ERROR:root:Please check your network connection. Or download the model manually from https://github.com/Peterande/storage/releases/download/dfinev1.0/PPHGNetV2_B0_stage1.pth to ../RT-DETR-main/D-FINE/weight/hgnetv2/. Default process group has not been initialized, please make sure to call init_process_group.
时间: 2025-09-04 19:04:53 AIGC 浏览: 33
### 解决网络连接错误并手动下载模型
当遇到网络连接错误时,手动下载模型是一个可行的解决方案。可以按照以下步骤操作:
1. 直接在浏览器中打开链接 `https://github.com/Peterande/storage/releases/download/dfinev1.0/PPHGNetV2_B0_stage1.pth`,如果可以正常访问,将模型文件下载到本地。
2. 将下载好的 `PPHGNetV2_B0_stage1.pth` 文件手动复制到 `../RT - DETR-main/D - FINE/weight/hgnetv2/` 路径下。
### 解决 Default process group 未初始化问题
要解决 `Default process group` 未初始化的问题,需要调用 `init_process_group` 函数。以下是一个简单的代码示例,展示如何调用该函数:
```python
import torch.distributed as dist
import torch.multiprocessing as mp
def setup(rank, world_size):
os.environ['MASTER_ADDR'] = 'localhost'
os.environ['MASTER_PORT'] = '12355'
# initialize the process group
dist.init_process_group("nccl", rank=rank, world_size=world_size)
def run(rank, world_size):
setup(rank, world_size)
# 这里可以添加你的模型加载和训练代码
# 例如:
# model = ...
# model.to(rank)
# model = DDP(model, device_ids=[rank])
if __name__ == "__main__":
world_size = 4 # 根据实际情况设置进程数量
mp.spawn(run, args=(world_size,), nprocs=world_size, join=True)
```
在上述代码中,`setup` 函数用于初始化进程组,`run` 函数是每个进程要执行的任务。`mp.spawn` 用于启动多个进程。
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