Error using batch caused by error using save

Question

Sascha 2013-8-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/84466-error-using-batch-caused-by-error-using-save

回答： Ryan 2017-11-27

Hello together,

I tried to make my first steps in the command batch. When I try to make a little example, like in the online documentation, I get an error, which I couldn't handle.

I made a script (exampleParfor.m) and testet it (it runs fine). By executing with the run-button of the editor, I choosed "Add to path". In the next step I tried to make a batch-job with this script, but I get this error:

j = batch('parforExample')
Error using batch (line 177)
An unexpected error occurred accessing properties: "CaptureDiary" "CreateTime" "DependentFiles" "Diary" "Error" "ErrorIdentifier" "ErrorMessage" "FinishTime" "Function" "InputArguments" "Name" "NumOutputArguments" "OutputArguments" "StartTime" "StateEnum" "Worker"
Caused by:
  Error using save
  The data no longer exists on the device.

I even tried to change the path in the command window, but the error still occurs. The operation system I am using is Linux 64bit and Matlab R2013a

Many thanks in advance,

Greatings

Sascha

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Jill Reese 2013-8-28

Can you post the contents of exampleParfor.m?

Walter Roberson 2013-8-28

Do you have a "clear" statement in your code? And is it a "function" with a matching "end" statement (forming a static workspace) ? Or how are you determining the variables to save? Just using save with a filename and no variable name?

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Answer 1

Ryan 2017-11-27

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https://ww2.mathworks.cn/matlabcentral/answers/84466-error-using-batch-caused-by-error-using-save#answer_293417

在 MATLAB Online 中打开

I have also had this error. The problem tracks down to a save() line within FileSerializer.m ... the batch command is saving task information into a batch job folder, and the task data exceeds the size for the default save option. Two fix options: (A) Change your default save option to 7.3 or (2) actually patch FileSerializer itself such that even if user save options are set to the faster -v6 save, it still works when task files are too big.

save(filename, '-struct', 'data', saveFlags);

becomes ...

try % -- TASK FILE SIZE CAN CAUSE THIS TO CRASH!, adding -v7.3 averts failure 
      save(filename, '-struct', 'data', saveFlags);
catch ME
      save(filename, '-struct', 'data', saveFlags,'-v7.3');
end