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Subject: Re: [OMPI devel] IBCM error
From: Pavel Shamis (Pasha) (pasha_at_[hidden])
Date: 2008-07-17 09:04:21


Jeff Squyres wrote:
> On Jul 16, 2008, at 11:07 AM, Don Kerr wrote:
>
>>> Pasha added configure switches for this about a week ago:
>>>
>>> --en|disable-openib-ibcm
>>> --en|disable-openib-rdmacm
>> I like these flags but I thought there was going to be a run time
>> check for cases where Open MPI is built on a system that has ibcm
>> support but is later run on a system without ibcm support.
>
>
> Yes, there are.
>
> - if the /dev/infiniband/ucm* files aren't there, we silently return
> "not supported" and skip ibcm
> - if ib_cm_open_device() (the first function call) fails, we assume
> that IBCM simply isn't supported on this platform and silently return
> "not supported" and skip ibcm
>
Right not we are skipping the IBCM all time. Only if user specify IBCM
explicitly via include/exclude interface the IBCM will be used.

Pasha