SCOOP is a system monitoring tool for the PC Cluster System used with the SCore Cluster System Software. There are three components: an agent program (scoopd(8)), a data collection server program (ScoopServer(8)), and a GUI tool (this program) which displays information collected by the server.

The options available for Scoop:

-s server

A comma-separated list of hosts running ScoopServer(8) programs. This option is required

-port tcp_port

Specifies the TCP port number to communicate with the ScoopServer. The default port number is 4010. If multiple servers are specified with the -s option then all the servers must use the same port number

-i interval

Specifies the interval (in seconds) to request updated information from the server. The default is 60 seconds

-small

Use a small size for the monitor grid

-W

Pop up a warning dialog window when a compute host is down

Scoop can be run on any machine which has the Java programming environment with Swing library installed. The machine does not have to be a cluster host. It can communicate with any number of ScoopServer hosts, and display cluster host resource information as formatted table data. Cluster host activity is displayed by a block matrix, with each host of the cluster represented by a block in the matrix. The user can easily monitor activities of multiple clusters from a single viewpoint.

Upon execution, Scoop waits until communication is made with all servers specified with the -s option, and then displays a window showing host activity in a block matrix. There is no distinction made between different hosts in a cluster, or other clusters. Initially, each host is represented by a block in the matrix, with the name of the host in the block. Selecting "Toggle Grid Size" from the "Control" pull-down menu will toggle the block so each host is represented by a small square. Host activity is still represented by the color of the block.

Cluster host resource information can be displayed by selecting "Open Resource Information..." from the "Control" pull-down menu. A table of resource information data is displayed in a new window. This information will also be updated periodically. Information can be updated at any time by selecting "Update Information" from the "Control" pull-down menu.

Initially, all categories of information are displayed in the table. Selecting "Choose Categories..." from the "Control" pull-down menu will display a window of check boxes. Each check box can be turned on or off to select a group of categories to display in the table. The following categories are available:

• Machine Specs
• Operation System
• # of Processes
• # of Users
• Boot date
• Uptime
• Load Average
• CPU Usage
• Memory Usage
• Swap Usage
• Filesystem Usage