Update app.py

app.py

@@ -10,6 +10,7 @@ from concurrent.futures import ProcessPoolExecutor, as_completed, wait, FIRST_CO
 from datetime import datetime
 from typing import Any, Dict, List, Tuple
 from warnings import warn
+import gc
 
 import numpy as np
 
@@ -176,7 +177,12 @@ def evaluate(
                 result = future.result()
                 remainings.remove(result["_identifier"])
                 eval_results[result["task_id"]].append(result)
+                del future, result
+                gc.collect()
 
+        del problems, futures
+        gc.collect()
+        
         # sort the results for each problem by completion_id
         for task_id, task_results in eval_results.items():
             task_results.sort(key=lambda x: x["completion_id"])