Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] Question about scheduler support
From: Ralph Castain (rhc_at_[hidden])
Date: 2014-05-15 19:23:43


On May 15, 2014, at 4:15 PM, Maxime Boissonneault <maxime.boissonneault_at_[hidden]> wrote:

> Le 2014-05-15 18:27, Jeff Squyres (jsquyres) a écrit :
>> On May 15, 2014, at 6:14 PM, Fabricio Cannini <fcannini_at_[hidden]> wrote:
>>
>>> Alright, but now I'm curious as to why you decided against it.
>>> Could please elaborate on it a bit ?
>> OMPI has a long, deep history with the GNU Autotools. It's a very long, complicated story, but the high points are:
>>
>> 1. The GNU Autotools community has given us very good support over the years.
>> 2. The GNU Autotools support all compilers that we want to support, including shared library support (others did not, back in 2004 when we started OMPI).
>> 3. The GNU Autotools can fully bootstrap a tarball such that the end user does not need to have the GNU Autotools installed to build an OMPI tarball.
> You mean some people do NOT have GNU Autotools ? :P

Actually, yes - Cray doesn't install them.

>
> Jokes aside, CMake has certainly matured enough for point #2 and is used by very big projects (KDE for example). Not sure about point #3 though. I am wondering though, how do you handle Windows with OpenMPI and GNU Autotools ? I know CMake is famous for being cross-plateform (that's what the C means) and can generate builds for Windows, Visual Studio and such.
>

The Windows integration actually involved adding CMake support within OMPI. It was truly an ugly effort that caused the student who took it on a great deal of pain. Ultimately, that support was scrapped when the student graduated and nobody was willing to maintain it.

> In any case, I do not see any need to change from one toolchain to another, although I have seen many projects providing both and that did not seem to be too much of a hassle. It's still probably more work than what you want to get into though.

Yeah, as Jeff indicated, without a burning justification, it just doesn't seem worth it.

>
> Maxime
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users