Re: [OMPI users] help understand unhelpful ORTE error message

2015-11-30 Thread Jeff Squyres (jsquyres)
On Nov 24, 2015, at 9:31 AM, Dave Love wrote: > >> btw, we already use the force, thanks to the ob1 pml and the yoda spml > > I think that's assuming familiarity with something which leaves out some > people... FWIW, I agree: we use unhelpful names for components in Open MPI. What Gilles is s

Re: [OMPI users] MPI_AllReduce vs MPI_IAllReduce

2015-11-30 Thread Felipe .
Thanks for the reply, Ralph. Now I think it is clearer to me why it could be so much slower. The reason would be that the blocking algorithm for reduction has a implementation very different than the non-blocking. Since there are lots of ways to implement it, are there options to tune the non-blo