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Subject: Re: [OMPI users] ofa-default-subnet-gid
From: Bill Wichser (bill_at_[hidden])
Date: 2008-02-21 16:49:18

Thanks George!

I've added:
--mca btl_openib_if_include mthca0
--mca btl_openib_warn_default_gid_prefix 0

and hopefully it'll do the right thing without any warnings.


George Bosilca wrote:
> Here are the MCA parameters that you can use:
> MCA btl: parameter "btl_openib_if_include" (current value: <none>)
> Comma-delimited list of HCAs/ports to be used (e.g.
> "mthca0,mthca1:2"; empty value means to use all ports
> found).
> Mutually exclusive with btl_openib_if_exclude.
> MCA btl: parameter "btl_openib_if_exclude" (current value: <none>)
> Comma-delimited list of HCAs/ports to be excluded
> (empty value
> means to not exclude any ports). Mutually exclusive with
> btl_openib_if_include.
> george.
> On Feb 21, 2008, at 2:45 PM, Bill Wichser wrote:
>> In trying to get openmpi up and running on a new cluster, I came across
>> this error about having both of my IB switches set to the same
>> subnet-gid. Snooping around on my hosts which run the opensm daemon, I
>> indeed found this to be the case in the /var/log/osm-ib[0-1].log files,
>> giving up finding it with ibstat which showed these values to be
>> different, at least the second part of the GID.
>> Before I try and pursue how to actually change this value for the opensm
>> daemon, I do have a question.
>> Since both of my hosts are connected to each switch, how am I to
>> instruct openmpi to use port0? I'm trying to use port0 as the MPI
>> network and port1 as the storage network. Is there something that I
>> need to add someplace forcing connections only to some
>> default-subnet-gid?
>> Thanks,
>> Bill
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
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