If the OS is smart enough, its better to let it make the decision.
I.e. it will decide when to assign time slots to free cpus when a
process is ready to run.  If you force a process to only run on one
cpu, then one of two things might happen: a) if the OS schedules
another process to run on that cpu when photoshop is idle, then it
might not have a slot to use when it becomes active again.  b) If the
OS dedicates the cpu to photoshop and nothing else, the other cpu(s)
might be overloaded, even though the photoshop cpu might have free
time to execute.

Gonz


On 2/13/08, William Robb <[EMAIL PROTECTED]> wrote:
> Ok, I have my new machine running swimmingly, but I have a couple of
> applicatioions that don't like running on multiple core processors. I can
> set the affinity during launch and the program runs perfectly, but this is
> something that I have to do every time.
> I checked the Microsoft knowledge base, and came away somewhat confused, as
> it appears to be written for people who know far more than I do.
>
> What I am looking for is a way to tell the OS that particular programs will
> only have an affinity for either CPU 1 or CPU 2. Is there an easy way to do
> this, or at least one that a simple dork like me can understand?
>
> Thinking out loud time, would there be an advantage to having, for example,
> all the background services running on one CPU, and then having big
> applications like Photoshop running on the other one?
>
> Thanks
>
> William Robb
>
>
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