Author Topic: singular value decompostion failed  (Read 3435 times)

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Offline Jenny

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singular value decompostion failed
« on: June 18, 2015, 21:35 »
Hi, all.

I met a problem when I conducted the calculation with bias between two electrodes in the device. Parallel calculation was running with five computers. The error was running as follow:
*** Back Engine Exception : Singular value decomposition failed
*** Location of Exception: mathutils.cpp:870

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more infomation.
*** Back Engine Exception : Singular value decomposition failed
*** Location of Exception: mathutils.cpp:870

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more infomation.

The script I used is attached here. Can anyone give me a help on this?

Thank you very much.

Jenny

Offline Umberto Martinez

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Re: singular value decompostion failed
« Reply #1 on: June 19, 2015, 13:35 »
Thanks for reporting the error message.
We are investigating the issue.
Please, also specify which ATK version you are using and if possible add log file.
Keep you posted.

Offline Jenny

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Re: singular value decompostion failed
« Reply #2 on: June 19, 2015, 19:10 »
Hi, Umberto Martinez.

Thank you for your reply. I'm using atk-13.8.1 version. The log file seems to be too large to be attached here. Sorry.

Jenny

Offline Jenny

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Re: singular value decompostion failed
« Reply #3 on: June 19, 2015, 19:11 »
Also, I tried to do the calculation without parallel computers. It seems ok. So I'm not sure whether it is related to the parallel calculation or not.

Best,

Jenny

Offline zh

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Re: singular value decompostion failed
« Reply #4 on: June 21, 2015, 01:08 »
Have you tried the parallel calculation with 2^n (n=1, 2, 3,...)  CPU cores instead of 5 CPU cores?

Offline Jenny

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Re: singular value decompostion failed
« Reply #5 on: June 22, 2015, 18:15 »
You mean like 2, 4, 8 CPU cores instead of 5? I'll try and see. But why?

Jenny