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Re: [Getfem-users] memory problem with gf_asm()

From: Ronan Perrussel
Subject: Re: [Getfem-users] memory problem with gf_asm()
Date: Wed, 08 Oct 2008 13:10:18 +0200
User-agent: Thunderbird (X11/20080925)

Hi Hicham,

maybe you should follow the example on the documentation page concerning gf_workspace :

Nevertheless, even with these instructions I have also some problems for managing the memory used by getfem in matlab : I call an external subroutine, which follows the advices of the documentation concerning gf_workspace, but after several calls of the subroutine matlab finally crashes.
Does someone experiment the same behavior?

Best regards,

Hicham Tber a écrit :
I am using gf_asm(), from the Matlab interface, inside a loop. I realized that 
the used memory increases with iterations until my program runs out of memory. 
I would like to know if this is a bug or just something wrong with my program. 
The example below illustrate my problem.

Thank you in advance.


% dx = 0.01;
Omega = gf_mesh('triangles grid',[0:dx:1],[0:dx:1]);
Vh = gf_mesh_fem(Omega,1);
im = gf_mesh_im(Omega, gf_integ('IM_EXACT_SIMPLEX(2)')) ;
VhNdof=gf_mesh_fem_get(Vh, 'nbdof');

e = ones(VhNdof,1); Nmax = 100;

for k = 1:Nmax
     Mat = gf_asm('laplacian', im, Vh, Vh,  ones(1,VhNdof));
% memory monitoring on Linux !free -m

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