Ok, fair enough; thanks. That's a pretty good reason to not chop it any time soon (and it's not like there's any pressure to do/not do something immediately).
Can you keep us informed -- e.g., if your requirement ever does disappear and it would be safe to delete this functionality from OMPI? (I'm not saying we *would* delete it, but if a community member changes their stance from "there's a nonzero chance we're going to need it" to "we're not going to use it", that would be a very helpful data point). Thanks. On Apr 30, 2014, at 12:44 PM, Joshua Ladd <jladd.m...@gmail.com> wrote: > Hi, OMPI Community > > On the call yesterday, Ralph and Jeff posed the question to the Community at > large and to NVIDIA in particular if they/we/us have a vested interest in > heterogeneous support. Mellanox and NVIDIA are partnering on systems that, on > today's roadmap, could require heterogeneous support from the underlying MPI. > At the moment, it's not known if this will remain an issue. Today it appears > it is, but tomorrow it may not be. So, anyhow, to answer the question: Yes, > there are core OMPI developers and industrial partners for whom this support > appears to be important given the current state of the art. > > Best regards, > > Josh > > Joshua S. Ladd, PhD > Staff Engineer, HPC Software > Mellanox Technologies > > Email: josh...@mellanox.com > > > > On Mon, Apr 28, 2014 at 2:00 PM, Nathan Hjelm <hje...@lanl.gov> wrote: > 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 > > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2014/04/14639.php > > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2014/04/14659.php -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
