[OMPI users] Doing a lot of spawns does not work with ompi 1.3 BUT works with ompi 1.2.7

[Anthony Thevenin]

Hello,

I have two C codes :
   - master.c : spawns a slave
   - slave.c : spwaned by the master

If the spawn is include in a do-loop, I can do only 123 spawns before having 
the folowing errors:

ORTE_ERROR_LOG: The system limit on number of pipes a process can open was 
reached in file base/iof_base_setup.c at line 112
ORTE_ERROR_LOG: The system limit on number of pipes a process can open was 
reached in file odls_default_module.c at line 203

This test works perfectly even for a lot of spawns (more than 1000) with 
Open-MPI 1.2.7.

You will find the following files attached:
config.log.tgz
ompi_info.out.tgz
ifconfig.out.tgz
master.c.tgz
slave.c.tgz


command used to run my application :
mpirun -n 1 ./master

COMPILER:
PGI 7.1



LD_LIBRARY_PATH:
/space/thevenin/openmpi-1.3_pgi/lib:/usr/local/lib



Thank you very much


Anthony

PATH : /space/thevenin/openmpi-1.3_pgi/bin:/usr/local/tecplot/bin:/usr/local/pgi/linux86-64/7.1/bin:/usr/totalview/bin:/usr/local/matlab71/bin:/usr/bin:/usr/ucb:/usr/sbin:/usr/bsd:/sbin:/bin:/usr/bin/X11:/usr/etc:/usr/local/bin:/usr/bin:/usr/bsd:/sbin:/usr/bin/X11:. If you have any idea of what this occurs, please tell me what to do to make it works.

config.log.tgz
Description: application/compressed-tar

ifconfig.out.tgz
Description: application/compressed-tar

master.c.tgz
Description: application/compressed-tar

ompi_info.out.tgz
Description: application/compressed-tar

slave.c.tgz
Description: application/compressed-tar