Yiyong, See info here on MPIEXEC_PORT_RANGE environment setting. https://wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager#Envir... Ken On 01/05/2016 08:20 PM, Yiyong wrote:

Yes, Docker is like a VM and it has private IP address. It can use nat to communicate with other host. I need to map some ports of Docker to that of host machine, then dockers in different host machines can use the ports to communicate.

Yiyong

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