---
id: pr-vllm-31099
repo: vllm-project/vllm
pr: 31099
title: ' [FIX] Always support TP > 4 for FP4 Gemm'
author: danielafrimi
date: '2026-01-26'
url: https://github.com/vllm-project/vllm/pull/31099
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- gemm
- nvfp4
- quantization
techniques: []
hardware_features:
- fp4
- nvfp4
kernel_types:
- gemm
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 67fe677c53e7a5f5d27a4f07edd66f44bea0495c
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py
- vllm/model_executor/layers/quantization/modelopt.py
- vllm/model_executor/layers/quantization/utils/quant_utils.py
head_ref_oid: a69c99680998210223b7e39e95849533b148a173
artifact_dir: evidence/pull-bundles/vllm/gh-31099
---
#  [FIX] Always support TP > 4 for FP4 Gemm

- Repository: `vllm-project/vllm`
- PR: [31099](https://github.com/vllm-project/vllm/pull/31099)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py`
- `vllm/model_executor/layers/quantization/modelopt.py`
- `vllm/model_executor/layers/quantization/utils/quant_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-31099`
