fix multithreading bug

Bench: 5011790
Adam-Kulju · Jan 22, 2025 · d99c110 · d99c110
1 parent bf65524
commit d99c110
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/engine/src/search.h b/engine/src/search.h
@@ -1137,7 +1137,9 @@ void iterative_deepen(
 finish:
   // wait for all threads to finish searching
   // printf("%i\n", thread_info.thread_id);
-  thread_data.stop = true;
+  if (thread_info.thread_id == 0){
+    thread_data.stop = true;
+  }
   search_end_barrier.arrive_and_wait();
   if (thread_info.thread_id == 0 && !thread_info.doing_datagen &&
       !thread_info.is_human) {