How to fully use all CPUs?

Hi Folks,
I'm a newbe to the new MacPro. I have a 12 core (24 thread) system but it is only using 4 cores. I receive the message "Waiting for shared memory" How do I employ all cores? I am trying to stress test the system with Seti.
Thanks,
SD

Are you really still using 10.5.6? if so, an Upgrade to 10.6 would improve task Utilization:
Grand Central Dispatch (GCD) is a technology developed by Apple Inc. to optimize application support for systems with multi-core processors and other symmetric multiprocessing systems.[2] It is an implementation of task parallelism based on the thread pool pattern. It was first released with Mac OS X 10.6, and is also available with iOS 4 and above.
--http://en.wikipedia.org/wiki/Grand_Central_Dispatch

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" Standby List
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Elton Ji
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How to fully use all CPUs?

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