Getting Started: Monitoring

Our monitoring service can be accessed at zabbix.pleiades.uni-wuppertal.de with the credentials “pleiades” and “pleiades”. Zabbix collects various information regarding current and past resource usage and quotas.

Dashboard

After login you are typically greeted by the user dashboard:

There are also multiple sub-pages available, covering an overview and login-node-specific metrics:

The overview dashboard presents aggregated metrics and you can select the time frame of presented information on the top right. The visible widgets are:

• Number of free (idle) worker or gpu nodes
• Current time
• SLURM Allocated Cores by Group (2 plots): Current allocation of Cores per group as reported by Slurm
• Effective Share used by User Group: Slurm CPU resource usage for each group (resets each month)
• Effective Spare of GPU resources by User Group: Slurm GPU resource usage for each group (resets each month)
• Beegfs Group Quota (% and TB): Information on how much space is available on BeeGFS per group

More detailed pages about each class of login nodes provide information about:

• Number of logged in users
• CPU usage
• Memory usage

You can change the displayed dashboard through Monitoring > Dashboard > All dashboards > User dashboard:

All available user dashboards are:

GPU Dashboard

Another dashboard shows detailed information of all five gpu nodes, gpu2100[1-5]:

You can select separate pages for each gpu node, which provide detailed information:

These pages can help you answer questions like:

• How much memory is available on a specific GPU? (8 GPUs per node)
• How good is the utilization of a specific GPU?
• How busy is the node CPU or memory?
• How busy is the nodes network interface?
• How much power does the GPU consume?

If you know which GPUs your job is using, or if you use a whole node exclusively, this approach can help to assess your software performance.