fix the wrong GPU index issue of multi-node

configs/metadata.json

@@ -1,7 +1,8 @@
 {
     "schema": "https://github.com/Project-MONAI/MONAI-extra-test-data/releases/download/0.8.1/meta_schema_hovernet_20221124.json",
-    "version": "0.2.0",
+    "version": "0.2.1",
     "changelog": {
+        "0.2.1": "fix the wrong GPU index issue of multi-node",
         "0.2.0": "Update README for how to download dataset",
         "0.1.9": "add RAM warning",
         "0.1.8": "Update README for pretrained weights and save metrics in evaluate",
@@ -14,7 +15,7 @@
         "0.1.1": "update to use monai 1.1.0",
         "0.1.0": "complete the model package"
     },
-    "monai_version": "1.2.0rc6",
+    "monai_version": "1.2.0",
     "pytorch_version": "1.13.1",
     "numpy_version": "1.22.2",
     "optional_packages_version": {

configs/multi_gpu_train.json

@@ -1,5 +1,5 @@
 {
-    "device": "$torch.device(f'cuda:{dist.get_rank()}')",
+    "device": "$torch.device('cuda:' + os.environ['LOCAL_RANK'])",
     "network": {
         "_target_": "torch.nn.parallel.DistributedDataParallel",
         "module": "$@network_def.to(@device)",