Memory problem with many data

[laheurte]

How I can used labview with big files data (more than 500Mo)?
When I try to import or view on graphic object data coming from measurement diveces (200kHz/samples 8 chanel for 30 second), memory on the pc is saturated by labveiw, does it's possible to work directly on the hard disc to use labview correctly without a big big pc?

THanks for the answer and sorry for my english!

[ElSmitho]

Salutations,

You'll have to excuse mine as well, never was very good at the class.

When you're using a large data file, you begin to take up the computer's Memory. I'm not exactly sure what you're attemping to do with the data, however, is it possible that you only take in certain pieces at a time. Like segment the data and do the analysis on those segments, storing only the necessary information in shift registers, instead of trying to load it all at once?

Maybe provide more information about what you're trying to do?

Sincerely,
ElSmitho

[SanaaT]

Hello Laheurte,

The first solution will be to save data in binary format, so the size of the file will be smaller than if you save data in ASCII format.
Please, see this document that explain how to write and read binary files using LabVIEW :
http://digital.ni.com/public.nsf/websearch/A45A757C14D3421986256BEA006C547A?OpenDocument

Then, I suggest you ro use the function : "Flush File" that you can found on "Palette Functions>>File I/O>>Advanced".
This function writes any buffered data on disk and updates the directory entry.
To have help about this function, place it on the block diagram, right click on it, and select : "Help".

Please see the document below :
http://zone.ni.com/devzone/conceptd.nsf/webmain/732cec772aa4fbe586256a37005541d3

Regards,

Sanaa T
National Instrument France