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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


Hello,

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.

nixter