Add: dispatch MPI worker groups through mailbox - #1624

Add: dispatch MPI worker groups through mailbox#1624

sunkaixuan2018 wants to merge 2 commits into

hw-native-sys:mainhw-native-sys/simpler:mainfrom

sunkaixuan2018:use-mpi-and-remove-socketsunkaixuan2018/simpler-PTO:use-mpi-and-remove-socketCopy head branch name to clipboard