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Subject: Re: [OMPI devel] RFC: Remove heterogeneous support
From: Nathan Hjelm (hjelmn_at_[hidden])
Date: 2014-04-28 14:00:09


On Mon, Apr 28, 2014 at 01:58:13PM -0400, George Bosilca wrote:
> My concern was more about the “what" factor: what do you write on remote memory in a heterogeneous case. I imagine you can either write the converted data or you can convert remotely after writing. Anyway, on both cases you need intermediary buffers to do the conversion (especially if we are looking a size mismatch), so the interest of RMA is quickly vanishing.
>
> For now, I would just not support heterogeneous environments for RMA. We might want to add a check at windows creation time, so at least the users are warned.

Good point. I will look at adding a warning now.

-Nathan



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