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From: Galen Shipman (gshipman_at_[hidden])
Date: 2007-06-13 13:19:55

On Jun 13, 2007, at 11:15 AM, Nysal Jan wrote:

> I was just bitten yesterday by a problem that I've known about for a
> while but had never gotten around to looking into (I could have sworn
> that there was an open trac ticket on this, but I can't find one
> anywhere).
> I have 2 hosts: one with 3 active ports and one with 2 active ports.
> If I run an MPI job between them, the openib BTL wireup got badly and
> it aborts. So handling a heterogeneous number of ports is not
> currently handled properly in the code.
> I don't know if Gleb's patch addresses this situation or not; I'll
> look at his patch this afternoon.
> There is a ticket (closed) here:
> ticket/548
> It was fixed by Galen for 1.2. There is a FAQ entry also about
> this
> wireup

I think Gleb's patch addresses a potential race condition when both
sides attempt to connect at the same time.

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