Installing a Master Host
You can configure only one managed host to be the master host. If you have already
configured a master and you select the Install Master sub-menu item, a message appears
that you have already configured a master for the compute grid.
The Grid Engine module deploys only a dedicated N1GE6 master
host. Unless you plan to have relatively low job throughput on your grid, you should
not have the N1GE6 master host also act as a compute host. To add a host as a master
host in the compute grid, you must first import the host into the SCS 2.2 framework.
For more information, see "About Adding Managed Hosts" in the SCS 2.2
Release Notes.
Note - The SCS server cannot server as an N1 Grid Engine (N1GE) Master Host or
Compute Host, since only SCS clients can have those roles. An SCS server cannot also
be an SCS client at the same time. Thus, the SCS server has to be a different host
than either the N1GE Master Host or Compute Hosts.
To install a master host for the grid:
StepsSelect Grid Engine > Install Master. The selector appears, displaying the list of managed hosts; see Installing Grid Engine Hosts.
Click to highlight the managed host that you want to configure as the
master host in the compute grid.
Pick a Version from the list presented The version picked
at this step will be installed on the Master as well as all the hosts in the grid
Click Install in the bottom right corner. The Task Progress dialog appears.
Figure 1-6 Install Master Dialog

Installing Compute and Access Hosts
Once you have configured one of the managed hosts as the master host, you can
add additional hosts to act as compute hosts or access hosts
in the grid.
Note - To add a host as a compute host in the grid, you must first import the
host into the Sun Control Station framework. For more information, see "About
Adding Managed Hosts" in the SCS 2.2 Product Notes.
Note - Before you can add a compute host to a grid, you must first designate
a master host. If you have not yet designated a master host, the system instructs
you to do so. For more information see, Installing Grid Engine Hosts.
StepsSelect Grid Engine > Install Compute Host. The selector appears, displaying the list of managed hosts; see the previous
figure.
Click to highlight a host(s). You can also click Select All at the top to choose all hosts in the list. You
can pick the host(s) to be either compute or access hosts. Pick the desired button
at the bottom of the page labelled "Install Compute Hosts" or "Install
Access Hosts"
Figure 1-7 Install Compute Hosts Dialog
 The Task Progress dialog appears. When the installation completes, a new dialog
box appears which allows you to either finish the installation or view the installation
events. If you choose View Events, a dialog similar
to the following appears.
Figure 1-8 View Events Dialog

When you are finished installing hosts, click Done.
Monitoring the Grid
When you click the Monitor Grid menu item, a page with a high-level overview
of the state of the grid appears.
This page has tables that allow you to:
Buttons on the main page let you go to pages where you can:
View Job Details
View Queue Details
View Host Details
Examine Daemon Log files
Also available from the SCS menu is the ability to quickly see the state of
the Grid by choosing Station Settings >Active Monitor.
Viewing Summary Status
Figure 1-9 Summary Status Table
 The Summary Status table shows the total number of jobs in various states (pending,
running, suspended, and so forth). It also shows the load averaged across all compute
hosts and the total amount of used and installed memory summed over all compute hosts.
Updating Data
The subheading of this table contains a timestamp for when the data was obtained.
By default, most monitoring data is automatically refreshed every minute. To display
the most up-to-date database information in the tables, click the Monitor Grid menu
item again. You can also reload the browser window. If the monitoring is not working
properly for any reason, the subheading displays a warning and displays the timestamp
for when the data was most recently obtained. This timestamp applies to all monitoring
information displayed in GEMM, not just the Summary Status table.
Above this table is the Update button. Clicking this button retrieves the data
immediately instead of waiting for the next one-minute interval. A progress bar shows
the progress of the update. When the update completes, click the Done button to return
to the main Monitor Grid page with the new data and updated timestamp.
If an update of the monitor is already in progress when you click the button,
a message indicate this situation. As soon as the update in progress completes, the
Update button will again be available to force a new update.
Viewing Jobs
You access the Jobs details page by clicking the Jobs button in the Summary
Status table on the main Monitor page.
This page has a table which shows a summary of all current jobs in the system
including jobs which are pending, running, suspended, held, or in an error state.
Completed jobs are not listed. The top row of three buttons lets you see the list
of jobs according to three different views: Overview, Utilization, and Allocation.
The initial view is always the Overview. Clicking any of the other buttons displays
the other corresponding views. In all views, the back button on the table leads back
to the main page.
Also present in all views at the bottom of the frame is the Filter, which you
can use to limit the jobs displayed by providing configured criteria. Finally, the
three buttons corresponding to the three different views are always shown at the top
of each view, allowing you to move directly among the three views.
|