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Subject: Re: [OMPI users] Support for CUDA and GPU-direct with OpenMPI 1.6.5 an 1.7.2
From: Ralph Castain (rhc_at_[hidden])
Date: 2013-07-06 15:36:21


Rolf will have to answer the question on level of support. The CUDA code is not in the 1.6 series as it was developed after that series went "stable". It is in the 1.7 series, although the level of support will likely be incrementally increasing as that "feature" series continues to evolve.

On Jul 6, 2013, at 12:06 PM, Michael Thomadakis <drmichaelt7777_at_[hidden]> wrote:

> Hello OpenMPI,
>
> I am wondering what level of support is there for CUDA and GPUdirect on OpenMPI 1.6.5 and 1.7.2.
>
> I saw the ./configure --with-cuda=CUDA_DIR option in the FAQ. However, it seems that with configure v1.6.5 it was ignored.
>
> Can you identify GPU memory and send messages from it directly without copying to host memory first?
>
>
> Or in general, what level of CUDA support is there on 1.6.5 and 1.7.2 ? Do you support SDK 5.0 and above?
>
> Cheers ...
> Michael
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