How can I degug inside a parfor loop?

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Farook Sadarudeen
Farook Sadarudeen 2017-10-26
回答： zhehao.nkd 2022-8-5
When I insert breakpoints inside a parfor loop it is never stopped. In this case how can I debug inside a parfor loop?
  2 个评论
KALYAN ACHARJYA
KALYAN ACHARJYA 2017-10-26
Please show your code, have you use break statement within parfor loop with a condition?
Check it out, it may be helpful
https://in.mathworks.com/matlabcentral/answers/4942-break-in-a-parfor-loop-processing-time-example-to-compare-it-with-a-for-loop

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采纳的回答

Edric Ellis
Edric Ellis 2017-10-30
You can debug code called from the body of a parfor loop if no parallel pool is open, but unfortunately you cannot debug the body of a parfor loop itself. You can force the parfor loop to run in the desktop MATLAB by appending the optional "number of workers" argument, like so:
parfor (idx = 1:10, 0)
out(idx) = myFcn(idx);
end
With that code, you can set breakpoints inside myFcn.

更多回答（2 个）

NAGAVARSHINI MAYAKKANNAN
Change the parfor to for debug it and then change for to parfor
zhehao.nkd
zhehao.nkd 2022-8-5
For those who are seeking for the solution, there is another possible option by using parfor and try-catch:
parfor k = 1: len
try
% your code
catch ME
% record the iteration index,k
end
end
% Then youy know which iteration caused a bug alert

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