Dual Processor

Dual Processor#38220

By Maxer - Thu Jun 23, 2005 8:53 pm

- Thu Jun 23, 2005 8:53 pm #38220

I've got a dual processor system and I'm running the Beta version of Maxwell. I thought I would take a look at the system performance while I was waiting and to my suprise Maxwell is only using 50% of my total processing power at sample level 9. When I got to sample level 11 it went up to 100%, this seems very strange to me shouldent it be using 100% all the time?

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#38226

By Kabe - Thu Jun 23, 2005 9:02 pm

- Thu Jun 23, 2005 9:02 pm #38226

On OS X it's a 100% all the time... at least if you select to use 2 threads.

Kabe

#38227

By Maxer - Thu Jun 23, 2005 9:03 pm

- Thu Jun 23, 2005 9:03 pm #38227

Ok for what ever reason it seems to use 100% of the processor through about 2/3 of a sample level and once it gets to that point it goes down to 50% until the next sample level starts. My Num of Threads is set to 2.

Official B-Team Member

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#38230

By Jeff Tamagini - Thu Jun 23, 2005 9:05 pm

- Thu Jun 23, 2005 9:05 pm #38230

its all about quality, the earlier samples do not need 100% power to calculate because they are intial lower quality stages, the further along in your samples the nice the image the more constant processing strain on your chips so they go full boar all the time. Hope this rambling mess makes any sense. 100% in the early samples is not really a benefit time wise.

Jeff Tamagini
cbt architects/Tamagini Design
My Flickr
http://www.tamaginidesign.com

PC Specs
Dual Xeon 3.0 w/HT
2gb RAM
nvidia quadro fx 1300

#38232

By Maxer - Thu Jun 23, 2005 9:10 pm

- Thu Jun 23, 2005 9:10 pm #38232

What do you consider early sampling because I'm at sample level 12 right now and it's still doing the same thing, and I don't think it's updating the render window for 10 minutes.

Official B-Team Member

http://devinjohnston.cgsociety.org/gallery/

#38238

By rivoli - Thu Jun 23, 2005 9:36 pm

- Thu Jun 23, 2005 9:36 pm #38238

on my dual xeon it goes 100% full time, it only slows down to 25%_50% for a minute when updating from a sample level to another. i always use as many threads as possible (at least 8 ).

#38245

By Maxer - Thu Jun 23, 2005 10:45 pm

- Thu Jun 23, 2005 10:45 pm #38245

Now that I've been watching it for a while I guess it's just slowing down to do the update, man that scared me for a second.

Official B-Team Member

http://devinjohnston.cgsociety.org/gallery/

#38260

By albertMaxwell - Thu Jun 23, 2005 11:21 pm

- Thu Jun 23, 2005 11:21 pm #38260

The patch 1.2.1 has been released.

It has optimized for Multithreading systems.
For performance, I recommend to use as threads as number of CPU's in your system. No more no less. It is detected by Maxwell using -th:0 or -threads:0 option in command line.

Albert

#38414

By Hervé - Fri Jun 24, 2005 8:47 am

- Fri Jun 24, 2005 8:47 am #38414

even in LW....?

sing with me.... la la la... la la la

#38416

By Kabe - Fri Jun 24, 2005 8:55 am

- Fri Jun 24, 2005 8:55 am #38416

Jeff Tamagini wrote:its all about quality, the earlier samples do not need 100% power to calculate because they are intial lower quality stages, the further along in your samples the nice the image the more constant processing strain on your chips so they go full boar all the time. Hope this rambling mess makes any sense. 100% in the early samples is not really a benefit time wise.