if I use gpu to train,How can I best set these three environment variables?

[shenghansen]

when i use gpu to train ,I met the warning below，How can I best set these three environment variables?

WARNING:root:To get the best performance, it is recommended to adjust the number of threads by setting the environment variables OMP_NUM_THREADS, TF_INTRA_OP_PARALLELISM_THREADS, and TF_INTER_OP_PARALLELISM_THREADS.

[shenghansen]

I know this three environment variables mean,but i don't know how to set them to get the best performance if i use gpu ,should I set OMP_NUM_THREADS=4 if i have 4 gpus,then how to set TF_INTRA_OP_PARALLELISM_THREADS, and TF_INTER_OP_PARALLELISM_THREADS.I really need your help,please.

[njzjz]

It's unclear unless you compare on your machine.