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How can I degug inside a parfor loop?

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Farook Sadarudeen
Farook Sadarudeen 2017 年 10 月 26 日
回答済み: zhehao.nkd 2022 年 8 月 5 日
When I insert breakpoints inside a parfor loop it is never stopped. In this case how can I debug inside a parfor loop?
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KALYAN ACHARJYA
KALYAN ACHARJYA 2017 年 10 月 26 日
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
KSSV
KSSV 2017 年 10 月 26 日

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採用された回答

Edric Ellis
Edric Ellis 2017 年 10 月 30 日
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.
  1 件のコメント
Farook Sadarudeen
Farook Sadarudeen 2017 年 11 月 1 日
Thanks for the answer. This helps to Debug.

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その他の回答 (2 件)

NAGAVARSHINI MAYAKKANNAN
NAGAVARSHINI MAYAKKANNAN 2020 年 6 月 21 日
Change the parfor to for debug it and then change for to parfor

zhehao.nkd
zhehao.nkd 2022 年 8 月 5 日
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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