On Apr 30, 2009, at 6:10 PM, Barrett, Brian W wrote:

I'm done now. You don't want to fix your crap, that's fine. Just don't be surprised by the continued "why you shouldn't use IB" presentations from
people who have to write applications to it.



Let's not forget that Brian is not only an MPI developer (i.e., a network programmer), he's also a customer.

If OpenFabrics only wants the HPC market, you can probably ignore this entire thread. The OpenFabrics-based MPI's will hobble along like they have been. If you want larger markets, it's probably pretty safe to assume that Brian's reactions are going to be quite similar to enterprise network programmers.

To be clear: it's not just verbs education (books, tutorials, FAQ's, etc.) that is required to win the hearts and minds of enterprise network programmers. You also need a network API that is no more complex than common sockets usage. Verbs -- and the additional baggage that it requires for performance, like registration caches and memory allocation hooking -- does not currently meet this requirement.

--
Jeff Squyres
Cisco Systems

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