PGPROF User's Guide - The Portland Group

Getting Started
‣ More difficult cases involve memory alignment and algorithm restructuring. These issues are
beyond the scope of this manual.
1.7. Troubleshooting
If you are having trouble during invocation or the initialization process, use the following
sections for tips on what might be causing your problem.
1.7.1. Prerequisite: Java Virtual Machine
PGPROF depends on the Java Virtual Machine (JVM) which is part of the Java Runtime
Environment (JRE). PGPROF requires that the JRE be version 1.6 or above.
Linux os OS X
When PGI software is installed on Linux or OS X, the version of Java required by the profiler
is also installed. PGPROF uses this version of Java by default. You can override this behavior
in two ways: set your PATH to include a different version of Java; or, set the PGI_JAVA
environment variable to the full path of the Java executable. The following example uses a bash
command to set PGI_JAVA:
$ export PGI_JAVA=/home/myuser/myjava/bin/java
Windows
If an appropriately-versioned JRE is not already on your system, the PGI software installation
process installs it for you. The PGI command shell and Start menu links are automatically
configured to use the JRE. If you choose to skip the JRE-installation step or want to use a
different version of Java to run the profiler, then set your PATH to include the Java bin directory
or use the PGI_JAVA environment variable to specify the full path to the java executable.
1.7.2. Slow Network
If you are viewing a profile across a slow network connection, or a connection that does not
support remote display of Java GUIs, consider using the PGPROF command-line interface,
described in Command Line Interface.
PGI Profiler User Guide 6