Skip to content

[Fix] Disable FlashInfer allreduce fusion under deterministic inference #24629

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
Jiminator merged 2 commits into from
May 11, 2026
Merged

[Fix] Disable FlashInfer allreduce fusion under deterministic inference #24629

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
bb6e82b
Disable FlashInfer allreduce fusion under deterministic inference
Jiminator May 7, 2026
cf4d7f8
Address gemini-code-assist review feedback
Jiminator May 8, 2026
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: 7 additions & 0 deletions python/sglang/srt/server_args.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4020,6 +4020,13 @@ def _handle_deterministic_inference(self):
)
self.enable_aiter_allreduce_fusion = False

if self.enable_flashinfer_allreduce_fusion:
logger.warning(
"Disable enable_flashinfer_allreduce_fusion because deterministic inference is enabled."
Comment thread
Jiminator marked this conversation as resolved.
Outdated
)
self.enable_flashinfer_allreduce_fusion = False
self.enforce_disable_flashinfer_allreduce_fusion = True
Comment thread
Jiminator marked this conversation as resolved.
Outdated

# Check sampling backend
self.sampling_backend = "pytorch"
logger.warning(
Expand Down
Loading