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Running out of memory
Posted Feb 16, 2011, 5:24 a.m. EST Interfacing 2 Replies
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Hello,
I'm trying to solve the following problem. After building my geometry, creating my mesh and solving ist, I try to plot severalt streamlines with an automatic matlab function. This Matlab function gets the solved model as an input parameter and a vektor with the startingpoints of my streamlines. The next step is a for-loop loading a single set of coordinate (x,y,z), and run the following. My chain of thougt is, that after the streamline is exported to the text-file, it is deleted or replaced by the next coordinates, respectivly.
But after about 1000 streamlines the functions stops execution with the error message that java running out of memory.
Who can help me? I already tried to increase the max Java heap size to 1024...
Best regards Matthias
model.result('pg1').feature('str1').set('xcoord', X);
model.result('pg1').feature('str1').set('ycoord', Y);
model.result('pg1').feature('str1').set('zcoord', Z);
model.result('pg1').feature('str1').set('resolution', 'fine');
model.result('pg1').feature('str1').set('maxsteps', '500000');
model.result('pg1').feature('str1').set('back', 'off');
model.result('pg1').feature('str1').feature('col1').set('expr', 'es.normE');
model.result('pg1').feature('str1').feature('col1').set('descr', 'Elektrisches Feld, Betrag');
model.result('pg1').run;
model.result.export('plot2').set('filename', ['T:\Test\COMSOL_Multiphysics\Zwickel\3D\MATLAB_MODEL\Stromlinie_' Spannung 'kV_Element_' I '.txt']);
model.result.export('plot2').run;
I'm trying to solve the following problem. After building my geometry, creating my mesh and solving ist, I try to plot severalt streamlines with an automatic matlab function. This Matlab function gets the solved model as an input parameter and a vektor with the startingpoints of my streamlines. The next step is a for-loop loading a single set of coordinate (x,y,z), and run the following. My chain of thougt is, that after the streamline is exported to the text-file, it is deleted or replaced by the next coordinates, respectivly.
But after about 1000 streamlines the functions stops execution with the error message that java running out of memory.
Who can help me? I already tried to increase the max Java heap size to 1024...
Best regards Matthias
model.result('pg1').feature('str1').set('xcoord', X);
model.result('pg1').feature('str1').set('ycoord', Y);
model.result('pg1').feature('str1').set('zcoord', Z);
model.result('pg1').feature('str1').set('resolution', 'fine');
model.result('pg1').feature('str1').set('maxsteps', '500000');
model.result('pg1').feature('str1').set('back', 'off');
model.result('pg1').feature('str1').feature('col1').set('expr', 'es.normE');
model.result('pg1').feature('str1').feature('col1').set('descr', 'Elektrisches Feld, Betrag');
model.result('pg1').run;
model.result.export('plot2').set('filename', ['T:\Test\COMSOL_Multiphysics\Zwickel\3D\MATLAB_MODEL\Stromlinie_' Spannung 'kV_Element_' I '.txt']);
model.result.export('plot2').run;
2 Replies Last Post Feb 21, 2011, 7:07 a.m. EST
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Posted:
1 decade ago
1000 streamlines is a large number to try to visualize on most screens. Perhaps, you could do it in parts and plot sections.
You could try a 64-bit computer which can access much more memory. 32-bit machine only can use 2GB of memory on any single application, including COMSOL
Have you tried using the streamline graphics within COMSOL ? Perhaps that would be more efficient in memory.
You could try a 64-bit computer which can access much more memory. 32-bit machine only can use 2GB of memory on any single application, including COMSOL
Have you tried using the streamline graphics within COMSOL ? Perhaps that would be more efficient in memory.
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Posted:
1 decade ago
Thanks a lot for your reply.
The its just that I don't want to plot all of them in the graphic user interface. I am only writing them to text-files to analyse them with a matlab script.
The its just that I don't want to plot all of them in the graphic user interface. I am only writing them to text-files to analyse them with a matlab script.