Known issues with IBM Spectrum LSF Simulator

Known issues with LSF Simulator.

Dynamic hosts in the cluster

If the LSF production cluster that you are going to simulate contains dynamic hosts, these hosts are not simulated as dynamic hosts. LSF Simulator attempts to convert the dynamic hosts into static hosts in the collected data so these hosts show up as static hosts in the simulated cluster. The conversion adds these hosts to the lsf.cluster.cluster_name file in the conf directory in the collected data and adds the dynamic hosts into the hostlist line. This adds the hosts as static hosts that are recognized by LSF Simulator.

LSF Data Manager

If LSF Data Manager is enabled in the LSF production environment, the experiments count 1024 CPUs for the Data Manager host, which leads to improper results. To work around this issue, disable the LSF Data Manager host before loading the LSF configuration into LSF Simulator.

Dynamic resources

Dynamic resources that are reported from the elim process are converted to fixed resources when loading the LSF configuration.

LSF multicluster capability

LSF Simulator does not support the LSF multicluster capability. LSF Simulator only works with single LSF clusters.

Queue-level user groups

User groups that are defined at the queue level as fair share are not imported when importing the workload snapshot. User groups that are defined at the job level with the bsub -G command option are imported properly.