The following functions were previously part of the Parallel
System Support Programs (PSSP) Resource Manager and are now part of
LoadLeveler.
Table 1. New LoadLeveler Functions Previously Part of the Resource Manager
| Resource Manager Function | LoadLeveler Function |
|---|---|
| Support for pools | The pool_list keyword in the machine stanza. |
| Specifying batch, interactive, or general use for nodes | The machine_mode keyword in the machine stanza. |
| Enabling SP exclusive use accounting for parallel jobs | The sp_excluse_enable keyword in the machine stanza. |
| Controlling user logins | LoadLeveler does not directly interact with the Login Control Facility. LoadLeveler logs into nodes as root and switches to the user's ID. root is never blocked on a node. |
| Providing node and adapter information for SP nodes | The llextSDR extracts information from the SDR that you can use in administration file stanzas. |
| Requesting dedicated use of nodes | The node_usage keyword in the job command file. |
| Requesting dedicated use of adapters | The usage operand on the network keyword in the job command file. |
| Displaying job information with the jm_status -j command | The llq command. |
| Displaying pool information with the jm_status -P command | The llstatus -l command. |
Also, the LoadLeveler rm_host keyword in the machine stanza is no longer needed.