<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>I am sorry for the previous message in Dutch.. it was to be addressed to Christiaan Klaij only. </div><div>In any case, it might be that the results of Christiaan are related to my issues which I posted yesterday... are there more people that experience memory or scaling problems with BoomerAMG?</div><div><br></div><div>Benjamin</div><div><br></div><div><div>Op 11 jul 2012, om 10:48 heeft Klaij, Christiaan het volgende geschreven:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>I'm solving a 3D Poisson equation on a 200x200x100 grid using<br>CG and algebraic multigrid as preconditioner. I noticed that with<br>boomeramg, the memory increases as the number of procs increases:<br><br>1 proc: 2.8G<br>2 procs: 2.8G<br>4 procs: 5.2G<br>8 procs: >12G (max reached, swapping)<br><br>The memory usage is obtained from top. When using ml or gamg (all<br>with PETSc defaults), the memory usage remains more or less<br>constant. Something wrong with my install? Some Hypre option I<br>should set?<br><br><br>dr. ir. Christiaan Klaij<br>CFD Researcher<br>Research & Development<br>E <a href="mailto:C.Klaij@marin.nl">mailto:C.Klaij@marin.nl</a><br>T +31 317 49 33 44<br><br>MARIN<br>2, Haagsteeg, P.O. Box 28, 6700 AA Wageningen, The Netherlands<br>T +31 317 49 39 11, F +31 317 49 32 45, I <a href="http://www.marin.nl">www.marin.nl</a><br><br></div></blockquote></div><br><div>
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