Alex Yang

Hi,could you paste all error report?

Hmm,actually it seems that the fault trace stack doesn't give any information for `mmcv` though. In fact,you can assure you install `mmcv_full` correctly and the version of `mmcv_full` is on...

> 1, running command: bash scripts/dist_train.sh 0,1,3,4,5,6,7 configs/base_nir/deeplabv3plus_r101.py 2, training config is too complex. ok,but pasting training config may help us locate the poetential bugs,and paste it may help solve...

@FuNian788 @ywdong hi, can you paste your training config?

This may be related to #1949 , so may @teamwong111 and @grimoire can help.

Thanks for your contribution.I add a ref link,which explain `subprocess.check_output`.

maybe need to fix some lint @TimDarcet

> maybe need to fix some lint @TimDarcet I change it anyway.

Yes I think so.Just like what you've said,it's about number of `optimize_iter_steps`.But for epoch based method like `EpochBasedRunner` in mmcv,I don't think more epochs need to be added,since in one...

> pytest tests/test_runner/test_dist_utils.py::test_init_dist -s -v > > ``` > FAILED tests/test_runner/test_dist_utils.py::test_init_dist - socket.gaierror: [Errno -2] Name or service not known > ``` This is probably caused by /etc/hosts not properly...