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Subject: Re: [OMPI users] Technical details of various MPI APIs
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2011-11-04 08:19:11


Sorry for the delay in replying.

We don't have any formal documentation written up on this stuff, in part because we keep optimizing and changing the exact makeup of wire protocols, etc.

If you have any specific questions, we can try to answer them for you.

On Oct 21, 2011, at 2:45 PM, ramu wrote:

> Hi,
> I am trying to explore more on technical details of MPI APIs defined in OpenMPI
> (for e.g., MPI_Init(), MPI_Barrier(), MPI_Send(), MPI_Recv(), MPI_Waitall(),
> MPI_Finalize() etc) when the MPI Processes are running on Infiniband cluster
> (OFED). I mean, what are the messages exchanged between MPI processes over IB,
> how does processes identify each other and what messages they exchange to
> identify and what all is needed to trigger data traffic. Is there any doc/link
> available which describes these details. Please suggest me.
>
> Thanks & Regards,
> Ramu
>
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-- 
Jeff Squyres
jsquyres_at_[hidden]
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