Build array out of memory

Question

Need help im new to labview im posting very simplified example of code over a few hours im getting out of memory error normaly this would be sensor data being colected every 2-4 sec and writen to a csv file. 
Attachments:
build array example.vi ‏19 KB

Answer 1

If you dramatically speed up the loop (e.g. remove all waits), you will obviously run out of memory in the queue because you generate numbers much faster than they can be written to disk. You need to ensure that the generation rate is less than the average maintainable speed of the disk IO.
Using write to spreadsheet file is also a low performance option, because of the constant file open/close operations and all the formatting steps. If speed matters, use a binary file and low level file IO. Open it once before the loop, and just append inside the loop. Close it when the loop ends.
Maybe you should set an upper size limit for the queue?
I don't have the ogtk subVI, but here's how your code could be simplified (not showing the file IO suggestions). The browse option for the file controls also should be "new or existing".
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Attachments:
build array example_MODCA.vi ‏10 KB