[MPICH] mpich 1.2.7 and application profiling freeze

[Jan Wagner]

Hi,

I'm using mpich 1.2.7b compiled from sources, and I try to run
applications over 'mpirun' that have been compiled with the '-pg' flag to
enable profiling.

The compiler used for mpich and for compiling the application is:

[jwagner at ps3-001 ~]$ g++ -v
Using built-in specs.
Target: ppc64-yellowdog-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran --enable-java-awt=gtk
--disable-dssi --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre
--enable-secureplt --with-long-double-128 --host=ppc64-yellowdog-linux
--build=ppc64-yellowdog-linux --target=ppc64-yellowdog-linux
--with-cpu=default32
Thread model: posix
gcc version 4.1.1 20060525 (Yellow Dog 4.1.1-1)

When the application is compiled without -pg it works just fine with
mpirun.

But when the -pg compile and link flag are set, mpirun will simply not
progress:

running /home/jr/correlator/mpifxcorr-GNU-gprof on 8 LINUX ch_p4 processors
Created /home/jr/correlator/PI3664

There are no RSH or SSH connection attempts in auth.log.


Checking with strace -f, at "stuck" time there are just a lot of

[pid  6226] sigreturn()                 = ? (mask now [])
[pid  6226] --- SIGPROF (Profiling timer expired) @ 0 (0) ---
[pid  6226] sigreturn()                 = ? (mask now [ABRT BUS FPE KILL
USR1 SEGV USR2 PIPE TERM STKFLT CONT STOP TSTP TTIN TTOU URG XCPU XFSZ
VTALRM PROF WINCH])


Any ideas how to get gprof profiling to work?

(btw I don't want to profile MPI, or MPI message passing - just profile my
application internally when it runs a distributed test case)

thanks,
 - Jan