In article <[EMAIL PROTECTED]>, John Schmidt wrote: > Since upgrading to mpich 1.2.5.2-1, our big mpi based application has stopped > working. I get this error: > > mpirun -np 2 sus -mpm inputs/MPM/disks2mat4patch.ups > xm_2407: p4_error: Command-line arguments are missing: 0 > /usr/bin/mpirun: line 1: 2407 Segmentation > fault /home/jas/SCIRun/NewBC/debug/Packages/Uintah/StandAlone/sus "-mpm" > "inputs/MPM/disks2mat4patch.ups" > -p4pg /home/jas/SCIRun/NewBC/debug/Packages/Uintah/StandAlone/PI2327 > -p4wd /home/jas/SCIRun/NewBC/debug/Packages/Uintah/StandAlone > > To confirm that mpi is working, I compiled the mpich examples found in the > documentation and ran them for various number of processors and all worked > fine using mpich 1.2.5.2-1. > > On a different machine, I am running mpich 1.2.5-6, and the above command > (mpirun -np 2 sus -mpm inputs/MPM/disks2mat4patch.ups) works without any > problems.
Did you recompile your application? Maybe it has different command line parameters passed to the executable that the mpi implementation picks up on. mpirun is just a script wrapper - try setting it to verbose (set -x) and see what it actually executes. I assume it will execute another script wrapper mpirun.ch_p4 which again you could follow with 'set -x'. Then see if you can make sure it does not place any parameters on your executable that it does not like... No idea what the -O stands for. Even better, try this on both systems to see the difference: $ mpirun /bin/echo In my case the output was '-p4pg /home/mwill/PI11082 -p4wd /home/mwill' for an older Scyld-6 beowulf cluster: mpich-1.2.5-8.5_Scyld mpich-p4-gnu-1.2.5-8.5_Scyld Michael -- Michael Will, Linux Sales Engineer Tel: 415.358.2673 Toll Free: 888-PENGUIN PENGUIN COMPUTING - The World's Most Reliable Linux System www.penguincomputing.com -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
