is faster hyperthreading?

[alex3d]

i have 2 dual xeon workstations, when i'm doing renders in final render is beatiful to see 8 procesors rendering a single frame but, is faster use hyperthreading? i can go to the bios and disconect hyperthreading to compare but i dont like hardware experiments with expencive technology. lol

[Tiny Piney]

Good Question. I would like to know as well. I far as I understand hyperthread use the unuse processing power that most programs leave behind. But does happen with a huge number crunching program like rendering?

[Tim Nelson]

There's been a lot of discussion on this at the Vray forums. Its been generally noted that enabline HT will give you a significant performance boost. You should give it a try! I honestly am pretty confident that you won't break anything by turning it off & on.

 

So in general, I think all bucket renderers really take advantage of HT, but not sure about other types of programs.

[rivoli]

as timmatron pointed out HT should give you a more or less significant increase in rendering performance.

anyway, i'd suggest you to test a scene with and without HT enabled to draw your own conclusions. don't worry about turning it on and off, it's not a big deal and it won't cause any trouble to your system.

you may also want to check this link to get a better insight into what HT actually is:

 

http://www.2cpu.com/articles/42_1.html

 

hope it helps.

[STRAT]

HT boosts rendering speeds by up to an extra 25% in cinema4d

[Hazdaz]

I believed that HT would speed up rendering too...

 

BUT then someone pointed out that HT gives you a speed boost by using unused cycles of the chip... BUT what you guys are forgetting that when rendering, the chip is usually at 100% usage already, so there really aren't any EXTRA cycles to use. Becuase of that I have read that when rendering its not much of a speed boost. One of these days I will actually TRY it, and while it is fun to see 4 buckets flying around (I have a dual XEON), I have my doubts that its really that much faster.