Unexpected behavior when running parallel while loop on quad core

Hello,

I am working on a record and playback application. Well, I use the producer/consumer architecture to stream from hard drive to USRP. Surprisingly, the while-Loops do not to work parallely. Astoundingly, when both loop are running, just 3% of processor power is used. then, I turn the producer down and the consumer uses 25% of processor power; hence works properly.

How can I assign each loop to a processor?

Is it possible in labVIEW without the help of timed while loop? since even using timed while-loop do not solve the problem.

I am working on intel core i5-2500 @ 3,3GHz processor and LabVIEW 2013 SP1 is installed.

A similar issue was reported on the thread here. just that in my case LabVIEW doesn't crashes. Only the performance of individual loops drops.

You find my VI attached to this Post!

Thanks for your help

Bolivar