f282e6559a3e80a382656c3d0
---
# [Kernel] Add nvfp4 gemm flashinfer backends

- Repository: `vllm-project/vllm`
- PR: [22346](https://github.com/vllm-project/vllm/pull/22346)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `.buildkite/test-pipeline.yaml`
- `tests/kernels/quantization/test_flashinfer_nvfp4_scaled_mm.py`
- `tests/kernels/quantization/test_nvfp4_scaled_mm.py`
- `vllm/envs.py`
- `vllm/model_executor/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py`
- `vllm/model_executor/layers/quantization/modelopt.py`
- `vllm/model_executor/warmup/kernel_warmup.py`
- `vllm/utils/flashinfer.py`
- `vllm/v1/worker/gpu_worker.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-22346`
