How can I run a code for a pre-defined time duration?

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carlo24 le 10 Juin 2021
Hi everyone, how can I execute a code only for a limited time duration?
The problem arises since I've a very large database, in which only few elements seem to enter infinite loops (either in function1 or in function2, as reported below); to be thorough, the problem occurs in function1 or function2 at level of fmincon or ode15s, respectively.
The idea would be to run the code for all elements and for those precise elements entering infinite loop to move onto the next element once the limit of time duration is reached.
The code I've implemented is like the following:
for i=1:NumElem
I've already tried to implement something like this:
for i=1:NumElem
while toc<300
But with no results since infinite loops occur inside function1 or function2.
Thanks in advance!!
  2 commentaires
Mario Malic
Mario Malic le 10 Juin 2021
MaxTime is the option for fmincon.

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Shadaab Siddiqie
Shadaab Siddiqie le 15 Juin 2021
From my understanding your functions are struck in infinite loop, and you want to stop this when it happens. You can resolve this using one of these ways:
  1. You can use different algorithms like 'interior-point' or 'sqp' algorithm. These algorithms have better safeguards against “Inf” and “NaN” values.
  2. You can set the "MaxSQPIter" property in the OPTIMSET function to a finite value. Ideally, it should be a multiple of the larger of the number of variables or number of constraints.
  3. You can use MaxIteration property of fmincon to stop the loop after certain number of iterations.

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