Set default number of nodes to 1

We put default number of nodes to 1 in particular so that the linear evaluation with 8 GPUs has a global batch size of 1024, to reproduce the results.

dinov2/run/submit.py

@@ -45,7 +45,7 @@ def get_args_parser(
     parser.add_argument(
         "--nodes",
         "--nnodes",
-        default=2,
+        default=1,
         type=int,
         help="Number of nodes to request",
     )