Question on parallel testing 1000 UUT

I am starting to consider an architecture for a TS system that needs to handle several hundred, and possibly over a thousand UUT's simultaneously in parallel from a single PC w 4GB ram
Anyone have examples of such a high socket count system? Any tips, caveats? I am concerned about a TS system being capable of that.
I expect that I would need a custom Serial Entry dialog (perhaps table based) and that I would NOT display the exectuion/report window for the UUTS although I may include option to display that for a *specfic* UUT selected by the operator
Regards
Vijay

NIExpert,
As Lindsey's link and Jiggawax's tests indicate, there is no hard limit on the number of threads/UUTs you can run at once, but your computer will likely protest well before you hit 1000 UUTs. Even if your machine does not hit an OS-enforced thread limit, memory will become a concern, and the tests will likely take much longer to complete due to your computer's CPU having to split its time between all of these threads.
I agree with Jiggawax that if you want to do this on one machine you would probably be best off doing the tests in waves so that not all 1000 units are being tested at once. It sounds like you'd want the Parallel model so that you can start/stop individual UUTs as needed, and the Parallel model would probably be better suited for this type of approach anyway.
The other option would be to distribute the test to multiple machines. That would allow you to test more devices at once and test them more quickly since the CPUs will not need to switch between as many threads. This approach has a few advantages, for example,you gain hardware redundancy (if a tester goes down, you have other machines that can continue to test). Of course, the trade-off is that there is additional expense in maintaining another tester.
This sounds like an interesting application and I hope you are able to find an approach that best suits your needs. Let us know if you have any more questions about it.
Daniel E.
TestStand Product Support Engineer
National Instruments

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Question on parallel testing 1000 UUT

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