Hyperthreading and ArchiCad 8.1

[Wokka]

I recently upgraded to a P4 2.8 1Ghz (400 DDR RAM) and I'm having several hangs/crashes.
Memory and viruses have been checked but when I turn hyperthreading off it seems much more stable. Does anyone know of any issues relating to this technology? Everything I've read implies it's OK but most things I find relate to dual precessors.

Thanks in advance

[Karl Ottenstein]

I've been running with hyperthreading enabled for over a year with no problems... except for an issue with the demo version of Piranesi (the release version has no problem).

In some stopwatch tests (marginal accuracy), I saw a 10 to 15% improvement in rendering time in C4D which takes advantage of the virtual 'extra' processor.

Do you have the most up-to-date BIOS update and graphics card drivers?

Karl

[Wokka]

Thanks Karl,
C4D is where I'm getting trouble too(R7.3, are you running 8 or 8.5?)!
I'll have to double check those drivers (thanks). (Radeon 9200).

Cheers, wish me luck.

[Karl Ottenstein]

Wokka wrote:
C4D is where I'm getting trouble too(R7.3, are you running 8 or 8.5?)!

I have C4D XL 7.3

Let us know what resolves the problem! Besides my earlier suggestions ... I wonder if it is related to your being on XP Home and me being on XP Pro?

By the way, the "trick" that the Informatix (Piranesi) guys gave me to get their demo to run with hyperthreading was to set the processor affinity so that it would run on just one processor. Open Task Manager, right mouse the running process and assign it to a processor. Again for the public record - Piranesi itself runs fine with hyperthreading enabled.

Karl

[Djordje]

Wokka wrote:
Thanks Karl,
C4D is where I'm getting trouble too(R7.3, are you running 8 or 8.5?)!
I'll have to double check those drivers (thanks). (Radeon 9200).

Cheers, wish me luck.

Check the quality of the memory banks; I recently had a series of crashes which, as per GS Tech support, are directly related to the memory.

Setting a slower access to the memory or a different mode of access (depends on your motherboard/BIOS/memory type) might work. I also run HT all the time, no problems whatsoever.

Also, do update the ATI drivers; a new Radeon set was published just recently. I did have trouble with 9800, that stopped with the new drivers.

IMHE, whenever any CAD or rendering sotware was unstable, it was the fault of the memory chips. RAM or VRAM.