Multiple can write to screw the worksheet cause a change to rewrite?

In my program I use now two parallel loops, which have both a writing on spreadsheet VI written to the same file path.  I did not really care order lines are added to the worksheet, as data from two different loops can be differentiated, but what I was asking, is that it is possible for the two live run simultaneously and have one change to crush the other, so there is a line missing in the final result.  I have seen that it is a risk for writing in local variables in parallel loops, but have not seen anything be it specifically to write to an external file.

Thanks for your help.

Writing on a spreadsheet file is not reentrant, while an instance of the latter can run at a time.  As long as you are concatinating, I don't expect any loss of data.

However, a better solution would be to have another loop to process your file IO.  Then you can open it and keep it open.  You send data may be written using a queue.  And do not forget to close the output file.

Tags: NI Software

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