The Power8 can run in little-endian mode without penalty:
Not saying hetero support is unneeded, but this case may not be it.
On Apr 24, 2014, at 12:54 PM, George Bosilca <bosilca_at_[hidden]> wrote:
> There seems to be an opportunity to still have heterogeneous environment in the future.
> I dont think it is fair to shift the burden on the original developer instead of the committer who broke a feature.
> On Apr 23, 2014, at 09:49 , Jeff Squyres (jsquyres) <jsquyres_at_[hidden]> 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.
>> Jeff Squyres
>> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
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