HP XC System Software Installation Guide Version 4.0

7 Finalizing the Configuration
This chapter describes postconfiguration tasks that you might have to complete depending upon
the software and hardware configuration:
• “Finalizing the Configuration of Compute Resources” (page 123)
• “Enabling SSH for the InfiniBand Interconnect” (page 125)
• “Creating a Lock LUN Device File” (page 125)
• “Starting Availability Tools” (page 125)
• “Configuring SNMP Trap Destination for Enclosures” (page 126)
• “Configuring SNMP Trap Destination for Modular Cooling System Devices” (page 127)
• “Generating an SVA Site Configuration File” (page 128)
7.1 Finalizing the Configuration of Compute Resources
Perform the following tasks only if you configured SLURM or LSF or both; omit this task if
neither SLURM nor LSF are configured.
• “Perform SLURM Postconfiguration Tasks” (page 123)
• “Perform LSF Postconfiguration Tasks” (page 124)
7.1.1 Perform SLURM Postconfiguration Tasks
If SLURM was configured, follow this procedure to finish the configuration process:
1. Begin this procedure as the root user on the head node.
2. Use the SLURM postconfiguration utility to update the slurm.conf file with the correct
processor count and memory size. If a QsNet
II
interconnect switch is present, an elanhosts
file is created with an entry for each compute node. The elanhosts file is part of the QsNet
II
switch support that is provided by SLURM.
# spconfig
Detected the Quadrics Elan interconnect; configuring SLURM support...
The new 'elanhosts' file contains entries for 16 nodes...
Configured nodes n[1-15] with 2 CPUs and 8108 MB of total memory...
Configured node n16 with 4 CPUs and 9549 MB of total memory...
Restarting SLURM...
SLURM Post-Configuration Done.
In this example, the spconfig utility was run on a system with a QsNet
II
interconnect. For
all other interconnect types, the first two lines of the command output are not displayed.
NOTE: If a compute node did not boot up, the spconfig utility configures the node as
follows:
Configured unknown node n14 with 1 CPU and 1 MB of total memory...
After the node has been booted up, re-run the spconfig utility to configure the correct
settings.
3. If the system is using a QsNet
II
interconnect, ensure that the number of node entries in the
/opt/hptc/libelanhosts/etc/elanhosts file matches the expected number of
operational nodes in the cluster. If the number does not match, verify the status of the nodes
to ensure that they are all up and running, and re-run the spconfig utility. If the number
does not match, it is possible that the QsNet
II
network card on the missing node is not fully
operational.
4. Follow this procedure to add customizations to the SLURM configuration file:
7.1 Finalizing the Configuration of Compute Resources 123