decrease the elapse time

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Asliddin Komilov
Asliddin Komilov on 24 Jul 2019
Answered: Asliddin Komilov on 4 Aug 2019
this set of files organized to solve 'environment' function with ranges of different variables. I followed all possible instructions but the elapse time is growing with each iteration inside the script 'Ta_I_yearly_by_azimangle' so I have to take bigger steps. Maybe the whole thing could be organized some other way to make it faster, I don't know, so I need your help here, thanks.
Rik on 24 Jul 2019
You should use the actual profiler. In most releases that is called 'run and time'. That will show you a breakdown by function and line by line.

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Accepted Answer

Asliddin Komilov
Asliddin Komilov on 4 Aug 2019
appointing to 'simple' and 'int16' made huge difference

More Answers (2)

Sulaymon Eshkabilov
Sulaymon Eshkabilov on 24 Jul 2019
You'd need to associate all of your calc's into one function file and no need to save all variable/calc values from every iteration. Save the only ones that you'd need as outputs from your main function file. ALso, put all of your external fuinction files as a nested functions within your main function file. All these steps should speed up your simulations.
Good luck.
Asliddin Komilov
Asliddin Komilov on 25 Jul 2019
as I wrote before, the whole code 'environment' is not of concern because it takes the same time each iteration around 28 seconds, but something else is happening outside of it which increase the elapse time in each iteration differently, as you can see above same iteration takes 38 seconds on time and next time its 428 seconds, and there is no distinct 'signature', the time is not increasing or decreasing with each next iteration, so if I run it once again, ellapse times for 5 differnt 'i' will be different. That is what I cannot understand why it is happening, and how to improve.

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Jan on 25 Jul 2019
The output of the profile is useful - thanks.
The most time is spent here:
[days(:,:,i), time(:,:,:,i), I(:,:,:,i), Ta(:,:,:,i), ...
angle(:,i), Ir(:,:,:,i), Id(:,:,:,i), Gincl(:,:,:,i), r(:,:,:,i)] = ...
But this takes between 36 and 376 seconds. This is not an effect inside Ta_I_yearly_by_angle.
My guess is, that your memory is exhausted and sometime the slow disk caching is used. So please check the memory consumption. during the code runs. Pre-allocating is a good programming style already, but sometimes only more RAM helps.
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Asliddin Komilov
Asliddin Komilov on 25 Jul 2019
thanks, I also had a thought it could be the computer, but I have 8g ram and 64 bit system, shall I uninstall some things? I have 2016a matlab, shall I look for a newer version? I need a solution because I need variable 'i' be not 5 but 36 and also variing 'r' variable for the best result.

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