add multi-card for run_eval dataloader

train.py

@@ -165,17 +165,17 @@ def train(args):
             augment=False,
             rect=args.rect,
             single_cls=args.single_cls,
-            batch_size=args.per_batch_size * 2,
+            batch_size=args.per_batch_size,
             stride=max(args.network.stride),
         )
         eval_dataloader = create_loader(
             dataset=eval_dataset,
             batch_collate_fn=eval_dataset.test_collate_fn,
             dataset_column_names=eval_dataset.dataset_column_names,
-            batch_size=args.per_batch_size * 2,
+            batch_size=args.per_batch_size,
             epoch_size=1,
-            rank=0,
-            rank_size=1,
+            rank=args.rank,
+            rank_size=args.rank_size,
             shuffle=False,
             drop_remainder=False,
             num_parallel_workers=args.data.num_parallel_workers,