Also, be aware that the Cygwin folks have already released a fully functional port of OMPI to that environment as a package. So if you want OMPI on Cygwin, you can just download and install the Cygwin package - no need to build it yourself.
On Dec 18, 2012, at 7:23 AM, Jeff Squyres <jsquy...@cisco.com> wrote: > On Dec 18, 2012, at 10:06 AM, JR Cary wrote: > >> So, IMO, OpenMPI would have to turn to a different >> group for support. E.g., Microsoft compatible HPC >> application vendors. And for that one would need a >> compelling case of being better in, e.g., performance. > > I doubt that a performance case could be made. That is, I don't expect > modern versions of Windows are any more/less efficient and integer/floating > point ops (which are key to HPC apps) than modern versions of Linux or other > OS's. The underlying x86 hardware is the same (in most/commodity cases), > after all. > > Windows also has (effectively) an OS-bypass network stack, like Linux, for > network providers. > > Hence, I don't want to open the "Windows performance vs. Linux performance" > religious debate. I'm assuming that if someone cared, they could get > comparable performance out of Windows and Linux. > >> Perhaps there is another way? > > > At this point, I think we're up for volunteers. :-\ > > FWIW: I'm still debating these cygwin patches. > > The cmake/native build process will likely go if no one steps up to maintain > it. But in our discussions, I don't think we've delineated between "Windows > native" and "cygwin": a major difference is that he cygwin build uses the > same Autotools build system that OMPI uses on POSIX systems. And I don't > know how much custom code cygwin requires vs. native Windows code (although I > seem to recall that native windows code definitely performs better than its > cygwin counterparts -- e.g., Windows SOCKETs are faster then cygwin POSIX > sockets). > > -- > Jeff Squyres > jsquy...@cisco.com > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
