Skip to content

[BUG FIX][NON-CUDA]quick fix to avoid call cudagraph_unsafe in attention #25298

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
merged 3 commits into from
Sep 20, 2025
Merged

[BUG FIX][NON-CUDA]quick fix to avoid call cudagraph_unsafe in attention #25298

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
d2a0be6
quick fix
xuechendi Sep 20, 2025
4b71b09
Take advice from gemini
xuechendi Sep 20, 2025
f057dca
Fix for mypy
xuechendi Sep 20, 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
8 changes: 6 additions & 2 deletions vllm/attention/layer.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,10 @@

logger = init_logger(__name__)
USE_XFORMERS_OPS = None
try:
tag_cudagraph_unsafe = (torch._C.Tag.cudagraph_unsafe, )
except AttributeError:
tag_cudagraph_unsafe = () # type: ignore[assignment]


def check_xformers_availability():
Expand Down Expand Up @@ -577,7 +581,7 @@ def unified_attention_fake(
mutates_args=[],
fake_impl=unified_attention_fake,
dispatch_key=current_platform.dispatch_key,
tags=(torch._C.Tag.cudagraph_unsafe, ),
tags=tag_cudagraph_unsafe,
)


Expand Down Expand Up @@ -628,5 +632,5 @@ def unified_attention_with_output_fake(
mutates_args=["output", "output_block_scale"],
fake_impl=unified_attention_with_output_fake,
dispatch_key=current_platform.dispatch_key,
tags=(torch._C.Tag.cudagraph_unsafe, ),
tags=tag_cudagraph_unsafe,
)