DouPiChen

Results 2 issues of DouPiChen

### ❓ The question When I run ``` torchrun --nproc_per_node=8 scripts/train.py configs/official/OLMo-1B.yaml```, I got OlmoConfigurationError: FileNotFoundError raised while resolving interpolation: no_exist/checkpoints, /results full_key: save_folder object_type=TrainConfig

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### ❓ The question When I run ``` torchrun --nproc_per_node=4 scripts/train.py configs/official/OLMo-1B.yaml ```, I get the ConnectionRefusedError as follows I have changed url in OLMo-1B.yaml as

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