Parallel shell tool

ParaStation MPI provides a parallel shell tool called psh, which allows to run commands on all or selected nodes of the cluster in parallel. The output of the individual commands is presented in a sophisticated manner, showing common parts and differences.

psh may also be used to copy files to all nodes of the cluster in parallel.

This command is not intended to run interactive commands in parallel, but to run a single task in parallel on all or a bunch of nodes and prepare the output to be easily read by the user.