Using and Administering

Administrative Uses for the Graphical User Interface

The end user can perform many tasks more efficiently and faster using the graphical user interface (GUI) but there are certain tasks that end users cannot perform unless they have the proper authority. If you are defined as a LoadLeveler administrator in the LoadLeveler configuration file then you are immediately granted administrative authority and can perform the administrative tasks discussed in this section. To find out how to grant someone administrative authority, see Step 1: Define LoadLeveler Administrators.

You can access LoadLeveler administrative commands using the Admin pulldown menu on both the Jobs window and the Machines window of the GUI. The Admin pulldown menu on the Jobs window corresponds to the command options available in the llhold, llfavoruser, and llfavorjob commands. The Admin pulldown menu on the Machines window corresponds to the command options available in the llctl command.

The main window of the GUI, as shown in Figure 32, has three sub-windows: one for job status with pull-down menus for job-related commands, one for machine status with pull-down menus for machine-related commands, and one for messages and logs. There are a variety of facilities available that allow you to sort and select the items displayed.

Job Related Administrative Actions

You access the administrative commands that act on jobs through the Admin pulldown menu in the Jobs window of the GUI.

You can perform the following tasks with this menu:

Favor Users
Allows you to favor users. This means that you can select one or more users whose jobs you want to move up in the job queue. This corresponds to the llfavoruser command.

Select
Admin from the Jobs window

Select
Favor User

&TRIANGLE.The Order by User window appears.

Type in
the name of the user for whom you want to favor their jobs.

Press
OK

Unfavor Users
Allows you to unfavor users. This means that you want to unfavor the user's jobs which you previously favored. This corresponds to the llfavoruser command.

Select
Admin from the Jobs window

Select
Unfavor User

&TRIANGLE.The Order by User window appears.

Type in
the name of the user for whom you want to unfavor their jobs.

Press
OK

Favor Jobs
Allows you to select a job that you want to favor. This corresponds to the llfavorjob command.

Select
one or more jobs from the Jobs window

Select
Admin from the Jobs window

Select
Favor Jobs

&TRIANGLE.The selected jobs are favored.

Press
OK

Unfavor Jobs
Allows you select a job that you want to unfavor. This corresponds to the llfavorjob command.

Select
one or more jobs from the Jobs window

Select
Admin from the Jobs window

Select
Unfavor Jobs

&TRIANGLE.Unfavors the jobs that you previously selected.

Syshold
Allows you to place a system hold on a job. This corresponds to the llhold command.

Select
a job from the Jobs window

Select
Admin pulldown menu from the Jobs window

Select
Syshold to place a system hold on the job.

Release From Hold
Allows you to release the system hold on a job. This corresponds to the llhold command.

Select
a job from the Jobs window

Select
Admin pulldown menu from the Jobs window

Select
Release From Hold to release the system hold on the job.

Machine Related Administrative Actions

You access the administrative commands that act on machines using the Admin pulldown menu in the Machines window of the GUI.

Using the GUI pulldown menu, you can perform the tasks described in this section.

Start All
Starts LoadLeveler on all machines listed in machine stanzas beginning with the central manager. Use this option when specifying alternate central managers.

Select
Admin from the Machines window.

Select
Start All

Start LoadLeveler
Allows you to start LoadLeveler on selected machines.

Select
one or more machines on which you want to start LoadLeveler.

Select
Admin from the Machines window.

Select
Start LoadLeveler

Stop LoadLeveler
Allows you to stop LoadLeveler on selected machines.

Select
on or more machines on which you want to stop LoadLeveler.

Select
Admin from the Machines window.

Select
Stop LoadLeveler.

Stop All
Stops LoadLeveler on all machines listed in machine stanzas. Use this option when specifying alternate central managers.

Select
Admin from the Machines window.

Select
Stop All

reconfig
forces all daemons to reread the configuration files.

Select
the machine on which you want to operate. To reconfigure this xloadl session, choose reconfig but do not select a machine.

Select
Admin from the Machines window.

Select
reconfig.

recycle
stops all LoadLeveler daemons and restarts them.

Select
the machine on which you want to operate.

Select
Admin from the Machines window.

Select
recycle.

Configuration Tasks
starts Configuration Tasks TaskGuide

Select
Admin from the Machines window.

Select
Config Tasks

Note: Use the invoking script lltg to start the TaskGuide outside of xloadl. This option will appear on the pulldown only if the LoadL.tguides fileset is installed.

drain
allows no more LoadLeveler jobs to begin running on this machine but it does allow running jobs to complete.

Select
the machine on which you want to operate.

Select
Admin from the Machines window.

Select
drain.

A cascading menu allows you to select either daemons, schedd, startd, or startd by class. If you select daemons, both machines will be drained. If you select schedd, only the schedd on the selected machine will be drained. If you select startd, only the startd on the selected machine will be drained. If you select startd by class, a window appears which allows you to select classes to be started.

flush
terminates running jobs on this host and sends them back to the system queue to await redispatch. No new jobs are redispatched to this machine until resume is issued. Forces a checkpoint if jobs are enabled for checkpointing.

Select
the machine on which you want to operate.

Select
Admin from the Machines window.

Select
flush.

suspend
suspends all jobs on this host.

Select
the machine on which you want to operate.

Select
Admin from the Machines window.

Select
suspend.

resume
resumes all jobs on this machine.

Select
the machine on which you want to operate.

Select
Admin from the Machines window.

Select
resume.

A cascading menu allows you to select either daemons, schedd, startd, or startd by class. If you select daemons, both machines will be resumed. If you select schedd, only the schedd on the selected machine will be resumed. If you select startd, only the startd on the selected machine will be resumed. If you select startd by class, a window appears which allows you to select classes to be resumed.

Capture Data
collects information on the machines selected.

Select
the machine on which you want to operate.

Select
Admin from the Machines window.

Select
Capture Data.

Collect Account Data
collects accounting data on the machines selected.

Select
the machine on which you want to operate.

Select
Admin from the Machines window.

Select
Collect Account Data.

A window appears prompting you to enter the name of the directory in which you want the collected data stored.

Create Account Report
creates an accounting report for you.

Select
Admin > Create Account Report...

Note: If you want to receive an extended accounting report, select the extended cascading button.

A window appears prompting you to enter the following information:

  • A short, long, or extended version of the output. The short version is the default.
  • The user ID
  • The class name
  • The LoadL (LoadLeveler) group name
  • The UNIX group name
  • The Allocated host
  • The job ID
  • The report Type
  • The section
  • A start and end date for the report. If no date is specified, the default is to report all of the data in the report.
  • The name of the input data file.
  • The name of the output data file. This is the same as stdout.

Press
OK

The window closes and you return to the main window. The report appears in the Messages window if no output data file was specified.

version
displays version and release data for LoadLeveler on the machines selected in an information window.

Select
the machine on which you want to operate.

Select
Admin from the Machines window.

Select
version.

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