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mpiexec.hydra
Launches an MPI job using the Hydra process manager.
Syntax
mpiexec <g-options> <l-options> <executable>
or
mpiexec <g-options> <l-options> <executable1> : <l-options> <executable2>
Arguments
| <g-options> | Global options that apply to all MPI processes |
| <l-options> | Local options that apply to a single argument set |
| <executable> | <name>.exe or path \name of the executable file |
Description
Use the mpiexec utility to run MPI applications using the Hydra process manager.
Use the first short command-line syntax to start all MPI processes of the <executable> with the single set of arguments. For example, the following command executes test.exe over the specified processes and hosts:
> mpiexec -f <hostfile> -n <# of processes> test.exe
where:
<# of processes> specifies the number of processes on which to run the test.exe executable
<hostfile> specifies a list of hosts on which to run the test.exe executable
Use the second long command-line syntax to set different argument sets for different MPI program runs. For example, the following command executes two different binaries with different argument sets:
> mpiexec -f <hostfile> -env <VAR1> <VAL1> -n 2 prog1.exe : ^ -env <VAR2> <VAL2> -n 2 prog2.exe
NOTE:
You need to distinguish global options from local options. In a command-line syntax, place the local options after the global options.
Parent topic: Command Reference