Creating table columns in a parfor loop

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asdfg asdfg 2024-1-6

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https://ww2.mathworks.cn/matlabcentral/answers/2067146-creating-table-columns-in-a-parfor-loop

评论： Raymond Norris 2024-1-10

Found this buggy behaviour when creating tables in a parfor loop. The first example (doesn't work) causes the parallel pool worker to crash and gives a "Segmentation Violation" error in the crash dump file. However, in the second example (works), including any character that needs escaping (i.e. -, +, etc) in the table column title avoids the error.

%doesnt work
parpool('local', 1);
parfor i=1
     temptab = table();
     temptab.('var1') = ['a';'b'];
end
%works
parpool('local', 1);
parfor i=1
    temptab = table();
    temptab.('var-1') = ['a';'b'];
end

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Matt J 2024-1-9

R2023b Windows 10.

Raymond Norris 2024-1-10

Good thought, @Damian Pietrus. R2024a prerelease also works for me. So,

@asdfg asdfg has problems with R2023b (Mac)

@Damian Pietrus and @Raymond Norris have problems with R2023b (Windows 11)

@Matt J works fine with R2023b (Windows 10)

My next thought is the release Update. But I'm runnig GR (Update 0) and Damian's running the latest (Update 5).

@asdfg asdfg if you need this working on macOS R2023b, I'd suggest contacting MathWorks Technical Support. Otherwise, consider trying R2024a Prerelease.

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