How to set the specified GPU and set the number of GPUs in tools/train.py or the corresponding configuration file?

[WinnerMeat]

How to set the specified GPU and set the number of GPUs in tools/train.py or the corresponding configuration file?
Is there a corresponding setting parameter, similar to gpu_num and the like.

[MrRaptorious]

You can set the specified GPU with CUDA_VISIBLE_DEVICES before calling your script.

I am currently also struggling to run the training on multiple GPUs while NOT using the distributed script because I dont have permissions on those things the script does.

Do you have any advice on how to run your model on multiple gpus?