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Subject: Re: [OMPI devel] IBCM error
From: Pavel Shamis (Pasha) (pasha_at_[hidden])
Date: 2008-07-14 07:55:10


I can add in head of query function something like :

if (!mca_btl_openib_component.cpc_explicitly_defined)
    return OMPI_ERR_NOT_SUPPORTED;

Jeff Squyres wrote:
> On Jul 14, 2008, at 3:59 AM, Lenny Verkhovsky wrote:
>
>> Seems to be fixed.
>
> Well, it's "fixed" in that Pasha turned off the error message. But
> the same issue is undoubtedly happening.
>
> I was asking for something a little stronger: perhaps we should
> actually have IBCM not try to be used unless it's specifically asked
> for. Or maybe it shouldn't even build itself unless specifically
> asked for (which would obviously take care of the run-time issues as
> well).
>
> The whole point of doing IBCM was to have a simple and fast mechanism
> for IB wireup. But with these two problems (IBCM not properly
> installed on all systems, and ib_cm_listen() fails periodically), it
> more or less makes it unusable. Therefore we shouldn't recommend it
> to production customers, and per precedent elsewhere in the code base,
> we should either not build it by default and/or not use it unless
> specifically asked for.
>