Can I call 32 - bit 64 - bit VI subVIs (or vica versa) in LV 2011?

Howdy-

I know that my question probably stems from my limited understanding of the underlying architecture of the LV, but it arises as I plan for the following in my lab scenario:

(1) the system will include a 64-bit running Windows 64 - bit 7 (Professional) with 24 GB RAM PC.  One or more devices of cRIO will be attached to the need.

(2) all LabView software will be written and run on the 64-bit computer (with the exception that operating on devices of cRIO).

(3) at certain times within an automated test sequence, a digitizer set high speed will have to deliver about 10 GB of data in memory, analyze it and write the results to disk (hence the need for 64 - bit).

(4) at this point, I can't say for certain which, if any, of the different modules and Toolkits available may be useful for us (that's why the desire to 32-bit compatibility).

Naively, the points above suggest one of two approaches to the writing of my routines for control and measurement:

b write everything in 32-bit BT, with a few calls specialized to one Subvi 64-bit if necessary.

(b) any write in LV 64-bit, with calls to subVIs 32-bit if necessary for reasons of compatibility.

So, are either (a) or (b) possible, and if so, are there reasons to prefer one approach rather than the other?  Pointers, or links to relevant reading, would be much appreciated.

Thank you all for your time and have a great day.

Which is correct and a better formulation of what I was saying. Essentially, once you have compiled the app, you're done - you have set the number of bits. I assumed the OP talked about the external dll call screws, but it is not entirely clear.

Tags: NI Software

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