[openib-general] uverbs and OSU MPI/MPI in general?

Roland Dreier roland at topspin.com
Fri Apr 1 11:39:59 PST 2005


    Peter> Hi All, How does gen2's uverbs compare to VAPI? Is it meant
    Peter> to be the same API? Should OSU's MPI run on top of this or
    Peter> is there some other MPI implementation that will be able to
    Peter> run 'natively' over IB?

The basic functionality is the same but the API is different.  For
example completion events are handled in a different way that allows
better performance.

None of the current MPI implementations that use IB will run
unmodified, but everyone (including OSU) is porting to the new API.

 - R.



More information about the general mailing list