[Pkg-openmpi-maintainers] OpenMPI 1.5 in Ubuntu Precise

[Sylvestre Ledru]

Hello guys,

First, thanks for your work on OpenMPI (and, not related to this
subject, many thanks to James for his great work on Jenkins).


Le lundi 20 février 2012 à 09:51 +0000, James Page a écrit :
> Hi OpenMPI Maintainers!
> 
> Robie Basak and I have been working on evaluating whether Ubuntu
> Precise should ship with OpenMPI 1.5.x instead of OpenMPI 1.4.x; this
> upgrade has been identified of potential importance for future ARM
> server deployments.
Do you really have feedbacks for MPI users based on ARM servers ?
I have the feeling that it is a bit early for that (but I might be
wrong).

> We have completed a full rebuild test of all reverse build
> dependencies on openmpi - aside from a couple of new issues it all
> looks OK (see [0] for more details).
> 
> We wanted to get an opinion from people closer to OpenMPI on a couple
> of things:
> 
> 1) The general sanity of this upgrade; is OpenMPI 1.5 really ready for
> inclusion in anything other than experimental at this point in time?
> Upstream describe it as a beta/feature release.
Well, I think upstream is the best judge about their software. If they
recommends 1.4 for a stable usage, I am not sure we should go with
1.5...

> 2) Some test cases; before we propose this upgrade in Ubuntu we really
> need to run some tests against openmpi 1.5.  Do you guys have any know
> good workloads to try against this new version?
You could try to use packages based on OpenMPI with a test suite.
However, for real life hardcore usages, I don't know if we have anything
in the archive.

Sylvestre