AssertionError: Default process group is not initialized

shinya7y / UniverseNet

USB: Universal-Scale Object Detection Benchmark (BMVC 2022)

Apache License 2.0

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AssertionError: Default process group is not initialized #8

Closed iampartho closed 4 years ago

iampartho commented 4 years ago

I got this error while trying to train this model, I have also trained this and this model before without this or any errors. Anyone could help me debug it. I am using google colab by modifying this notebook. Thanks.

shinya7y commented 4 years ago

The cause may be SyncBN used in this file.

SyncBN only works with distributed environment, you may either use tools/dist_test.sh or modify SyncBN to BN manually during testing. https://github.com/open-mmlab/mmdetection/issues/847#issuecomment-504421173

iampartho commented 4 years ago

Thanks for the clarifications, I could start the training without the error by changing it from "SyncBN" to "BN". Closing the issue.