On Jun 8, 2011, at 5:30 PM, Dave Goodell wrote: >> Is there a reason we wouldn't disable it in OMPI's hwloc by default? > > Performance will be better when left enabled on platforms where the compiler > and the architecture are in agreement...
I'm not too concerned about hwloc's performance in OMPI -- it'll be used during initialization only. Unless there's a dramatic difference for, say, large-core-count machines, I'd be inclined to just disable it unless there's some reason to leave it on. It's one less thing that a user will have to know/remember to --disable, even in Josh's exotic case. > IMO Josh's use case is a bit exotic. He's using one system's compiler as an > approximation of an appropriate compiler for another system instead of using > a cross compiler or compiling in an identical environment. That viewpoint > may or may not be shared by the OMPI developers. > > -Dave > > > _______________________________________________ > hwloc-users mailing list > hwloc-us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
