MPI_Scan/MPI_Exscan are easy to forget but really useful. -Nathan
> On May 2, 2018, at 7:21 AM, Peter Kjellström <c...@nsc.liu.se> wrote: > > On Wed, 02 May 2018 06:32:16 -0600 > Nathan Hjelm <hje...@me.com> wrote: > > > Hit send before I finished. If each proc along the axis needs the > > partial sum (ie proc j gets sum for i = 0 -> j-1 SCAL[j]) then > > MPI_Scan will do that. > > I must confess that I had forgotten about MPI_Scan when I replied to > the OP. In fact, I don't think I've ever used it... :-) > > /Peter K > > -- > Sent from my Android device with K-9 Mail. Please excuse my brevity.
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