QLogic OFED+ Host Software User Guide, Rev. B

5–Using Other MPIs
Managing Open MPI, MVAPICH, and QLogic MPI with the mpi-selector Utility
• Listing available MPI implementations
• Setting a default MPI to use (per user or site wide)
• Unsetting a default MPI to use (per user or site wide)
• Querying the current default MPI in use
Following is an example for listing and selecting an MPI:
$ mpi-selector --list
mpi-1.2.3
mpi-3.4.5
$ mpi-selector --set mpi-3.4.5
The new default take effect in the next shell that is started. See the
mpi-selector man page for more information.
For QLogic MPI inter-operation with the mpi-selector utility, you must install all
QLogic MPI RPMs using a prefixed installation. Once the $prefix for QLogic
MPI has been determined, install the qlogic-mpi-register with the same
$prefix, this registers QLogic MPI with the mpi-selector utility and shows
QLogic MPI as an available MPI implementation with the four different compilers.
See the QLogic Fabric Software Installation Guide for information on prefixed
installations.
The example shell scripts mpivars.sh and mpivars.csh, for registering with
mpi-selector, are provided as part of the mpi-devel RPM in
$prefix/share/mpich/mpi-selector-{intel,gnu,pathscale,pgi}
directories.
For all non-GNU compilers that are installed outside standard Linux search paths,
set up the paths so that compiler binaries and runtime libraries can be resolved.
For example, set LD_LIBRARY_PATH, both in your local environment and in an rc
file (such as .mpirunrc, .bashrc, or .cshrc), are invoked on remote nodes.
See “Environment for Node Programs” on page 4-19 and “Compiler and Linker
Variables” on page 4-10 for information on setting up the environment and
“Specifying the Run-time Library Path” on page F-15 for information on setting the
run-time library path. Also see “Run Time Errors with Different MPI
Implementations” on page F-17 for information on run time errors that may occur if
there are MPI version mismatches.
NOTE:
The Intel-compiled versions require that the Intel compiler be installed and
that paths to the Intel compiler runtime libraries be resolvable from the user’s
environment. The version used is Intel 10.1.012.
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