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Calculating time for an external application executated from matlab

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LUSSI
LUSSI 2012-11-28
关闭： MATLAB Answer Bot 2021-8-20
Hello everybody !
I noticed one thing which i don't understand : I made a batch file to execute a finite element method software and when I execute it manually, the calculation lasts 5 minutes. When I use the dos (or system) function in Matlab to execute the same batch file, the calculating time is 25 minutes !!
I would like to understand why and if a solution exists.
Thank you !
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LUSSI
LUSSI 2012-11-29
Are you rrunning out of system memory when matlab is open? Nop !
How man processors do you have? 16 cores
Was your computer doing anything else at the same time? Nothing !
Is it repeatable? i.e. does it consistently take 5 times longer? Yes, it's repeatable !

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Babak
Babak 2012-11-28
in MATLAB script
tic
% your calcs
time = toc
gives you the time in seconds.

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