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[Application Builder] Linux compatilibity problem
Posted 04.06.2019, 06:50 GMT-4 Simulation Apps Version 5.2 4 Replies
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I'm currently working on an application on Windows created with the Application Builder. When running this application on Linux (or Mac), everything mostly works. However, the following line works perfectly on Windows but not Linux/Mac:
model.study("std1").create("opt", "Optimization");
The optimization module is installed on both computers. I would like to know what could be causing this problem only on Linux and Mac.
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Hi Joao, please include context details and description of your source code. Otherwise its hard to help you. Thanks Peter
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Joao already shows the source code that works in Windows but not in Linux. I could check in a minute that it works in Windows. I don't (yet) use Linux/Mac though. So any Linux/Mac expert can try to reproduce the issue as a first step. Any takers?
Cheers Edgar
-------------------Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
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Linux user here. I will try to reproduce the problem later today, but it definitely rings a bell : I think I remember not being able to access model.opt() from java once, so this and that could be related.
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Ok, let's take this example from LiveLink for Matlab documentation for Comsol 5.2:
model = ModelUtil.create('Model'); geom1 = model.geom.create('geom1', 3); geom1.feature.create('blk1', 'Block'); geom1.run; phys = model.physics.create('ht', 'HeatTransfer', 'geom1'); model.physics('ht') solid = phys.feature('solid1') solid.set('kmat', 1, 'userdef'); solid.set('k', '400'); hs = phys.feature.create('hs1', 'HeatSource', 3); hs.selection.set([1]); hs.set('Q', 1, '1e5'); temp = phys.feature.create('temp1', 'TemperatureBoundary', 2); temp.selection.set([3 5 6]); temp.set('T0', 1, '300[K]'); model.mesh.create('mesh1', 'geom1'); std = model.study.create('std1'); std.feature.create('stat', 'Stationary'); model.study('std1').create('opt', 'Optimization')
The very last line works under Linux as well.
Only when I removed the next to last line "std.feature.create('stat', 'Stationary');" and run it freshly, I got this error:
" Java exception occurred: Exception: com.comsol.util.exceptions.FlException: Operation cannot be created in this context (rethrown as com.comsol.util.exceptions.FlException) (rethrown as com.comsol.util.exceptions.FlException) Messages: Operation cannot be created in this context
Operation cannot be created in this context
Operation cannot be created in this context.
- Operation: Optimization
Stack trace: at com.comsol.clientapi.engine.c.handleException(Unknown Source) at com.comsol.client.interfaces.f$d.e(Unknown Source) at com.comsol.client.interfaces.f.a(Unknown Source) at com.comsol.client.interfaces.f.runAndWait(Unknown Source) at com.comsol.clientapi.engine.APIEngine.runMethod(Unknown Source) at com.comsol.clientapi.impl.StudyFeatureListClient.create(Unknown Source) Caused by: Exception: com.comsol.util.exceptions.FlException: Operation cannot be created in this context (rethrown as com.comsol.util.exceptions.FlException) Messages: Operation cannot be created in this context
Operation cannot be created in this context.
- Operation: Optimization
at com.comsol.clientapi.engine.c.handleException(Unknown Source)
at com.comsol.client.interfaces.f.a(Unknown Source)
at com.comsol.client.interfaces.f.processCommandAnswer(Unknown Source)
... 5 more
Caused by: Exception: com.comsol.util.exceptions.FlException: Operation cannot be created in this context Messages: Operation cannot be created in this context. - Operation: Optimization
at com.comsol.model.method.PropFeatureListMethod.create(Unknown Source)
at com.comsol.model.internal.impl.PropFeatureListImpl.a(Unknown Source)
at com.comsol.model.internal.impl.StudyFeatureListImpl.b(Unknown Source)
at com.comsol.model.internal.impl.StudyFeatureListImpl$1.a(Unknown Source)
at com.comsol.model.internal.impl.StudyFeatureListImpl$1.execute(Unknown Source)
at com.comsol.model.clientserver.ClientManager$1.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
" Hence, I suppose the problem might be that command model.study('std1').create('opt', 'Optimization') is executed prior to the code creating the stationary study.
Peter