[petsc-users] boomeramg memory usage

[Benjamin Sanderse]

I am sorry for the previous message in Dutch.. it was to be addressed to Christiaan Klaij only. 
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?

Benjamin

Op 11 jul 2012, om 10:48 heeft Klaij, Christiaan het volgende geschreven:

> I'm solving a 3D Poisson equation on a 200x200x100 grid using
> CG and algebraic multigrid as preconditioner. I noticed that with
> boomeramg, the memory increases as the number of procs increases:
> 
> 1 proc:    2.8G
> 2 procs:   2.8G
> 4 procs:   5.2G
> 8 procs:   >12G (max reached, swapping)
> 
> The memory usage is obtained from top. When using ml or gamg (all
> with PETSc defaults), the memory usage remains more or less
> constant. Something wrong with my install? Some Hypre option I
> should set?
> 
> 
> dr. ir. Christiaan Klaij
> CFD Researcher
> Research & Development
> E mailto:C.Klaij at marin.nl
> T +31 317 49 33 44
> 
> MARIN
> 2, Haagsteeg, P.O. Box 28, 6700 AA Wageningen, The Netherlands
> T +31 317 49 39 11, F +31 317 49 32 45, I www.marin.nl
> 

-- 
Ir. B. Sanderse
 
Centrum Wiskunde en Informatica
Science Park 123
1098 XG Amsterdam

t: +31 20 592 4161
e: sanderse at cwi.nl

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