
Chapter 9. Programming tools 103
interval by selected processors.
• Process view shows the portion of time spent in a given activity
class.
All the displays have several options which can be controlled through
the pop-up menu from the right mouse button. These include
• Communication statistics: the total amount of communication be-
tween all processor pairs is shown. This is opened from the Global
timeline display by selecting Comm. Statistics. The communication
statistics display can be linked to the Global timeline display to
show the statistics for the currently visible portion of time only.
This is done in the communications statistics window by selecting
Use timeline portion from the pop-up menu.
• Message lengths: the lengths of individual messages are shown. In
the Global timeline, select Identify Message and point to a message
line in the Global timeline display.
• Components/Parallelism: the number of processors engaged in a
given activity is shown in the Global timeline.
Figure 9.4 shows a sample session of the VAMPIR visualization tool
with the global timeline, communication statistics and processor activity
chart displays.
9.5.3 More information
A compressed version of the user’s guide of the VAMPIR visualization
tool is available on Caper as $DOC/VAMPIR-userguide.ps.gz. Copy
this file to a temporary directory and use the command gunzip to un-
compress the file. A user’s guide for the VAMPIRtrace library is available
on Caper as $DOC/VT-userguide.ps.
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