Running two loop together at the same time

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dsq dq
dsq dq on 19 Aug 2021
Answered: Raymond Norris on 19 Aug 2021
Hey everyone !
I am currently trying to run the two while loops at the exact same time. When the user click on a button I would like somethings like this to happen :
function start_Callback(hObject, eventdata, handles)
while
xxxx
end
while
xxxxxx
end
I would like this two while loop to run together (I hope it's understandable ^^' ). I dind't find the solution to my problem on the forum, so sorry if it has already been asked ....
Thanks you very much for your anwser !

Accepted Answer

Raymond Norris
Raymond Norris on 19 Aug 2021
Try using parfeval, such as the following pseudo code
function start_Callback(hObject, eventdata, handles)
pool = gcp('nocreate');
if isempty(pool)
% Explictily start a 2-worker pool
pool = parpool('local',2);
end
f1 = pool.parfeval(@while1,...);
f2 = pool.parfeval(@while2,...);
A couple of notes
  1. You might want to start a pool elsewhere or with a different size.
  2. You'll need to refactor your while-loops as "units of work". That is, write them as subfunctions that can be called on their own. Look at the parfeval doc for additional arguments required (input/output, etc.).
  3. After spawning the code, you might need to cancel the tasks.

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