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Where do reductions get handled for multipatch engines?
From: |
Richard Guenther |
Subject: |
Where do reductions get handled for multipatch engines? |
Date: |
Wed, 21 Aug 2002 11:32:15 +0200 (CEST) |
Hi!
I'd like to explore the way pooma handles reductions for multipatch
engines, especially for remote ones using cheetah with MPI. I suspect we
do neither use MPI reductions, nor doing something equivalent ourselves.
The reason I believe this is that I see O(n) scaling with the number of
nodes used rather than O(log(n)). So a project would be to teach pooma to
use reduction operations from the parallelization engine where available -
but I'm currently stuck in finding the places to add such code.
Can anyone give me some hints where to look? Anybody tried to do something
similar already?
Thanks, Richard.
--
Richard Guenther <address@hidden>
WWW: http://www.tat.physik.uni-tuebingen.de/~rguenth/
The GLAME Project: http://www.glame.de/
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