On Feb 2, 2011, at 7:02 AM, Terry Dontje wrote: > 2. The system libraries on different linux versions are not always the same. > At Oracle we build a binary distribution of OMPI that we test out on several > different versions of Linux. The key here is building on a machine that is > essentially the lowest common denominator of all the system software that > exists on the machines one will be running on. This is essentially why > Oracle states a bounded set of OS versions a distribution runs on. An > example of this is there is a component in OMPI that was relying on a version > of libbfd that changed significantly between Linux version. Once we got rid > of the usage of that library we were ok. There are not "a lot" of these > instances but the number is not zero.
+1 If your systems are not running exactly the same versions of software (e.g., different OS's), we typically categorize this as a "heterogeneous" scenario -- with all the caveats that Terry mentions. You may well likely require a separate OMPI install for each OS, and possibly (likely) even a different compilation of your application for each OS. In general, I try to limit my OMPI jobs to homogeneous platforms. Heterogeneous can be done; it's just somewhat of a pain to get right. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
