Hi George, The Power8 can run in little-endian mode without penalty:
http://www.hpcwire.com/2014/04/23/power8-openpower-might-mean-hpc/ Not saying hetero support is unneeded, but this case may not be it. Scott On Apr 24, 2014, at 12:54 PM, George Bosilca <bosi...@icl.utk.edu> wrote: > There seems to be an opportunity to still have heterogeneous environment in > the future. > http://www.enterprisetech.com/2014/04/23/ibm-google-show-power8-systems-openpower-efforts/ > > I don’t think it is fair to shift the burden on the original developer > instead of the committer who broke a feature. > > George. > > On Apr 23, 2014, at 09:49 , Jeff Squyres (jsquyres) <jsquy...@cisco.com> > wrote: > >> WHAT: Remove data-heterogeneous support from Open MPI >> >> WHY: No one uses it (it's not the default), it's broken (probably has been >> for a while) >> >> WHERE: Datatype engine, some configury, and a few other places >> >> TIMEOUT: Tuesday teleconf, 6 May 2014 (i.e., 2 weeks from now) >> >> MORE DETAIL: >> >> It recently came to my attention that we seem to have some bit rot in the >> heterogeneous data representation support such that if you configure with >> --enable-heterogeneous, even if you run on homogeneous machines, you can get >> segv's with tcp,sm,self. >> >> The heterogeneous support has never been enabled by default. AFAIK, only >> Cisco tests it regularly in its MTT. I'm be greatly surprised if many >> (any?) users use it at all. >> >> So I have to ask myself: why do we keep this functionality around? It seems >> like we should delete this code, simplify things a little, and move on. >> >> Comments? >> >> -- >> Jeff Squyres >> jsquy...@cisco.com >> For corporate legal information go to: >> http://www.cisco.com/web/about/doing_business/legal/cri/ >> >> _______________________________________________ >> 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/2014/04/14584.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/2014/04/14594.php
