[mpich-discuss] Jumpshot and mpich2-1.3.3rc1

[Nicolas Rosner]

> From the error message, it seems that issues has to do with either java
> runtime or build environment.

I agree, and it looks like the former is missing or not being pointed
to correctly. What flavor and version of a Java runtime is installed
on that machine?

This is what I see on my system if I replace `Show=""' with
`Show="echo"' on the first line (after the shebang) of the
bin/jumpshot script:

$ jumpshot foobar.slog2
GUI_LIBDIR is set. GUI_LIBDIR = /mpi/lib
/usr/bin/java -Xms32m -Xmx512m -jar /mpi/lib/jumpshot.jar foobar.slog2

What do you get? Keep in mind that the first component should be a
Java runtime (as in the VM binary), not a Java compiler (such as
javac, gcj, etc).

Also note that the script apparently lets you override its
configure-time-found location via env vars, e.g. JAVA_HOME et al.


> Warning: -Xms32m not understood. Ignoring.
> Warning: -Xmx512m not understood. Ignoring.
> Warning: -jar not understood. Ignoring.

This sounds like whatever's being used as the `java' executable
doesn't know about the -jar command line switch. The first two could
be ignored to some extent, but ignoring the third one should indeed be
fatal: among other things ...


> Exception in thread "main" java.lang.NoClassDefFoundError: .mpich2_debug.install-mpe.mpich2-1.3.3rc1.linux.lib.jumpshot.jar

... a pathname to a .jar file is not a class name (although your
`java' should normally be able to deduce the main class from the
manifest within the .jar, if run in -jar mode).


Regards
Nicolás