Update space

app.py

@@ -649,6 +649,7 @@ def process_submission(
 ):
     """Process submission with progress updates"""
     temp_files = []
+    start_time = time.time()
     try:
         # 1. Initial validation
         yield "Validating submission details..."
@@ -684,7 +685,7 @@ def process_submission(
             csv_path=temp_csv_path,
             dataset=dataset.lower(),
             split=split,
-            num_workers=4
+            num_threads=4
         )
         
         if isinstance(results, str):