Error -> Warn on non-deterministic ops (#3613)

ultralytics/yolo/utils/torch_utils.py

@@ -319,9 +319,9 @@ def init_seeds(seed=0, deterministic=False):
     torch.cuda.manual_seed(seed)
     torch.cuda.manual_seed_all(seed)  # for Multi-GPU, exception safe
     # torch.backends.cudnn.benchmark = True  # AutoBatch problem https://github.com/ultralytics/yolov5/issues/9287
-    if deterministic:  # https://github.com/ultralytics/yolov5/pull/8213
+    if deterministic:
         if TORCH_2_0:
-            torch.use_deterministic_algorithms(True)
+            torch.use_deterministic_algorithms(True, warn_only=True)  # warn if deterministic is not possible
             torch.backends.cudnn.deterministic = True
             os.environ['CUBLAS_WORKSPACE_CONFIG'] = ':4096:8'
             os.environ['PYTHONHASHSEED'] = str(seed)