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single core to dual core = require reformat?

Fullmetal Chocobo

Fullmetal Chocobo

Moderator<br>Distributed Computing
Moderator
My wife is putting in a dual-core XPA to replace her Opty 148. She has Windows XP Professional SP2 on there now, but I can't remember if it had to be installed on a dual-core to enable the SMP functions. I'll keep googling to see if I can find something to answer as well.
 
Shouldn't need to, as long as your copy of XP is using ACPI to enumerate the CPUs it should just see the extra core and start using it.
 
Originally posted by: Rockhound1
You might want to review this page (Link). There is a driver and an optimizer that you might be interested in.
Click to expand...

There is no need for that. Just set an affinity if you have an application that has an issue.
 
Or just realize that Windows is smart enough to balance tasks on your CPUs for you and don't f' with the affinity either.
 
Originally posted by: Nothinman
Or just realize that Windows is smart enough to balance tasks on your CPUs for you and don't f' with the affinity either.
Click to expand...

Except that it isn't. It ping-pongs tasks between the CPUs for no good reason at all, wasting L2 cache bandwidth.

Supposedly the MS multicore patch for XP fixes this behavior.

 
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