This section describes the local options of the Intel® MPI Library's Hydra process manager. Local options are applied only to the argument set they are specified in. Argument sets are separated by a colon ':'.
Use this option to set the number of MPI processes to run with the current argument set.
Use this option to set the <envar> environment variable to the specified <value> for all MPI processes in the current argument set.
Use this option to propagate all environment variables in the current argument set. See the I_MPI_HYDRA_ENV environment variable for more details.
Use this option to suppress propagation of any environment variables to the MPI processes in the current argument set.
Use this option to suppress propagation of the listed environment variables to the MPI processes in the current argument set.
Use this option to pass a list of environment variables with their current values. <list> is a comma separated list of environment variables to be sent to the MPI processes.
Use this option to specify a particular <nodename> on which the MPI processes are to be run. For example, the following command executes a.out on hosts host1 and host2:
$ mpiexec.hydra -n 2 -host host1 ./a.out : -n 2 -host host2 ./a.out
Use this option to specify the path to the <executable> file to be run in the current argument set.
Use this option to specify the working directory in which the <executable> file runs in the current argument set.