Re: [APML] Multiprocessors and Image Processing

[Roland Roberts <roland@astrofoto.org>]

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>>>>> "rich" == Richard Klappal <klappal@xnet.com> writes:

    rich> I'd recommend more memory, and forget the second processor.
    rich> My current machine is approaching 1-1/2 years old, has a
    rich> 1.8GHz P-IV, and 1 Gig of memory.  Processing a 150MB 48-bit
    rich> scan of a 6x6 cm image in PW is good.  In PS, its slower,
    rich> but still tolerable.

You do pay a premium for the extra processor, but I have never
considered anything else.  My first PC 8 years ago was dual processor
(133 MHz Pentiums!), and the one I'm building now is dual 2.4 GHz
Xeons.

One of the things I like about the dual processors is that the system
response is almost always good even when you have something CPU-heavy
happening.  Some of this is because, with the exception of code like
PS which is SMP-aware, only one CPU will be busy and the other is free
to talk to you.

Of course, when doing some tasks, like ripping MP3s, I keep both CPUs
pretty busy by running parallel jobs....

If you are looking to economize and still get good performance, I
would probably add more memory before jumping to dual CPU.

roland
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		       PGP Key ID: 66 BC 3B CD
Roland B. Roberts, PhD                             RL Enterprises
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roland@astrofoto.org                           Brooklyn, NY 11220

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