4/16/2024 0 Comments Comsol 3.5a free download![]() ![]() Comsol multiphysics download for Windows 7 With further than 30 factors added to the software, you can use the simulation space with a variety of physical connections and colorful tools to perform electrical, mechanical, fluid inflow, and chemical systems. Using COMSOL Multiphysics 6.1, you’ll be suitable to calculate the Geste of different or connected physical models. ![]() The hard way (start nnect to server.restart server.Download COMSOL Multiphysics 6.1 Latest Version is a general-purpose software grounded on advanced numerical models for use in modeling and bluffing drugs- grounded problems. works for me, hope it works for you, enjoy! I hope comsol will not solve this issue, it took me hours to figure it out!!! Pause(4) % some time to start the server peacefully. !C:\COMSOL42\bin\win64\comsolserver.exe & mph and copy it in comments in your script): mph file in order to modify it in a loop because you don't see the content of the file on the screen with mphload, of course you can generate a. The elegant way with mphload (but you have to know the content of the. A real general purpose script must work for every number of frequency steps, not a limited one! In my scripts I need to invocate the function "postint()" (and ohters) many times, and the number of time that I call it should change depending on the number of frequency steps that I want in my simulations. with 512MB of heap space, it reaches little more than 1GB of RAM but it still crashesĪnyway the solution that they suggest isn't very usefull: it simply moves the limit of the crash a little bit further, but it does not resolve the problem at all. with 128MB of heap space, comsolserver.exe stop working between 300-400MB of RAM space It simply changes the maximum memory that can be used by "comsolserver.exe" before matlab crashes. I've changed the default value of 128MB to 512MB, but the problem obviusly remains if ou consider many iterations. In MATLAB 2010 it's easy to define the heap space that java allocate for Matlab through the GUI in "File->Preferencies->.". ![]() It isn't easy to implement, I had to use a bunch of DOS commands, but it works. Once closed, the original session will restart a new MATLAB session and COMSOL Link. If the file does not update its timestamp within five minutes (assumes COMSOL has crashed) or if there is a java heap error, then the script will close all processes belonging to matlab.exe (except for the original session) along with the comsolserver process. This session writes to the file before every COMSOL request. This script monitors the write activity of a file created by the new MATLAB session. I have found a hard way around this through MATLAB by making a script that will start a new MATLAB session which runs the COMSOL Link. ![]() Note that this statement is undocumented, experimental and may disappear in a future release of Comsol. This line will disable the storage of history information (which is rarely used by script anyway) and may help you. One is mentioned in this knowledge base entry:Īlternatively you can try to inset this line at the top of your m-file: There are unfortunately some memory leaks that we are working on right now to remove for the next release.įor the current release you have a couple of options. Here is the message I have received from COMSOL: As far as I can determine from the documentation mphinterp is supposed to interpolate the value of a given expression based on the existing solution vector, so I see no reason why it should need to permanently increase the amount of memory used by the model.ĭoes anyone know why this is happening? Is this a bug (memory leak, or something else)? If not, is there any way to free up the memory used once I have the interpolated values? I can manually set the heap allocation to be larger, but I'm rather curious why this is occurring in the first place. This is quite a problem for me, since I do in fact need a large number of points in this grid. At this point, trying to do pretty much anything with my model returns the out of memory error, since there seems to be no way to unallocate this RAM, and I have to quit and restart COMSOL. So, even if I call mphinterp at a single point over and over the RAM being used by COMSOL will steadily increase until I hit my heap limit and get an error. I played around with this a bit and noticed that ANY call to mphinterp seems to permanently (as far as I can tell) increase the amount of RAM being used by comsolserver.exe. However, I have been running into the problem that if I make the grid too large I run out of heap memory.Īt first I thought that this was due to evaluating too many points simultaneously, so I split the evaluations up but got the same problem. I have a large RF simulation, and I need to get the value of the electric field on a rather dense rectilinear grid. ![]()
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