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Subject: Re: [OMPI users] OpenMPI with openib partitions
From: Pavel Shamis (Pasha) (pasha_at_[hidden])
Date: 2008-10-07 07:09:04


Matt,
I guess that you have some problem with partition configuration.
Can you share with us your partition configuration file (by default
opensm use /etc/opensm/partitions.conf) and guid from your machines (
ibstat | grep GUID ) ?

Regards,
Pasha

Matt Burgess wrote:
> Hi,
>
>
> I'm trying to get openmpi working over openib partitions. On this
> cluster, the partition number is 0x109. The ib interfaces are pingable
> over the appropriate ib0.8109 interface:
>
> d2:/opt/openmpi-ib # ifconfig ib0.8109
> ib0.8109 Link encap:UNSPEC HWaddr
> 80-00-00-4A-FE-80-00-00-00-00-00-00-00-00-00-00
> inet addr:10.21.48.2 <http://10.21.48.2>
> Bcast:10.21.255.255 <http://10.21.255.255> Mask:255.255.0.0
> <http://255.255.0.0>
> inet6 addr: fe80::202:c902:26:ca01/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:65520 Metric:1
> RX packets:16811 errors:0 dropped:0 overruns:0 frame:0
> TX packets:15848 errors:0 dropped:1 overruns:0 carrier:0
> collisions:0 txqueuelen:256
> RX bytes:102229428 (97.4 Mb) TX bytes:102324172 (97.5 Mb)
>
>
> I have tried the following:
>
> /opt/openmpi-ib/1.2.6/bin/mpirun -np 2 -machinefile machinefile -mca
> btl openib,self -mca btl_openib_max_btls 1 -mca btl_openib_ib_pkey_val
> 0x8109 -mca btl_openib_ib_pkey_ix 1 /cluster/pallas/x86_64-ib/IMB-MPI1
>
> but I just get a RETRY EXCEEDED ERROR. Is there a MCA parameter I am
> missing?
>
> I was successful using tcp only:
>
> /opt/openmpi-ib/1.2.6/bin/mpirun -np 2 -machinefile machinefile -mca
> btl tcp,self -mca btl_openib_max_btls 1 -mca btl_openib_ib_pkey_val
> 0x8109 /cluster/pallas/x86_64-ib/IMB-MPI1
>
>
>
> Thanks,
> Matt Burgess
> ------------------------------------------------------------------------
>
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-- 
--
Pavel Shamis (Pasha)
Mellanox Technologies LTD.