Q-Logic IB0056101-00 G manual Installing Lustre, Installing QLogic MPI in an Alternate Location

5 – Software Installation Additional Installation Instructions

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Installing Lustre

This InfiniPath release supports Lustre. Lustre is a fast, scalable Linux cluster file system that interoperates with InfiniBand. To use Lustre, you need:

„A Linux kernel that is one of the supported kernels for this release, patched with Lustre-specific patches

„Lustre modules compiled for the above kernel

„Lustre utilities required for configuration

The InfiniPath Release Notes provide information about the Lustre patches. For general instructions on downloading, installing, and using Lustre, go to: http://www.lustre.org.

Installing QLogic MPI in an Alternate Location

QLogic MPI can be installed in an alternate installation location by using the --prefixoption with rpm. This option is useful for installations that support multiple concurrent MPIs, for other site-specific requirements, or for smooth integration of QLogic MPI with mpi-selector.

The mpi-selectorutility and QLogic MPI mpi-selectorregistration are provided by RPMs in the OtherMPIs directory.

When this option is used, the argument passed to --prefixreplaces the default /usr prefix: QLogic MPI binaries, documentation, and libraries are installed under that prefix. However, a few configuration files are installed in /etc regardless of the desired --prefix.

Additionally, installations that are maintained in alternate locations must ensure that the environment variable $MPICH_ROOT is always set to the same prefix that was used to install the RPMs with the --prefixoption. When set, the $MPICH_ROOT variable allows QLogic MPI to correctly locate header and library files for MPI compilation and running parallel jobs.

NOTE:

In InfiniPath 2.2, $MPICH_ROOT replaces the environment variable $INFINIPATH_ROOT, which is now deprecated. In InfiniPath 2.1, $INFINIPATH_ROOT assumed an RPM install --prefixof $INFINIPATH_ROOT/usr.

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