Retrieve data after memory issue error

[arm_labview]

Greetings forum,

I had a long running experiment which took 3 days. Today it finished but gave me the error (attached image).

Once finished the labview stopped, I got the error and my data files were not saved. I was wondering is there a way I could retrieve unsaved data?

Also to prevent this from happening, is there a way to remove cache in labview?

Thanks for your help

[cbutcher]

First question - probably not. Once the data is gone, if you didn't save it, it's gone.

Second question - sure thing. It sounds a lot like you're using Build Array or similar to create a very large data array over time, and you're continuously increasing the size of this array until your program ends. Over 3 days, even a moderate acquisition rate can cause a problem.

The solution is to look at something like the Producer/Consumer architecture, and then write to disk in your consumer (the producer is your current data acquisition loop). You can also display to a graph whilst running.

[thols]

Also have a look at TDMS to simplify streaming lots of data to file. It will flush the data to file automatically (threshold can be set) so you will never lose it again.

[wiebe@CARYA]

The code could make unneeded copies of the 'big array'. Preventing this might make 3 days fit.

If the data is critical, I'd stream to file ASAP though.

And of course the memory issue could be a memory leak...

We'd need details and\or code...

[JÞB]

It is nearly impossible to tell you how to fix your code without seeing it