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/
> 
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