Break point in parfor loop

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Yoav Livneh
Yoav Livneh on 17 May 2011
I am trying to find a way to include a cancel button to a code that uses PARFOR. I tried using the same technique used in regular FOR loops (like the cancel button in WAITBAR) but a PARFOR loop cannot contain commands like BREAK or RETURN. Is there a way around this?
Thanks.
  2 Comments
Andy
Andy on 17 May 2011
Are you trying to cancel the operation part way through (like with Ctrl+C)? Or are you trying to duplicate functionality like:
for ix=1:10
if ix == 6
break
end
end
If the latter, keep in mind (from the documentation of parfor): "Note: Because of independence of iteration order, execution of parfor does not guarantee deterministic results." The reason parfor cannot contain break or return is because of this independence of iteration order.
Yoav Livneh
Yoav Livneh on 18 May 2011
I am trying to cancel the operation part way through, exactly like Ctrl+C.

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Answers (1)

Arturo Moncada-Torres
Arturo Moncada-Torres on 18 May 2011
Quan Quach has an excellent tutorial regarding this issue. I think href=""<http://blinkdagger.com/matlab/matlab-gui-tutorial-how-to-stop-a-long-running-function/</a> this> may solve your problem.
Regards,
Arturo M.
  1 Comment
Yoav Livneh
Yoav Livneh on 18 May 2011
Thanks for the answer. This does look like an elegant solution but how do I incorporate this into a parfor loop?

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