---
id: pr-vllm-23379
repo: vllm-project/vllm
pr: 23379
title: '[Perf] Remove duplicated NVFP4 blockscales to save memory'
author: mgoin
date: '2025-08-26'
url: https://github.com/vllm-project/vllm/pull/23379
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: d52358c1e07768266e3db92e847cd28af87ca4b9
inclusion_reason: defer
changed_paths:
- vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe.py
- vllm/model_executor/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py
- vllm/model_executor/layers/quantization/modelopt.py
artifact_dir: evidence/pull-bundles/vllm/gh-23379
head_ref_oid: 0fefa4c1cd4d1393abf50e1d9498fc4f15715df4
---
# [Perf] Remove duplicated NVFP4 blockscales to save memory

- Repository: `vllm-project/vllm`
- PR: [23379](https://github.com/vllm-project/vllm/pull/23379)
- Decision: `defer`
- Reason: defer

## Changed Paths

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

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-23379`
