Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: [OMPI users] Random hungs of applications when using the openib BTL
From: Kamel Mazouzi (mazouzi_at_[hidden])
Date: 2010-12-18 14:06:48


We have a random hungs of some applications (NAMD, Molpro, ...) when
using openib BTL.

We are using ompi 1.4.3 and ompi 1.3.4 compiled with icc intel compiler.

linux kernel : 2.6.18-128 RH, node have 8 cores.

OFED version : 3.2

ibv_devifno seems to be ok on all nodes.

Note that we dont have problems when running with TCP.

when i do strace -p value I got this infinite output :

poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6,
events=POLLIN}, {fd=7, events=POLLIN}

Any idea?

Than you for your help.