The `Real Time Cluster Monitor' function displays a window on the user's screen with updating graphs containing load information for each host in the HPVM cluster. The user invokes this function by selecting the Real Time Cluster Monitor option from the `Cluster Monitoring' menu.
After the `Real Time Cluster Monitor' is invoked, its window is displayed on the user's screen. This window consists of three main parts. At the top of the window are two sets of radio buttons which allow the user to select which cluster hosts are displayed in the monitor window and to select which load metric is displayed on the load graph. In the center of the window is a scrollable panel displaying a set of bar graphs which graphically display the load information of the cluster hosts. These bar graphs automatically update at a 15-second interval. Finally, at the bottom of the window is a `Close' button which the user uses to close the `Real Time Cluster Monitor' window.
The cluster hosts which are displayed in the `Real Time Cluster Monitor' window can be selected by using the radio buttons on the left-hand side of the panel at the top of the window. There are three options available to the user: `Full Cluster', `Job ID', and `Queue'. By selecting the `Full Cluster' button, all hosts in the cluster are displayed in the monitor window. By selecting the `Job ID' button and filling in the associated text box with the job ID of a batch job which is currently executing on the cluster, only the hosts allocated to that batch job will be displayed in the monitor window. Finally, by selecting the `Queue' button and choosing a queue name in the associated queue choice box, only the hosts to which the selected queue dispatch jobs will be displayed in the monitor window.
The load metric which is displayed in the `Real Time Cluster Monitor' window can be selected by using the radio buttons on the right-hand side of the panel at the top of the window. These buttons allow the user to select from displaying utilization percentage, 15-second load average, system I/O rate, system paging rate, `tmp' space free, swap space free, or core memory free on each host.
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