---
id: pr-sglang-22594
repo: sgl-project/sglang
pr: 22594
title: 'diffusion: fix layerwise offload for ModelOpt quantized DiTs'
author: BBuf
date: '2026-04-13'
url: https://github.com/sgl-project/sglang/pull/22594
source_category: upstream-code
architectures:
- sm100
tags:
- kernel-fusion
- quantization
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 37fc47c64559e54ab131ada6ea63be539f0277e6
inclusion_reason: kernel file changes
changed_paths:
- docs/diffusion/quantization.md
- python/sglang/multimodal_gen/.claude/skills/sglang-diffusion-modelopt-quant/SKILL.md
- python/sglang/multimodal_gen/runtime/loader/transformer_load_utils.py
- python/sglang/multimodal_gen/runtime/utils/layerwise_offload.py
- python/sglang/multimodal_gen/test/unit/test_layerwise_offload.py
head_ref_oid: 520d2e7245fd4c8c56bc884c4084fa2e61752fad
artifact_dir: evidence/pull-bundles/sglang/gh-22594
---
# diffusion: fix layerwise offload for ModelOpt quantized DiTs

- Repository: `sgl-project/sglang`
- PR: [22594](https://github.com/sgl-project/sglang/pull/22594)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `docs/diffusion/quantization.md`
- `python/sglang/multimodal_gen/.claude/skills/sglang-diffusion-modelopt-quant/SKILL.md`
- `python/sglang/multimodal_gen/runtime/loader/transformer_load_utils.py`
- `python/sglang/multimodal_gen/runtime/utils/layerwise_offload.py`
- `python/sglang/multimodal_gen/test/unit/test_layerwise_offload.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-22594`
