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Subject: Re: [OMPI devel] µªÎ`: µªÎ`: doubt on latency result with OpenMPI library
From: Jeff Squyres (jsquyres) (jsquyres_at_[hidden])
Date: 2014-03-28 13:02:43


On Mar 28, 2014, at 12:18 PM, "Shamis, Pavel" <shamisp_at_[hidden]> wrote:

>> Technically you may setup RoCE connection without RDMA CM.
>
> The version of the RoCE support that I implemented (in an alternative MPI implementation) did it through the regular OOB
> channel. As I remember the only difference is the fact that you have to exchange mac instead of guid plus some other small tricks. The problem
> of this approach is in the VLAN support, which is more challenging to implement this way. Therefore RDMACM is sort of "preferred" method.


Huh. Didn't know that.

--
Jeff Squyres
jsquyres_at_[hidden]
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