Way to tell % complete of script

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Chris
Chris on 17 Aug 2011
Is there a way to get an elapsed time or estimated time left or even a percent left of a script that is running?

Accepted Answer

Jan
Jan on 17 Aug 2011
The elapsed time is easy:
iniTime = clock;
for i = 1:1000
... your calculations here
pause(0.02); % For demonstration only
fprintf('elapsed time: %d sec\n', etime(clock, iniTime));
drawnow;
end
Estimating how long the processing will run, needs additional knowledge about the calculations. In the example all iterations of the FOR loop will use a similar amount of time. But if you use "pause(rand*1000)" there is no chance for a fair estimation. Then only showing the percentage of remaining iterations is meaningful.
If your script is not based on a loop, other messages might be helpful:
fprintf('Initialize... ');
pause(0.5);
fprintf('ready\n');
fprintf('Processing stage 1... ');
pause(0.5);
fprintf('ready\n');
... etc

More Answers (2)

David Young
David Young on 17 Aug 2011
If the script is already running, no.
If
  • the script has not yet started running
  • you can identify the main loop
  • each iteration of the loop takes a reasonably consistent length of time
  • the total number of iterations of the loop is known in advance
then you can insert a statement in the loop to print out the percentage of iterations complete, or display a progress bar using waitbar. There are examples in
doc waitbar
To get the elapsed time, you can use tic and toc. To get the cpu time used, you can use cputime.

Daniel Shub
Daniel Shub on 17 Aug 2011
If you have not started the script yet, but want the script to tell you how far you are along once you start it there are a number of submission on the FEX: http://www.mathworks.com/matlabcentral/fileexchange/?term=progress+bar
If the script is already running, then in general you cannot find out where it is. If you have a good idea of what the memory/processor/network profile should look like, then maybe you could inspect those and figure out where you are.

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