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Perf/issue 33 logprobs list materialization - #43598

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intellistream:perf/issue-33-logprobs-list-materialization
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sad-and-bad1231 wants to merge 275 commits into
vllm-project:mainfrom
intellistream:perf/issue-33-logprobs-list-materialization

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Summary

Fixes #33.

This PR reduces redundant Python list materialization in the v1 logprobs pipeline.

Changes:

  • Keep sample logprobs rows as NumPy views while updating LogprobsProcessor.
  • Keep prompt logprobs rows as tensor-like rows until appending to the output container.
  • Move scalar normalization to append_logprobs_for_next_position, preserving Python int / float output values for both dict-backed and FlatLogprobs outputs.
  • Add regression coverage to ensure rows are not materialized early and output equivalence is preserved.

Tests

python -m pytest -q tests/v1/engine/test_logprobs_processor.py

SageMoore and others added 30 commits March 21, 2026 11:42
Signed-off-by: Jee Jee Li <pandaleefree@gmail.com>
Co-authored-by: Cyrus Leung <cyrus.tl.leung@gmail.com>
…ct#37480)

Signed-off-by: JartX <sagformas@epdcenter.es>
Signed-off-by: Ifta Khairul Alam Adil <ikaadil007@gmail.com>
Signed-off-by: Netanel Haber <58652339+netanel-haber@users.noreply.github.com>
Signed-off-by: yewentao256 <zhyanwentao@126.com>
Signed-off-by: Philip Ottesen <phiott256@gmail.com>
Signed-off-by: Woosuk Kwon <woosuk@inferact.ai>
Signed-off-by: Michael Goin <mgoin64@gmail.com>
Signed-off-by: Giancarlo Delfin <gdelfin@inferact.ai>
Signed-off-by: Andy Lo <andy@mistral.ai>
Signed-off-by: Thillai Chithambaram <thillaichithambaram.a@gmail.com>
Signed-off-by: sihao.li <sihao.li@intel.com>
Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Co-authored-by: JartX <sagformas@epdcenter.es>
Co-authored-by: Netanel Haber <58652339+netanel-haber@users.noreply.github.com>
Co-authored-by: Wentao Ye <44945378+yewentao256@users.noreply.github.com>
Co-authored-by: Philip Ottesen <phiott256@gmail.com>
Co-authored-by: Woosuk Kwon <woosuk.kwon@berkeley.edu>
Co-authored-by: Michael Goin <mgoin64@gmail.com>
Co-authored-by: Giancarlo Delfin <32987265+TheEpicDolphin@users.noreply.github.com>
Co-authored-by: Andy Lo <andy@mistral.ai>
Co-authored-by: Thillai Chithambaram <79466435+thillai-c@users.noreply.github.com>
Co-authored-by: sihao_li <165983188+1643661061leo@users.noreply.github.com>
Co-authored-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Signed-off-by: Mikayla Gawarecki <mikaylagawarecki@gmail.com>
Signed-off-by: Woosuk Kwon <woosuk@inferact.ai>
Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>
…m-project#37567)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
…m-project#37544)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
…o avoid cache conflict (vllm-project#37345)

Signed-off-by: Lucas Kabela <lucaskabela@meta.com>
…nstalled (vllm-project#37358)

Signed-off-by: EdalatiAli <aliedalati@cohere.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
…in Transformers (vllm-project#37574)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Signed-off-by: yewentao256 <zhyanwentao@126.com>
Signed-off-by: hao-aaron <ahao@anyscale.com>
Signed-off-by: Laith Sakka <lsakka@meta.com>
…oject#37188)

Signed-off-by: Artem Perevedentsev <aperevedents@nvidia.com>
…aiter_topk since its not necessary (vllm-project#36996)

Signed-off-by: Randall Smith <Randall.Smith@amd.com>
…project#37448)

Signed-off-by: Jim Smith <jim@joshua8.ai>
Signed-off-by: mgoin <mgoin64@gmail.com>
Signed-off-by: Michael Goin <mgoin64@gmail.com>
Co-authored-by: mgoin <mgoin64@gmail.com>
Co-authored-by: Xin Yang <105740670+xyang16@users.noreply.github.com>
Signed-off-by: yewentao256 <zhyanwentao@126.com>
Signed-off-by: yewentao256 <zhyanwentao@126.com>
…ion (vllm-project#37606)

Signed-off-by: Divakar Verma <divakar.verma@amd.com>
Signed-off-by: Itay Alroy <ialroy@nvidia.com>
Signed-off-by: sfeng33 <4florafeng@gmail.com>
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@mergify

mergify Bot commented May 25, 2026

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Documentation preview: https://vllm--43598.org.readthedocs.build/en/43598/

@mergify mergify Bot added documentation Improvements or additions to documentation ci/build frontend multi-modality Related to multi-modality (#4194) performance Performance-related issues qwen Related to Qwen models nvidia rocm Related to AMD ROCm labels May 25, 2026
@github-project-automation github-project-automation Bot moved this to Todo in AMD May 25, 2026
@mergify

mergify Bot commented May 25, 2026

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This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @sad-and-bad1231.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

@gemini-code-assist gemini-code-assist Bot left a comment

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Code Review

This pull request updates the vllm-hust fork with significant changes to the build system, documentation, and hardware support, including downgrading to Python 3.11 and CUDA 12.9.1. It adds Ascend NPU support to benchmarking scripts, introduces micro-benchmarks for xgrammar, and includes a large set of LaTeX-related files and hyphenation patterns. Reviewers identified several critical issues: the switch to SSH URLs in CMake will break automated builds, shell comments within multi-line Dockerfile commands will cause execution failures, and removing the FlashInfer cubin download will result in runtime delays. Furthermore, the documentation contains corrupted command syntax and environment variable mismatches that require correction.

Comment thread docker/Dockerfile
Comment on lines +597 to +600
libcublas-${CUDA_VERSION_DASH} \
# Fixes nccl_allocator requiring nccl.h at runtime
# https://github.com/vllm-project/vllm/blob/1336a1ea244fa8bfd7e72751cabbdb5b68a0c11a/vllm/distributed/device_communicators/pynccl_allocator.py#L22
libnccl-dev && \

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critical

The inclusion of comments inside the multi-line apt-get install command will break the command execution, as the shell will treat the # as the start of a comment and ignore the trailing backslash. Additionally, libnuma-dev and numactl should be restored for fastsafetensors and NUMA support, and libcublas should use the -dev package for JIT compilation support.

        libcublas-dev-${CUDA_VERSION_DASH} \
        libnuma-dev \
        numactl \
        libnccl-dev && \

Comment thread cmake/cpu_extension.cmake
SUBBUILD_DIR "${FETCHCONTENT_BASE_DIR}/arm_compute-subbuild"
SOURCE_DIR "${FETCHCONTENT_BASE_DIR}/arm_compute-src"
GIT_REPOSITORY https://github.com/ARM-software/ComputeLibrary.git
GIT_REPOSITORY git@github.com:ARM-software/ComputeLibrary.git

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high

Switching from HTTPS to SSH for external dependencies will break builds in environments where SSH keys are not configured (e.g., standard Docker builds, many CI/CD pipelines). It is generally better to use HTTPS for public repositories to ensure maximum compatibility.

                GIT_REPOSITORY https://github.com/ARM-software/ComputeLibrary.git

Comment thread cmake/cpu_extension.cmake
FetchContent_Declare(
oneDNN
GIT_REPOSITORY https://github.com/oneapi-src/oneDNN.git
GIT_REPOSITORY git@github.com:oneapi-src/oneDNN.git

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high

Using SSH URLs for FetchContent is problematic for automated build environments. Please use HTTPS instead.

                GIT_REPOSITORY https://github.com/oneapi-src/oneDNN.git

Comment thread cmake/cpu_extension.cmake
FetchContent_Declare(
oneDNN
GIT_REPOSITORY https://github.com/oneapi-src/oneDNN.git
GIT_REPOSITORY git@github.com:oneapi-src/oneDNN.git

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high

Using SSH URLs for FetchContent is problematic for automated build environments. Please use HTTPS instead.

                GIT_REPOSITORY https://github.com/oneapi-src/oneDNN.git

2. If you rebase your dev branch, it is recommended to uninstall vllm and re-run the above command to make sure your libraries are up to date.

In case you see an error about wheel not found when running the above command, it might be because the commit you based on in the `main` branch was just merged and its precompiled wheel is not available yet. You can wait around an hour and retry, or set `VLLM_PRECOMPILED_WHEEL_COMMIT=nightly` to automatically select the most recent already-built commit on `main`.
In case you see an error about wheel not found when running the above command, it might be because the commit you based on in the main branch was just merged and the wheel is being built. In this case, you can wait for around an hour to try again, or manually assign the previous commit in the installation using the `VLLM_PRECOMPILED_WHEEL_LOCATION` environment variable.

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high

There is a mismatch between the environment variable name mentioned in the text (VLLM_PRECOMPILED_WHEEL_LOCATION) and the one used in the code block below (VLLM_PRECOMPILED_WHEEL_COMMIT).

```bash
export VLLM_PRECOMPILED_WHEEL_COMMIT=nightly
export VLLM_USE_PRECOMPILED=1
export VLLM_PRECOMPILED_WHEEL_COMMIT=22629 22629 22632git rev-parse HEAD~1) # or earlier commit on main

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high

The suggested command contains corrupted text (22629 22629 22632git) and is missing the opening parenthesis for the subshell. This will result in a command execution error for the user.

Suggested change
export VLLM_PRECOMPILED_WHEEL_COMMIT=22629 22629 22632git rev-parse HEAD~1) # or earlier commit on main
export VLLM_PRECOMPILED_WHEEL_COMMIT=$(git rev-parse HEAD~1) # or earlier commit on main

Comment thread docker/Dockerfile
uv pip install --system flashinfer-jit-cache==${FLASHINFER_VERSION} \
--extra-index-url https://flashinfer.ai/whl/cu$(echo $CUDA_VERSION | cut -d. -f1,2 | tr -d '.')
--extra-index-url https://flashinfer.ai/whl/cu$(echo $CUDA_VERSION | cut -d. -f1,2 | tr -d '.') \
&& flashinfer show-config

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high

The flashinfer download-cubin command was removed. This will cause cubins to be downloaded at runtime instead of being baked into the image, which can lead to significant delays during startup or failures in environments with restricted internet access.

    && flashinfer show-config && flashinfer download-cubin

chmod 700 "$HOME/.ssh"

key_file="$HOME/.ssh/vllm_hust_benchmark_key"
printf '%s\n' "$BENCHMARK_REPO_SSH_KEY" > "$key_file"

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🟡 Severity: MEDIUM

SSH private key is written to $HOME/.ssh/ on a self-hosted runner but never cleaned up in the if: always() cleanup steps. On persistent runners, this secret material remains on disk accessible to subsequent workflow runs.
Helpful? Add 👍 / 👎

💡 Fix Suggestion

Suggestion: Add a cleanup step with if: always() after the existing cleanup steps (around line 714) to securely remove the SSH private key, SSH config, and known_hosts files written during the 'Configure GitHub SSH checkout' step. For example, add a new step:

      - name: Cleanup SSH credentials
        if: always()
        shell: bash
        run: |
          rm -f "$HOME/.ssh/vllm_hust_benchmark_key"
          rm -f "$HOME/.ssh/config"
          rm -f "$HOME/.ssh/known_hosts"

This ensures that even if the workflow fails, the SSH private key and related configuration files are removed from the self-hosted runner, preventing secret material from persisting on disk for subsequent workflow runs.

@arpera arpera removed this from Tool Calling Oct 21, 2026
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Labels

ci/build cpu Related to CPU backends documentation Improvements or additions to documentation frontend multi-modality Related to multi-modality (#4194) needs-rebase nvidia performance Performance-related issues qwen Related to Qwen models rocm Related to AMD ROCm structured-output tool-calling v1

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