Skip to content

[XPU] decrease IGC_ForceOCLSIMDWidth for speculative decoding triton-xpu kernel compilation #30538

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
jikunshang merged 3 commits into from
Dec 23, 2025
+10 −3
Merged

[XPU] decrease IGC_ForceOCLSIMDWidth for speculative decoding triton-xpu kernel compilation #30538

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
7cafe4d
decrease triton kernel compilation scratch space for speculative deco…
yma11 Dec 12, 2025
a9f2a16
address comments
yma11 Dec 22, 2025
ae350cd
update
yma11 Dec 23, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 6 additions & 1 deletion docker/Dockerfile.xpu
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@ FROM intel/deep-learning-essentials:2025.2.2-0-devel-ubuntu24.04 AS vllm-base

RUN wget -O- https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB | gpg --dearmor | tee /usr/share/keyrings/oneapi-archive-keyring.gpg > /dev/null && \
echo "deb [signed-by=/usr/share/keyrings/oneapi-archive-keyring.gpg] https://apt.repos.intel.com/oneapi all main" | tee /etc/apt/sources.list.d/oneAPI.list && \
add-apt-repository -y ppa:kobuk-team/intel-graphics
add-apt-repository -y ppa:kobuk-team/intel-graphics-staging

RUN apt clean && apt-get update -y && \
apt-get install -y --no-install-recommends --fix-missing \
Expand Down Expand Up @@ -47,6 +47,11 @@ RUN --mount=type=cache,target=/root/.cache/pip \
pip install --no-cache-dir \
-r requirements/xpu.txt

# arctic-inference is built from source which needs torch-xpu properly installed
# used for suffix method speculative decoding
RUN --mount=type=cache,target=/root/.cache/pip \
pip install --no-cache-dir arctic-inference==0.1.1

ENV LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib/"

COPY . .
Expand Down
2 changes: 1 addition & 1 deletion docs/features/README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -64,7 +64,7 @@ th:not(:first-child) {
| [CP](../configuration/optimization.md#chunked-prefill) | [❌](https://github.com/vllm-project/vllm/issues/2729) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| [APC](automatic_prefix_caching.md) | [❌](https://github.com/vllm-project/vllm/issues/3687) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| [LoRA](lora.md) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| [SD](spec_decode.md) | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ✅ | [🟠](https://github.com/vllm-project/vllm/issues/26963) |
| [SD](spec_decode.md) | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ✅ | ✅ |
| CUDA graph | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ✅ | [❌](https://github.com/vllm-project/vllm/issues/26970) |
| [pooling](../models/pooling_models.md) | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| <abbr title="Encoder-Decoder Models">enc-dec</abbr> | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ✅ |
Expand Down
4 changes: 3 additions & 1 deletion vllm/platforms/xpu.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -156,7 +156,9 @@ def check_and_update_config(cls, vllm_config: VllmConfig) -> None:

if vllm_config.lora_config is not None:
compilation_config.mode = CompilationMode.NONE

# decrease triton kernel compilation scratch space for speculative decoding
if vllm_config.speculative_config is not None:
os.environ["IGC_ForceOCLSIMDWidth"] = "16" # noqa: SIM112
# check and update parallel config
parallel_config = vllm_config.parallel_config
# Only override worker_cls if it's still the default "auto"
Expand Down