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Subject: Re: [OMPI users] help me understand these error msgs
From: Ralph Castain (rhc_at_[hidden])
Date: 2013-01-16 10:46:41


On Jan 16, 2013, at 7:41 AM, Jure Pečar <pegasus_at_[hidden]> wrote:

>
> Hello,
>
> I have a large fortran code processing data (weather forecast). It runs ok with smaller dataset, but on larger dataset I get some errors I've never seen before:
>
> node061:05144] [[55141,0],11]->[[55141,0],0] mca_oob_tcp_msg_send_handler: writev failed: Bad file descriptor (9) [sd = 9]
> [node061:05144] [[55141,0],11] routed:binomial: Connection to lifeline [[55141,0],0] lost

This one means that a backend node lost its connection to mpirun. We use a TCP socket between the daemon on a node and mpirun to launch the processes and to detect if/when that node fails for some reason.

>
> and
>
> node084:7.0.Non-fatal temporary exhaustion of send tid dma descriptors
> (elapsed=43.788s, source LID=0x49/context=11, count=1) (err=0)
>
> I'm using QLogic software version 7.1.0.0.58 (ofed 1.5.4.1, open-mpi 1.4.3).
>
> I'm starting this program with mpirun -mca btl openib,sm,self so I don't really understand what tcp has to do in the first error message.
>
> Also I traced second error message to psm code, but it appears even if i add -mca mtl ^psm to my mpirun arguments. Why?
>
> Any help appreciated.
>
>
> --
>
> Jure Pečar
> http://jure.pecar.org
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