Administrator's Guide

Configuration settings
Cluster Test provides an interface to modify the Cluster Test configuration settings. The window
displays the current configuration settings and allows you to modify any setting. You can access
the Cluster Test configuration settings dialog box from the Cluster Test toolbar: File→Config File
Settings .
This window displays the current admin and interconnect node name settings along with the range
of nodes being tested. Simply select a field and modify it to make any changes. The color of the
field will change to indicate if the updated setting is valid (green) or invalid (orange). The “Node
number range managed by this head node” setting is the range of nodes being tested when Test
this group only is selected on the Cluster Test interface. The “Node number range of the entire
cluster” setting is the range of nodes being tested when the Test this group only button is not
selected.
Both Open MPI and HP MPI may be used for the tests, provided they are installed. By default,
Open MPI is used. To use Open MPI, select File→Config File Settings... and edit the “mpirun
command” field to /usr/mpi/gcc/openmpi-<version>/bin/mpirun. Look in the /usr/
mpi/gcc file on your system to find what version number to use. You can change back to HP MPI
by changing the “mpirun command” field to /opt/hpmpi/bin/mpirun.
10 The Cluster Test GUI