fix: Workaround Pythia8 race condition in ttbar physmon

acts-project · Dec 7, 2024 · a6c7559 · a6c7559
1 parent 5e8efd6
commit a6c7559
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/CI/physmon/workflows/physmon_trackfinding_ttbar_pu200.py b/CI/physmon/workflows/physmon_trackfinding_ttbar_pu200.py
@@ -35,9 +35,10 @@
 
 
 with tempfile.TemporaryDirectory() as temp:
+    # Running with a single thread to avoid rance conditions with Pythia8, see https://github.com/acts-project/acts/issues/3963
     s = acts.examples.Sequencer(
         events=3,
-        numThreads=-1,
+        numThreads=1,  # run with single thread
         logLevel=acts.logging.INFO,
     )