Do not makedir when there is no dir

scripts/compute_metrics.py

@@ -10,7 +10,8 @@ def main(data_dir: str, out_file: str) -> None:
     model_names = os.listdir(data_dir)
     print(f"{model_names=}")
 
-    os.makedirs(os.path.dirname(out_file), exist_ok=True)
+    if dirname := os.path.dirname(out_file):
+        os.makedirs(dirname, exist_ok=True)
     out_csv = csv.writer(open(out_file, "w", newline=""))
     metrics = ["throughput", "response_length", "latency", "energy"]
     out_csv.writerow(["model"] + metrics)