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Subject: Re: [OMPI devel] IBCM error
From: Pavel Shamis (Pasha) (pasha_at_[hidden])
Date: 2008-07-15 03:33:49


>> I need to check on this. You may want to look at section A3.2.3 of
>> the spec.
>> If you set the first byte (network order) to 0x00, and the 2nd byte
>> to 0x01,
>> then you hit a 'reserved' range that probably isn't being used
>> currently.
>>
>> If you don't care what the service ID is, you can specify 0, and the
>> kernel will
>> assign one. The assigned value can be retrieved by calling
>> ib_cm_attr_id().
>> (I'm assuming that you communicate the IDs out of band somehow.)
>
>
> Ok; we'll need to check into this. I don't remember the ordering --
> we might actually be communicating the IDs before calling
> ib_cm_listen() (since we were simply using the PIDs, we could do that).
>
> Thanks for the tip! Pasha -- can you look into this?
It looks that th modex message we are preparing during query stage, so
the order looks ok.
Unfortunately on my machines ibcm module does not create
"/dev/infiniband/ucm*" and I can not thest the functionality.

Regards,
Pasha.