[mvapich-discuss] clog2TOslog2 fails on MPI_Test

[Anthony Chan]

----- Original Message -----
> If I convert the clog2 with jumpshot I get
> 
> Exception in thread "Thread-5" java.lang.OutOfMemoryError: Java heap
> space

The exception just means the JVM's maximum heap size is too small.
That can be changed easily in the "LogFile Convertor" window's hidden
JVM panel (you need to hit the up arrow in the "up and down" arrow
near the bottom of the screen) by setting "-Xmx64m" to "-Xmx512m" (or
something bigger but appropriate for your machine).  The hidden panel
is like Fig 3.3 in this link

http://www.mcs.anl.gov/research/projects/perfvis/software/viewers/jumpshot-4/node10.html

> at javax.swing.text.GapContent.allocateArray(GapContent.java:77)
> at javax.swing.text.GapVector.resize(GapVector.java:197)
> at javax.swing.text.GapVector.shiftEnd(GapVector.java:212)
> at javax.swing.text.GapContent.shiftEnd(GapContent.java:328)
> at javax.swing.text.GapVector.open(GapVector.java:184)
> at javax.swing.text.GapVector.replace(GapVector.java:125)
> at javax.swing.text.GapContent.insertString(GapContent.java:115)
> at
> javax.swing.text.AbstractDocument.handleInsertString(AbstractDocument.java:709)
> at
> javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:693)
> at javax.swing.text.PlainDocument.insertString(PlainDocument.java:114)
> at javax.swing.JTextArea.append(JTextArea.java:470)
> at
> viewer.convertor.AdvancingTextArea.append(AdvancingTextArea.java:21)
> at viewer.convertor.InputStreamThread.run(InputStreamThread.java:48)

> 
> It hangs with many "Error > Drawable.Order: WARNING! Equal Drawables?"
> in the jumpshot window.

The message means that there is state(or arrow) whose duration is zero,
i.e. start and end times are identical.  This could be the MPI_Wtime isn't
accurate enough for the fast message rate.  But the warning message
is harmless and shouldn't stop the conversion.

> If I run clog2TOslog2 on the command line I go into an infinite loop
> as far as I can see.

What do you mean by infinite loop ?  Is there any error message ?
If you still get the Java heap space exception with clog2TOslogg2 command
You could increase the JVM heap size through command like

env JVMFLAGS=-Xmx512m <mvapich2-install-dir>/bin/clog2TOslog2 inputlog.clog2

A.Chan

> I have requested 1.6 on our machine. Apparently it is being evaluated
> but there are some issues with MPI-IO implementation at present.
> 
> I have been offered OpenMPI/mpe so I will try that next.
> 
> Thanks.
> 
> 
> 
> On Fri, 1 Apr 2011, Anthony Chan wrote:
> >
> > What error message did clog2TOslog2 produce ?
> >
> > If I recall correctly, mvapich2 1.4 made some MPI calls in
> > the implementation of some communicator creation calls that
> > casued logging to fail. But I don't recall MPI_Test has such
> > problem.
> >
> > http://mail.cse.ohio-state.edu/pipermail/mvapich-discuss/2010-March/002765.html
> >
> > The error has since been fixed in 1.4.1. You may want
> > to try newer version of mvapich2 to see the problem disappear.
> >
> > If not, we need to do some more debugging to find out what went
> > wrong.
> >
> > PS. You could compile MPE for OpenMPI, see the mpe2/INSTALL if you
> >    really need to go that route.
> >
> > A.Chan
> >
> >
> > ----- Original Message -----
> >> Hi,
> >>
> >> Using:
> >> mvapich2 1.4
> >> Intel C compiler 11.1.059
> >> Redhat linux 2.6.18
> >>
> >> I am causing clog2TOslog2 to fail when I use MPI_Test
> >> in my code.
> >>
> >> If I switch from MPI_Test to MPI_Wait then it works fine.
> >>
> >> If I compile my code (on another machine) with MPICH2
> >> it works and I can visualise in jumpshot.
> >>
> >> Our HPC only has openmpi (no mpe support)
> >> or mvapich2.
> >>
> >> Thanks,
> >> Mark.
> >>
> >> _______________________________________________
> >> mvapich-discuss mailing list
> >> mvapich-discuss at cse.ohio-state.edu
> >> http://mail.cse.ohio-state.edu/mailman/listinfo/mvapich-discuss
> >