hyperthreading followup

[DP]

our system that caused problems

Dell Precision 450, dual 2.8 ghz 512k cache, 1 ghz ram, win xp (not service pack 1) rendering under backburner from max 5.1

[DanielBrew]

You've got me worried, I've just bought a new dell dual xeon (Precision 470) with HT enabled. I've not had any hangs rendering stills and I'm yet to try rendering an animation, maybe I'll set one going over the weekend. If I do I'll report back any problems.

A quick search on google showed that VRay is not the only program experiencing problems with HT, it's not even restricted to Windows as Linux users are also having similar issues.

Example:

http://softwareforums.intel.com/ids/...message.id=476

Microsoft and Intel have admitted that there is a bug in Windows inplementation of HT but it appears to affect performance rather than cause software freezes. This has been fixed in XP SP2, apparently.

http://notebookforums.com/archive/index.php/t-4159.html
http://www.xbitlabs.com/news/cpu/dis...616011726.html

Dan

[askhamdesign]

HT Prob On 5 all 5 of my machines

I have x5 PC-DL Asus dual 3.06 and have to turn HT off for complex vray gi scenes, all is fine if you dont use GI. Its def a Vray prob not a hardware prob.

[RErender]

16 Dual 2.8's w/HT enabled here, few problems (well no more than with Max scanline) with heavy animation rendering with GI and V-Ray. Most problems can be traced to network traffic issues not HT.

Generic systems based on SuperMicro x5dal-g