I have a Mac Pro with two dual-core Intel processors (Mac OS 10.4.7). How many tasks should I be able to simultaneously execute? I was under the impression that I would be able to execute 4 tasks simultaneously. However, it appears that I am able to execute only 2 tasks simultaneously. I am asking the question because with no other open applications and BOINC manager set to "Run Always", the Apple Activity Monitor utility indicates only 50% total CPU usage.

Note that my dual processor G5 box (Mac OS 10.4.7) can simultaneously execute 2 tasks and the Apple Activity Monitor utility indicates 100% total CPU usage.

Thanks for your advice!

Dave

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In General preferences, on your Account page, what value do you have set for: On multiprocessors, use at most?

In General preferences, on your Account page, what value do you have set for: On multiprocessors, use at most?

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Thanks for the help. I set the value to "4" and presto, my MacPro started crunching 4 tasks simultaneously.

In General preferences, on your Account page, what value do you have set for: On multiprocessors, use at most?

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