debugging an mpi program with dbx

I tried to run:

mpirun -dbx BigScience

it threw up a cryptic message saying

..... Tell dbx to ignore SIG_USR1....

.....

....

echo "ignore USR1" >> $dbgfile

echo "debug /afs/hep.wisc.edu/home/tangri/gyro-5.3.3/sim/DEBUG/BigScience" >> $dbgfile

echo "stop in MPI_Init" >> $dbgfile

echo "run -p4pg $p4pgfile -p4wd $p4workdir $prognamemain $cmdLineArgs" >> $dbgfile

Can anyone tell in more detail how to impliment this. I'll be thankful....

[529 byte] By [lettersa] at [2007-11-27 9:15:42]