How to get the process pid in docker？

[xianjiez]

I get the process pid in docker through nvmlDeviceGetComputeRunningProcesses(), which is the process pid on the host machine, but this is different from the process pid in docker. Is there a way to get the process pid in docker instead of the pid on the host machine?

[fostiropoulos]

You would need to run docker with the option --pid host to be able to get the process id, as the host machine and container must share PID space. There are caveats when the host and docker machine OS differ.