Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

Subject: [OMPI users] pipes system limit
From: Yann JOBIC (jobic_at_[hidden])
Date: 2009-08-07 11:21:16


Hello all,

I'm using hpc8.2 :
Lidia-jobic% ompi_info
Displaying Open MPI information for 32-bit ...
                 Package: ClusterTools 8.2
                Open MPI: 1.3.3r21324-ct8.2-b09j-r40
[...]

And i've got a X4600 machine (8*4 cores).

When i'm trying to run a 32 processor jobs, i've got :

Lidia-jobic% mpiexec --mca opal_set_max_sys_limits 1 -n 32 ./exe
[Lidia:29384] [[61597,0],0] 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
[Lidia:29384] [[61597,0],0] 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
[Lidia:29384] [[61597,0],0] ORTE_ERROR_LOG: The system limit on number
of network connections a process can open was reached in file oob_tcp.c
at line 446
--------------------------------------------------------------------------
Error: system limit exceeded on number of network connections that can
be open

This can be resolved by setting the mca parameter
opal_set_max_sys_limits to 1,
increasing your limit descriptor setting (using limit or ulimit commands),
or asking the system administrator to increase the system limit.
--------------------------------------------------------------------------

I tried the ulimit, the mca parameter, i've got no idea of where to look at.
I've got the same computer under linux, and it's working fine...

Have you seen it ?
Do you know a way to bypass it ?

Many thanks,

Yann

-- 
___________________________
Yann JOBIC
HPC engineer
Polytech Marseille DME
IUSTI-CNRS UMR 6595
Technopôle de Château Gombert
5 rue Enrico Fermi
13453 Marseille cedex 13
Tel : (33) 4 91 10 69 39
  ou  (33) 4 91 10 69 43
Fax : (33) 4 91 10 69 69