If a program is multi-threaded, dual processors will be used automatically
with no effort on the part of the program. Who knows how Photoshop is
written? If you're running multiple programs simultaneously, as I am when
I'm scanning and doing Photoshop things at the same time, dual processing
will also come into play automatically. So even if Photoshop doesn't split
up a rendering task into multiple threads (which it probably doesn't, since
that would add overhead to single-processor systems), multiple processors
will still speed things up in the case of running two processor-intensive
applications at the same time.
Frank Paris
marshalt@spiritone.com
> -----Original Message-----
> From: owner-filmscanners@halftone.co.uk
> [mailto:owner-filmscanners@halftone.co.uk]On Behalf Of Lynn Allen
> Sent: Friday, March 09, 2001 9:05 AM
> To: filmscanners@halftone.co.uk
> Subject: Re: filmscanners: PS with dual CPUs, WAS: Re: Need feedback on
> VueScan
>
>
> >A particular operation like rendering will only go faster if the
> application has been specifically coded to chop the process into a number
> of lumps that can be calculated independently. Then you can start all
> those lumps off at the same time in separate threads and NT or W2K will
> handle the way those threads use multiple processors.
>
> Derek, does this mean that a program that isn't specifically written for
> dual processors won't *use* dual processors? That would mean that older
> programs aren't going to be improved by the higher technology. How
> up-to-speed are current developers on that angle?
>
> Best regards--LRA
>
>
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