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Save a log file on each iteration step with parametric sweep.
Posted 7 feb 2012, 15:35 GMT-5 Results & Visualization, Studies & Solvers Version 3.5a, Version 4.2a 2 Replies
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In COMSOL 3.5a I can run parametric sweep over parameter “A” and write a global variable (“B” for instance) into a log file during calculation. With each iteration step I have an updated log file with two columns A and B.
Now I am trying to move to COMSOL 4.2a and to do the same parametric sweep with variable export into one txt file on each iteration step. I tried the following procedure:
1) Add a boundary probe of integral type. This probe value I want to export in to the log file.
2) Add a parametric sweep node under the study 1 node.
3) Add a data node under Export node and set the file name.
4) Add a Export to file node under Study->Job configurations->Parametereic and select Data 1 from Run list.
5) Deselect Clear previous and Add parameters to filename checkboxes.
And I am getting the effort massage: “Error in sweep: could not overwrite existing file.”
Is there probably an easy way to save the log file with “A” and “B” columns on each iteration step? In version 3.5a there is a very simple solution for log file export, see picture 6 in the attachments.
Thank you,
Maxim
Hello Maxim
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did you find a way to avoid the error message?
With Version 4.3b I still get the same error message that you mentioned.
I use the "export to file" node in a parametric sweep.
And, as you also did, I cleared the "clear previous" checkbox. According to COMSOLs documentation, this should create one single exported file including the results of every single sweep run.
But instead I get the error message "“Error in sweep: could not overwrite existing file” which you got, too.
So in case you found the reason for that error I'd be very interested in your solution.
Thanks and best regards,
Juergen
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I need one log file per parametric sweep
OR one log file for all parametric sweep