Comsol Error 9040 Out Of Memory
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Topic Release Popular Topics 5.2a 5.2 5.1 5.0 4.4 4.3b 4.3a 4.3 4.2a 4.2 4.1 4.0a 4.0 3.5a AC/DC ModuleAcoustics ModuleCFDChemical Reaction EngineeringDefinitions and operatorsFluid FlowGeometryHeat TransferLiveLink productsMaterials and functionsMEMSMeshMicrofluidicsPhysicsResults and visualizationRF ModuleSolvingStructural Mechanics List all discussions Share this pageEmailLinkedInFacebookTwitterDeliciousDiggStumbleuponMore services... Out of memory comsol out of memory in stationary solver during LU factorization Topics: Memory, Errors, 5.2a, Solving Thread index | Previous thread | Next comsol discussion forum thread | Start a new discussion RSS feed | Turn on email notifications | 20 Replies Last post: comsol out of memory during assembly July 27, 2016 5:47am UTC Mohammed Hussain August 26, 2009 6:52pm UTC Out of memory during LU factorization Hi there, I am a new member in the COMSOL community. I am trying to solve a simple 3D problem
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having diffusion and chemical reaction within the subdomain. However, I am getting this message "out of memory during LU factorization." Is my computer running out of memory to solve this particular problem or should I use a better solver to solve this problem? Could anyone share his/her experiences with COMSOL? Many thanks, Mohammed Reply | Reply with Quote | Send private message | Report Abuse F Toor August 26, 2009 8:30pm UTC in response to Mohammed comsol login Hussain Re: Out of memory during LU factorization Hi Mohammad, Yup your computer is running out of memory. Are you using UMFPACK or SPOOLES solver? SPOOLES is supposed to use less memory though it is also more unstable. Reply | Reply with Quote | Send private message | Report Abuse Mohammed Hussain August 26, 2009 10:36pm UTC in response to F Toor Re: Out of memory during LU factorization Hi Fatima, Many thanks. I tried both the solvers (UMFPACK and SPOOLES), but still couldn't resolve the problem. How about using different mesh elements? Mohammed Reply | Reply with Quote | Send private message | Report Abuse Manohara Mariyappa August 27, 2009 2:41am UTC in response to Mohammed Hussain Re: Out of memory during LU factorization you might want to go for coarser mesh. I had the same memory problem for some analysis but it worked when i scaled my geometry which reduced the number of degrees of freedom to solve for. Manohar Reply | Reply with Quote | Send private message | Report Abuse Ivar Kjelberg August 27, 2009 8:05am UTC in response to Mohammed Hussain Re: Out of memory during LU factorization Hi there is another way to get a little more RAM, works successfully for me, by using the server-client approach as then the client can be swapped during the solve processing, this has
model i'm running is a time dependent solver for Heat Transfer Module. Does anyone know how to fix it. Regards comsol help vishnu sharma Thread at a glance: Previous Message by Date: AW: COMSOL
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3.2: exporting the FEM structure and ma nipulating it, reimporting Hello, in version 3.2a: fem.sol is an FEMSOL object! Try help femsol at the command line of COMSOL script to see the options. Step by step: If you want to do something like C=A+B - export: A - export: B - http://www.comsol.com/community/forums/general/thread/581/ construct: C = A - add: C.sol = femsol(A.sol.u+B.sol.u) - import: C Hope that help's, Thomas Loose -----Ursprüngliche Nachricht----- Von: Felicity Splatt [mailto:felicity.splatt@xxxxxxxxx] Gesendet: Montag, 16. Januar 2006 15:09 An: FEMLAB_Users@xxxxxxxxxxxxxxx Betreff: [FEMLAB_Users] COMSOL 3.2: exporting the FEM structure and manipulating it, reimporting Hello, recently we upgraded to Comsol 3.2 and I appreciate (in general) the improvements (with the exception of them moving the http://osdir.com/ml/science.analysis.femlab/2006-01/msg00048.html previously standary iges import to an optional module). However, I am having some problems using the FEM structure. In Femlab 3.1 I would export my FEM structure to Matlab, and then I would be able to manipulate it. Specifically, I am working in Electrostatics, and I would be able to solve a problem with one set of an electrodes at a voltage, export that solution in a structure (lets call it A), solve the problem again with a different set of values, and again export the fem structure (call this one B). Then, I was able to add these two solutions using: added = A (to create a structure called "added" with the same entries as A) added.sol = femsol(A.sol.u + B.sol.u) (to make the sol field equal to the sol field of A plus the sol field of B) It seems to me now that "FEMLAB with MATLAB" is now, basically "Comsol Script". When I "export" my fem structure, Comsol Script opens and my structure is there. I can manipulate it, however I can't import it back into Femlab - I get either a Error: 9040 Fatal er