Invalid file identifier in Parfor loop

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xiaohuo
xiaohuo on 10 Mar 2022
Commented: xiaohuo on 11 Mar 2022
How to correct this error when using the parfor loop? Any suggestion to solve this issue? Thanks.
Invalid file identifier. Use fopen to generate a valid file identifier.
filename01 = "D:\...\testParfor"; % filename01 file parth
parfor j = 1:nk2_node
% File path
filename_HD = sprintf('%s%s%d',filename01,"\zone_case0\profile_",j);
Cal_cont = HD_Nod_Inf(filename_HD);
...
end
  9 Comments
Walter Roberson
Walter Roberson on 11 Mar 2022
for i=1:199
k = i + Line_nod_sub-1-199;
Cal_cont(i,1:22) = str2num(newtline_Nod_sub{k}); % error
end
Suppose that 50 lines were read, so Line_nod_sub = 50. First iteration of the loop, i is 1, and k = 1 + 50 - 1 - 199 which is 51-200 which is -149 . Out of range.
Suppose that 205 lines were read, so Line_nod_sub = 205. First iteration of the loop, i is 1, and k = 1 + 205-1-199 = 6, which is okay. Last iteration of the loop, i is 199, and k = 199 + 205 - 1 - 199 = 204, which looks okay.
So I guess your loop might be okay -- but not until after you enforce that Line_nod_sub is at least 200.
xiaohuo
xiaohuo on 11 Mar 2022
Yes, I also think so.
The reason why the code does not work is that the exe fails to run the model. So there is no output values in that file.
Thanks for your help and time.

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