Enabling GPFS IO

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Enabling GPFS IO allows IBM Spectrum LSF Explorer to collect fine-grained statistics for accounting and monitoring. IBM Spectrum LSF Explorer supports GPFS version 5 and higher.

The Workload Scale IO Accounting report is a job level scale IO statistics report. This report can be used for scenarios such as:
  • Accounting for GPFS IO usage distribution by time.
  • Charge back accounting.
  • To detect abnormal or malicious users or jobs.
  • To provide hints for system troubleshooting.
The Workload Scale IO line chart in the Workload Monitor report measures:
  • Total Read Size (MB)
  • Total Write Size (MB)
  • Read Bytes Per Second
  • Write Bytes Per Second
  • Read Operations Per Second
  • Write Operations Per Second
GPFS IO can be enabled during installation using the install.config file:
  • For Explorer native installation, the GPFS_HOME and GPFS_DEVICE parameters must be specified in the install.config file.
  • For LSF Suite installations, GPFSIO_MONITOR must be specified in the lsf-inventory file.

Post-installation, GPFS IO can be installed and enabled with the mmchqos command :

mmchqos $device --enable --fine-stats 120 --pid-stats yes

Here, "$device" refers to the GPFS device name. Also ensure that lsf-beat has been installed.

Note: If the GPFS device name is not the default "gpfs1", the correct name should be configured manually in the join.config.json file after installation.