When running applications with ParaStation MPI, some differences to ParaStation4 must be observed.
First of all, jobs must be started using the new mpiexec command. Refer to mpiexec(8) for options and details.
The former mpirun command is no longer
supported! If it is still available, due to an ParaStation4
mpich-ps4 package still installed, this
command will not run executables compiled and linked with
In addition, jobs may no longer be started by running the executable, like
$ ./myprog …
Use the mpiexec command instead!
Executables linked with ParaStation4 can be run using the new
In this case, the option
--bnr is required.
The environment variable
PSP_P4SOCK was renamed
PSP_P4S, but still recognized.
Within this version of ParaStation MPI, both names may be used.
Likewise, The environment variable
was renamed to
PSP_SHM, but also still recognized.