Using and Administering

Allowing Users to Submit Interactive POE Jobs

Follow the steps in this section to set up your system so that users can submit interactive POE jobs to LoadLeveler.

1. Make sure that you have installed LoadLeveler and defined LoadLeveler administrators. See Quick Set Up for information on defining LoadLeveler administrators.
2. Run the llextSDR command to extract node and adapter information from the SDR. See llextSDR - Extract adapter information from the SDR for information on using this command.
3. Incorporate the appropriate node and adapter information into your LoadLeveler administration file stanzas.

   For example, the following output represents two adapter stanzas and their corresponding machine stanza:

   k10n09.ppd.pok.ibm.com: type = adapter
    adapter_name = en0
    network_type = ethernet
    interface_address = 9.114.51.73
    interface_name = k10n09.ppd.pok.ibm.com
    
    
   k10sn09.ppd.pok.ibm.com: type = adapter
    adapter_name = css0
    css_type = SP_Switch_MX_Adapter
    network_type = switch
    interface_address = 9.114.51.137
    interface_name = k10sn09.ppd.pok.ibm.com
    switch_node_number = 8
    
    
   k10n09.ppd.pok.ibm.com: type=machine
    adapter_stanzas = k10n09.ppd.pok.ibm.com k10sn09.ppd.pok.ibm.com
    spacct_exclusive_enable = true
    
   

4. Define a machine to act as the LoadLeveler central manager. See Quick Set Up for more information.
5. Define your scheduler to be the LoadLeveler Backfill scheduler by specifying SCHEDULER_TYPE = BACKFILL in the LoadLeveler configuration file. See Choosing a Scheduler for more information.
6. Consider setting up a class stanza for your interactive POE jobs. See Setting Up a Class for Parallel Jobs for more information. Define this class to be your default class for interactive jobs by specifying this class name on the default_interactive_class keyword. See Step 2: Specify User Stanzas for more information.
7. Configure optional functions, including:
   • Setting up pools: you can organize nodes into pools by using the pool_list keyword in the machine stanza. See Step 1: Specify Machine Stanzas for more information.
   • Specifying batch, interactive, or general use for nodes: you can use the machine_mode keyword in the machine stanza to specify the type of jobs that can run on a node.
   • Enabling SP exclusive use accounting: you can specify that the accounting function on an SP system be informed that a job step has exclusive use of a machine by specifying spacct_exclusive_enable = true in the machine stanza (as shown in the previous example).

     See Step 1: Specify Machine Stanzas for more information on these keywords.

8. Start LoadLeveler using the llctl command. See Quick Set Up for more information.