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Running on my core 2 laptop, running two copies of AB, doing
optimizatios will slow down both, but not by half. So, running on 1
core, might take 1 minute per pass, two cores can run 2 passes in 1.5
minutes.
But... The two passes are independent and dont know about each other
and are not part of the same optimization run.
Also... The dual cores can be had at 3GHz, the quad cores at less.
So, it is hard to keep 4 cores busy and the contention will be worse.
I just ordered a new optimization system myself. I went with the 3Ghz
Core 2 dual, with 4GB of DDR2(800) ram. There is faster ram available,
but at a much higher cost and benchmarks dont show much benifit.
--- In amibroker@xxxxxxxxxxxxxxx, "Steve Dugas" <sjdugas@xxx> wrote:
>
> Hi - OK, I decided to get a new computer for optimizations. I can get
either a dual-core or a quad-core. I know TJ has run tests and decided
not to rewrite AB's optimizer for multi-core, but I think I remember
someone saying that they were getting a speed boost by running 2
instances of AB on a dual-core machine? So, if I got a quad-core and
ran 4 instances, would they each use a different core and give me a 4X
speed increase? If not, could it possibly be *slower* to get a quad-
core if all instances of AB are trying to use only one core ( 1/4 of
computer's power, vs 1/2 for a dual-core )? Sorry for the stupid
questions, I hope someone knows more about it than me. 8 - )
> Thanks!
>
> Steve
>
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