wtf! render using 50% of p4HT CPU?

[GregHess]

Sometimes just because the task manager isn't all spiked out at 100% (both cpu's) doesn't mean the system isn't working to its full potential.

Is there some sort of mulithreaded on/off switch in maya?

You could always try rendering with HT off, and then with HT on to see which is faster.

Just a restart and a bios change away.

[imashination]

Greg, you should know better!

Groff: what task were you doing when it showed 50% cpu usage? A HT system splits the cpu into 2 virtual cpus, this means if you are using a single threaded program or feature then the most your little task manager graph will show is 50%. This is 100% of cpu1 and 0% of cpu2.

This does NOT mean your system is only using half of its power, it means it is using 100% of its processing power, but you are not getting any benefit from the HT feature. You usually get this when you render with a crap renderer or when you use a feature which cannot be split up, such as the editor 3D view, radiosity rendering etc.

To test, go to www.cinebench.com and run all the tests. The realtime views should cap out at 50%, the first rendering should also be limited to 50%. The final test uses multiple cpus/HT and should show a cpu usage of 100%.

The bottom line is dont worry about it, you cpu uage is not 50% (even though it says so) But as Gregs says, check if there are any thread/cpu options in your app.

[Maximus Groff]

holy freaking hell...

thanks for te info dudes, i was beginning to kick the vendor
in the ... well.... silly me, should read about HT...

Maya has the "Use all processors" checkbox, wich i im turning
on right now....

heheh.... im such a newb... :blush:

[GregHess]

Greg, you should know better!

Know better what? Whosit?

I'm on vacation! And there WAS a multiprocessor checkbox too! See I knew it!

Eat that crumbcake, Sockpuppet man! :)

:beer:

I'd show you a graph explaining the "full potential" goodness...but I can't seem to find the image.

All I can seem to find is this.

http://user.chollian.net/~movieland/data/halle003.jpg

And then I forget what I'm doing.

What forum is this again?

:surprised

[Sieb]

*gasp* theres a hotchick in the tech forum!:eek:

[3Dfx_Sage]

hey, I think I've d.... err.... MET her before, or at least some hot model who looked like her ;)

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