Prism User's Guide - CSAIL People - MIT

110 Prism User s Guide
The total use of the partition-manager subsystem can be less than or equal to 100
percent. Typically, it will be less than 100 percent, because there will be times
when the nodes are busy and the partition manager is not.
The total use of the node subsystem can also be less than or equal to 100 percent.
The difference between the total and 100 percent is time during which the nodes
are idle. To use the nodes efficiently, node idle time should be kept as low as
possible.
Note that the use of partition-manager resources and node resources can each
sum to 100 percent, because both can be busy all the time a program is executing.
6.5.2 The Procedures Pane
The pane titled Resources: name in the Performance Data window displays
histograms showing the utilization of a specific resource or subsystem by each
procedure in a program; we call this the Procedures pane. You choose the
resource or subsystem by left-clicking on it in the Resources pane. By default,
the most-used resource appears in the Procedures pane. The name of the '
resource or subsystem appears in the title of the pane - for example: Resource:
CM Total.
Use the Mode selection from the Options menu to choose how you want to display
the procedure data:
* Choose Call Graph to display the dynamic call graph of the procedures.
* -Choose Flat (the default) to display a list of all procedures in the program
and their use of the resource or subsystem.
In flat mode, the Procedures pane displays a list of all procedures in the program
and each one's total use of the selected resource or subsystem. This is useful for
determining which procedures are consuming most of the time for the resource
or subsystem. The Procedures pane in Figure 33 shows the data in flat mode.
Version 1.2, March 1993
Copyright C0 1993 Thinking Machines Corporation