Skip to content

[Bugfix] revert PR#1758 which introduced the accuracy problem of qwen3-omni#2009

Merged
hsliuustc0106 merged 4 commits into
vllm-project:mainfrom
R2-Y:revert_commit
Mar 19, 2026
Merged

[Bugfix] revert PR#1758 which introduced the accuracy problem of qwen3-omni#2009
hsliuustc0106 merged 4 commits into
vllm-project:mainfrom
R2-Y:revert_commit

Conversation

@R2-Y
Copy link
Copy Markdown
Contributor

@R2-Y R2-Y commented Mar 19, 2026

PLEASE FILL IN THE PR DESCRIPTION HERE ENSURING ALL CHECKLIST ITEMS (AT THE BOTTOM) HAVE BEEN CONSIDERED.

Purpose

revert PR#1758 which introduced the accuracy problem of qwen3-omni

Test Plan

pytest -sv test_qwen3_omni_expansion.py --run-level=advanced_model > qwen3_expansion_test.log 2>&1 &

Test Result

image
Essential Elements of an Effective PR Description Checklist
  • The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
  • The test plan. Please provide the test scripts & test commands. Please state the reasons if your codes don't require additional test scripts. For test file guidelines, please check the test style doc
  • The test results. Please paste the results comparison before and after, or the e2e results.
  • (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model. Please run mkdocs serve to sync the documentation editions to ./docs.
  • (Optional) Release notes update. If your change is user-facing, please update the release notes draft.

BEFORE SUBMITTING, PLEASE READ https://github.com/vllm-project/vllm-omni/blob/main/CONTRIBUTING.md (anything written below this line will be removed by GitHub Actions)

@hsliuustc0106 @amy-why-3459 @yenuo26 @LJH-LBJ

Signed-off-by: Rein Yang <ruiruyang2@gmail.com>
@R2-Y R2-Y requested a review from hsliuustc0106 as a code owner March 19, 2026 08:28
@R2-Y R2-Y changed the title revert PR#1758 which introduced the accuracy problem of qwen3-omni [Bugfix] revert PR#1758 which introduced the accuracy problem of qwen3-omni Mar 19, 2026
Copy link
Copy Markdown

@chatgpt-codex-connector chatgpt-codex-connector Bot left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: f903af9324

ℹ️ About Codex in GitHub

Codex has been enabled to automatically review pull requests in this repo. Reviews are triggered when you

  • Open a pull request for review
  • Mark a draft as ready
  • Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

When you sign up for Codex through ChatGPT, Codex can also answer questions or update the PR, like "@codex address that feedback".

Comment on lines +196 to +198
self.layer0_embed_buffer[:batch_size].copy_(layer0_embed)
pos_all_layers, current_input = self.code_predictor(
layer0_code, self.layer0_embed_buffer[:batch_size], last_talker_hidden
Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

P1 Badge Keep layer0 embed buffer on active device

layer0_embed_buffer is allocated as a plain CPU tensor and then passed directly into self.code_predictor(...); during normal CUDA talker decode, layer0_embed/last_talker_hidden are on GPU, so this introduces mixed-device tensors and can fail at the first torch.cat in Qwen3OmniMoeTalkerCodePredictor.forward. This makes the decode path crash for GPU inference unless everything is forced to CPU.

Useful? React with 👍 / 👎.

Comment on lines +1126 to +1128
logits_cpu = logits.cpu()
logits_cpu[:, self.suppressed_tokens] = -1e9
logits = logits_cpu.to(logits.device)
Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

P2 Badge Remove CPU copy from talker logits suppression

This block copies every talker logits tensor to CPU and back on each decode step, then applies the same suppression again on GPU. The extra host round-trip (logits.cpu() + .to(...)) forces synchronization and moves full-vocab logits across PCIe/host memory, causing a significant throughput regression in production decoding while providing no correctness benefit beyond the following in-place GPU assignment.

Useful? React with 👍 / 👎.

@hsliuustc0106 hsliuustc0106 added the ready label to trigger buildkite CI label Mar 19, 2026
@hsliuustc0106 hsliuustc0106 merged commit 60a8c01 into vllm-project:main Mar 19, 2026
6 of 7 checks passed
@R2-Y R2-Y deleted the revert_commit branch March 19, 2026 09:38
yiliu30 pushed a commit to yiliu30/vllm-omni-fork that referenced this pull request Mar 20, 2026
…3-omni (vllm-project#2009)

Signed-off-by: Rein Yang <ruiruyang2@gmail.com>

Signed-off-by: yiliu30 <yi4.liu@intel.com>
hsliuustc0106 added a commit to hsliuustc0106/vllm-omni-skills that referenced this pull request Mar 22, 2026
### vllm-omni-audio-tts
- Source: [PR #2059](vllm-project/vllm-omni#2059) - [BugFix][Qwen3TTS] CodePredictor CudaGraph Pool
- Changes:
  - Bug fix: [BugFix][Qwen3TTS] CodePredictor CudaGraph Pool

### vllm-omni-perf
- Source: [PR #2059](vllm-project/vllm-omni#2059) - [BugFix][Qwen3TTS] CodePredictor CudaGraph Pool
- Changes:
  - Bug fix: [BugFix][Qwen3TTS] CodePredictor CudaGraph Pool

### vllm-omni-api
- Source: [PR #2058](vllm-project/vllm-omni#2058) - [Bugfix] Fix Fish Speech and CosyVoice3 online serving - missing is_comprehension and broken model detection
- Changes:
  - Bug fix: [Bugfix] Fix Fish Speech and CosyVoice3 online serving - missing is_comprehension and broken model detection

### vllm-omni-contrib
- Source: [PR #2045](vllm-project/vllm-omni#2045) - [Voxtral] Improve example

### vllm-omni-cicd
- Source: [PR #2045](vllm-project/vllm-omni#2045) - [Voxtral] Improve example

### vllm-omni-api
- Source: [PR #2042](vllm-project/vllm-omni#2042) - [bugfix] /chat/completion doesn't read extra_body for diffusion model
- Changes:
  - Bug fix: [bugfix] /chat/completion doesn't read extra_body for diffusion model

### vllm-omni-perf
- Source: [PR #2042](vllm-project/vllm-omni#2042) - [bugfix] /chat/completion doesn't read extra_body for diffusion model
- Changes:
  - Bug fix: [bugfix] /chat/completion doesn't read extra_body for diffusion model

### vllm-omni-contrib
- Source: [PR #2038](vllm-project/vllm-omni#2038) - [Doc] Update docs and dockerfiles for rebase of vllm v0.18.0

### vllm-omni-serving
- Source: [PR #2037](vllm-project/vllm-omni#2037) - [Rebase] Rebase to vllm v0.18.0

### vllm-omni-contrib
- Source: [PR #2037](vllm-project/vllm-omni#2037) - [Rebase] Rebase to vllm v0.18.0

### vllm-omni-api
- Source: [PR #2037](vllm-project/vllm-omni#2037) - [Rebase] Rebase to vllm v0.18.0

### vllm-omni-cicd
- Source: [PR #2037](vllm-project/vllm-omni#2037) - [Rebase] Rebase to vllm v0.18.0

### vllm-omni-cicd
- Source: [PR #2032](vllm-project/vllm-omni#2032) - [CI] Change Bagel online test environment variable `VLLM_TEST_CLEAN_GPU_MEMORY` to `0`

### vllm-omni-cicd
- Source: [PR #2031](vllm-project/vllm-omni#2031) - [CI] Fix test.
- Changes:
  - Bug fix: [CI] Fix test.

### vllm-omni-cicd
- Source: [PR #2017](vllm-project/vllm-omni#2017) - [CI] [ROCm] Setup `test-ready.yml` and `test-merge.yml`

### vllm-omni-cicd
- Source: [PR #2014](vllm-project/vllm-omni#2014) - [Test] Implement mock HTTP request handling in benchmark CLI tests

### vllm-omni-perf
- Source: [PR #2014](vllm-project/vllm-omni#2014) - [Test] Implement mock HTTP request handling in benchmark CLI tests

### vllm-omni-serving
- Source: [PR #2012](vllm-project/vllm-omni#2012) - [Fixbug][Perf] Qwen3-omni: code predictor with re-prefill + SDPA and eliminate decode hot-path CPU round-trips
- Changes:
  - Bug fix: [Fixbug][Perf] Qwen3-omni: code predictor with re-prefill + SDPA and eliminate decode hot-path CPU round-trips

### vllm-omni-image-gen
- Source: [PR #2012](vllm-project/vllm-omni#2012) - [Fixbug][Perf] Qwen3-omni: code predictor with re-prefill + SDPA and eliminate decode hot-path CPU round-trips
- Changes:
  - Bug fix: [Fixbug][Perf] Qwen3-omni: code predictor with re-prefill + SDPA and eliminate decode hot-path CPU round-trips

### vllm-omni-perf
- Source: [PR #2012](vllm-project/vllm-omni#2012) - [Fixbug][Perf] Qwen3-omni: code predictor with re-prefill + SDPA and eliminate decode hot-path CPU round-trips
- Changes:
  - Bug fix: [Fixbug][Perf] Qwen3-omni: code predictor with re-prefill + SDPA and eliminate decode hot-path CPU round-trips

### vllm-omni-serving
- Source: [PR #2009](vllm-project/vllm-omni#2009) - [Bugfix] revert PR#1758 which introduced the accuracy problem of qwen3-omni
- Changes:
  - Bug fix: [Bugfix] revert PR#1758 which introduced the accuracy problem of qwen3-omni

### vllm-omni-image-gen
- Source: [PR #2007](vllm-project/vllm-omni#2007) - [Bugfix]Fix bug of online server can not return mutli images
- Changes:
  - Bug fix: [Bugfix]Fix bug of online server can not return mutli images
- Additions:
  - Qwen-Image-Layered
  - Qwen-Image-Layered
  - Qwen-Image-Layered

### vllm-omni-api
- Source: [PR #2007](vllm-project/vllm-omni#2007) - [Bugfix]Fix bug of online server can not return mutli images
- Changes:
  - Bug fix: [Bugfix]Fix bug of online server can not return mutli images

### vllm-omni-cicd
- Source: [PR #1998](vllm-project/vllm-omni#1998) - [CI] Split BAGEL tests into dummy/real weight tiers (L2/L3)

### vllm-omni-serving
- Source: [PR #1985](vllm-project/vllm-omni#1985) - [Perf] [Qwen3-TTS] Keep audio_codes and last_talker_hidden on GPU to eliminate per-step sync stalls
- Changes:
  - Performance improvement: [Perf] [Qwen3-TTS] Keep audio_codes and last_talker_hidden on GPU to eliminate per-step sync stalls

### vllm-omni-audio-tts
- Source: [PR #1985](vllm-project/vllm-omni#1985) - [Perf] [Qwen3-TTS] Keep audio_codes and last_talker_hidden on GPU to eliminate per-step sync stalls
- Changes:
  - Performance improvement: [Perf] [Qwen3-TTS] Keep audio_codes and last_talker_hidden on GPU to eliminate per-step sync stalls

### vllm-omni-perf
- Source: [PR #1985](vllm-project/vllm-omni#1985) - [Perf] [Qwen3-TTS] Keep audio_codes and last_talker_hidden on GPU to eliminate per-step sync stalls
- Changes:
  - Performance improvement: [Perf] [Qwen3-TTS] Keep audio_codes and last_talker_hidden on GPU to eliminate per-step sync stalls

### vllm-omni-serving
- Source: [PR #1984](vllm-project/vllm-omni#1984) - [CI] [ROCm] Bugfix device environment issue
- Changes:
  - Bug fix: [CI] [ROCm] Bugfix device environment issue

### vllm-omni-api
- Source: [PR #1984](vllm-project/vllm-omni#1984) - [CI] [ROCm] Bugfix device environment issue
- Changes:
  - Bug fix: [CI] [ROCm] Bugfix device environment issue

### vllm-omni-serving
- Source: [PR #1982](vllm-project/vllm-omni#1982) - [Fix] Fix slow hasattr in CUDAGraphWrapper.__getattr__
- Changes:
  - Bug fix: [Fix] Fix slow hasattr in CUDAGraphWrapper.__getattr__

### vllm-omni-cicd
- Source: [PR #1982](vllm-project/vllm-omni#1982) - [Fix] Fix slow hasattr in CUDAGraphWrapper.__getattr__
- Changes:
  - Bug fix: [Fix] Fix slow hasattr in CUDAGraphWrapper.__getattr__

### vllm-omni-api
- Source: [PR #1979](vllm-project/vllm-omni#1979) - [Bugfix] Fix config misalignment between offline and online diffusion inference (Wan2.2, Qwen-Image series)
- Changes:
  - Bug fix: [Bugfix] Fix config misalignment between offline and online diffusion inference (Wan2.2, Qwen-Image series)
- Additions:
  - `/v1/chat/completions`

### vllm-omni-perf
- Source: [PR #1979](vllm-project/vllm-omni#1979) - [Bugfix] Fix config misalignment between offline and online diffusion inference (Wan2.2, Qwen-Image series)
- Changes:
  - Bug fix: [Bugfix] Fix config misalignment between offline and online diffusion inference (Wan2.2, Qwen-Image series)

### vllm-omni-contrib
- Source: [PR #1976](vllm-project/vllm-omni#1976) - [skip ci][Docs] Update WeChat QR code (fix filename case)
- Changes:
  - Bug fix: [skip ci][Docs] Update WeChat QR code (fix filename case)

### vllm-omni-contrib
- Source: [PR #1974](vllm-project/vllm-omni#1974) - [Docs] Update WeChat QR code for community support

### vllm-omni-cicd
- Source: [PR #1945](vllm-project/vllm-omni#1945) - Fix Base voice clone streaming quality and stop-token crash
- Changes:
  - Bug fix: Fix Base voice clone streaming quality and stop-token crash

### vllm-omni-cicd
- Source: [PR #1938](vllm-project/vllm-omni#1938) - [Test] L4 complete diffusion feature test for Bagel models
- Changes:
  - New feature: [Test] L4 complete diffusion feature test for Bagel models

### vllm-omni-perf
- Source: [PR #1938](vllm-project/vllm-omni#1938) - [Test] L4 complete diffusion feature test for Bagel models
- Changes:
  - New feature: [Test] L4 complete diffusion feature test for Bagel models

### vllm-omni-perf
- Source: [PR #1934](vllm-project/vllm-omni#1934) - Fix OmniGen2 transformer config loading for HF models
- Changes:
  - Bug fix: Fix OmniGen2 transformer config loading for HF models

### vllm-omni-audio-tts
- Source: [PR #1930](vllm-project/vllm-omni#1930) - [Bug][Qwen3TTS][Streaming] remove dynamic initial chunk and only compute on initial request

### vllm-omni-perf
- Source: [PR #1930](vllm-project/vllm-omni#1930) - [Bug][Qwen3TTS][Streaming] remove dynamic initial chunk and only compute on initial request

### vllm-omni-audio-tts
- Source: [PR #1926](vllm-project/vllm-omni#1926) - [Misc] removed qwen3_tts.py as it is out-dated

### vllm-omni-contrib
- Source: [PR #1920](vllm-project/vllm-omni#1920) - [Docs] Add Wan2.1-T2V as supported video generation models
- Changes:
  - New feature: [Docs] Add Wan2.1-T2V as supported video generation models

### vllm-omni-video-gen
- Source: [PR #1915](vllm-project/vllm-omni#1915) - [Bugfix] fix helios video generate use cpu device
- Changes:
  - Bug fix: [Bugfix] fix helios video generate use cpu device

### vllm-omni-perf
- Source: [PR #1915](vllm-project/vllm-omni#1915) - [Bugfix] fix helios video generate use cpu device
- Changes:
  - Bug fix: [Bugfix] fix helios video generate use cpu device

### vllm-omni-audio-tts
- Source: [PR #1913](vllm-project/vllm-omni#1913) - [Optim][Qwen3TTS][CodePredictor] support torch.compile with reduce-overhead and dynamic False

### vllm-omni-perf
- Source: [PR #1913](vllm-project/vllm-omni#1913) - [Optim][Qwen3TTS][CodePredictor] support torch.compile with reduce-overhead and dynamic False

### vllm-omni-api
- Source: [PR #1908](vllm-project/vllm-omni#1908) - [Entrypoint][Refactor] vLLM-Omni Entrypoint Refactoring

### vllm-omni-perf
- Source: [PR #1908](vllm-project/vllm-omni#1908) - [Entrypoint][Refactor] vLLM-Omni Entrypoint Refactoring

### vllm-omni-contrib
- Source: [PR #1908](vllm-project/vllm-omni#1908) - [Entrypoint][Refactor] vLLM-Omni Entrypoint Refactoring

### vllm-omni-serving
- Source: [PR #1908](vllm-project/vllm-omni#1908) - [Entrypoint][Refactor] vLLM-Omni Entrypoint Refactoring

### vllm-omni-cicd
- Source: [PR #1908](vllm-project/vllm-omni#1908) - [Entrypoint][Refactor] vLLM-Omni Entrypoint Refactoring

### vllm-omni-image-gen
- Source: [PR #1900](vllm-project/vllm-omni#1900) - [Feat] support HSDP for Flux family
- Changes:
  - New feature: [Feat] support HSDP for Flux family

### vllm-omni-contrib
- Source: [PR #1900](vllm-project/vllm-omni#1900) - [Feat] support HSDP for Flux family
- Changes:
  - New feature: [Feat] support HSDP for Flux family

### vllm-omni-distributed
- Source: [PR #1898](vllm-project/vllm-omni#1898) - [Feature]: Remove some useless `hf_overrides` in yaml
- Changes:
  - New feature: [Feature]: Remove some useless `hf_overrides` in yaml

### vllm-omni-quantization
- Source: [PR #1898](vllm-project/vllm-omni#1898) - [Feature]: Remove some useless `hf_overrides` in yaml
- Changes:
  - New feature: [Feature]: Remove some useless `hf_overrides` in yaml

### vllm-omni-cicd
- Source: [PR #1898](vllm-project/vllm-omni#1898) - [Feature]: Remove some useless `hf_overrides` in yaml
- Changes:
  - New feature: [Feature]: Remove some useless `hf_overrides` in yaml

### vllm-omni-perf
- Source: [PR #1898](vllm-project/vllm-omni#1898) - [Feature]: Remove some useless `hf_overrides` in yaml
- Changes:
  - New feature: [Feature]: Remove some useless `hf_overrides` in yaml

### vllm-omni-contrib
- Source: [PR #1890](vllm-project/vllm-omni#1890) - [NPU] Upgrade to v0.17.0

### vllm-omni-contrib
- Source: [PR #1889](vllm-project/vllm-omni#1889) - Add `Governance` section
- Changes:
  - New feature: Add `Governance` section

### vllm-omni-distributed
- Source: [PR #1881](vllm-project/vllm-omni#1881) - [Feat] Support T5 Tensor Parallelism
- Changes:
  - New feature: [Feat] Support T5 Tensor Parallelism

### vllm-omni-cicd
- Source: [PR #1881](vllm-project/vllm-omni#1881) - [Feat] Support T5 Tensor Parallelism
- Changes:
  - New feature: [Feat] Support T5 Tensor Parallelism
clodaghwalsh17 pushed a commit to clodaghwalsh17/nm-vllm-omni-ent that referenced this pull request May 12, 2026
…3-omni (vllm-project#2009)

Signed-off-by: Rein Yang <ruiruyang2@gmail.com>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

ready label to trigger buildkite CI

Projects

None yet

Development

Successfully merging this pull request may close these issues.

2 participants