Dual Core Dragging

[Anonymous]

I have noticed that my newer dual core machine is slower than my older single core machine. It has been bugging me since I switched to AC10 from AC9. I think I may have finally found the source of the problem. When one open instance of archicad is allowed to access both cpu's the cpu usage goed to over 50% even at rest. When I set archicad to use one of the cpu's the cpu usage goes to 0% at rest as it should.

On my single processor machine the cpu runs as it should.
The dual core unti had been running at 50%+ usage all the time on both cpu's causing serious lag. I am wondering if anyone else sees this sort of effect on their dual cores? Maybe it is specific to my smithfield chips.

[TomWaltz]

Are you using the PPC or the Intel version of Archicad 10?

[Anonymous]

Oh, I am using a pc-dell. Core duo. 3.0GHz.

[Anonymous]

I agree. It seems a duo will top out at 50% of your CPU usage.

[Karl Ottenstein]

Everything is working exactly as it should. See:
http://www.archicadwiki.com/Multiprocessing
where this exact question is asked. (Comes up on this forum every week, as well...)

Karl

[Anonymous]

My situation isn't right. My processors run at over 50%-100% (closer to 100%) when archicad is the only software open, causing serious bottleneck, even at rest. I have recently found that if I open photoshop first and then Archicad, the processors run normally. When I shut photoshop down the processors run up and over 50% and slow down archicad.

I think it may be my pentium D dual core cpu. I have been hearing that there were some issues with the d-series as far as bottlenecking... Or maybe photoshop is forcing Archicad to use the Video Card and lightening the load on the cpus. I am not sure what is happening exactly.

For now I am keeping a photoshop file open and then archicad runs swiftly.