Vscode DeBug: RuntimeError: Default process group has not been initialized-优快云博客

背景

大家在使用Vscode Debug 代码时，会由于一些代码没有适配单机单卡而导致无法直接使用Vscode Debug，转而使用pdb方法，这样的效率会相对较低，本文章使用分布式debug，相同远离可以进行单机单卡debug，便于大家找到问题

解决办法如下

调整launch.json，如下，改成分布式debug即可

{
    // 使用 IntelliSense 了解相关属性。 
    // 悬停以查看现有属性的描述。
    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Python: train",
            "type": "python",
            "request": "launch",
            "program": "/root/miniconda3/envs/toponet/lib/python3.8/site-packages/torch/distributed/run.py",
            "console": "integratedTerminal",
            "justMyCode": false,
            "args": [
                    "--nproc_per_node", "1",
                    "tools/train.py", "projects/configs/toponet_r50_8x1_24e_olv2_subset_A.py",
                    "--launcher", "pytorch",
                    "--work-dir", "work_dirs/toponet"]
        },
        {
            "name": "Python: eval",
            "type": "python",
            "request": "launch",
            "program": "/root/miniconda3/envs/toponet/lib/python3.8/site-packages/torch/distributed/run.py",
            "console": "integratedTerminal",
            "justMyCode": false,
            "args": [
                    "--nproc_per_node", "1",
                    "tools/test.py", "projects/configs/toponet_r50_8x1_24e_olv2_subset_A.py", "toponet_r50_8x1_24e_olv2_subset_A.pth",
                    "--launcher", "pytorch",
                    "--out-dir", "work_dirs/test",
                    "--eval", "openlane_v2", "--show"]
        }
    ]
}