Sorry your browser is not supported!

You are using an outdated browser that does not support modern web technologies, in order to use this site please update to a new browser.

Browsers supported include Chrome, FireFox, Safari, Opera, Internet Explorer 10+ or Microsoft Edge.

Dark Physics & Dark A.I. & Dark Dynamix / Multi-core processing

Author
Message
Kenjar
18
Years of Service
User Offline
Joined: 17th Jun 2005
Location: TGC
Posted: 24th Aug 2006 01:32
Link
Just an idea for DarkPHYSICS. While PhysX isn't massively wide spread right now, duel core processors are becoming more standard as they drop in price, and start to replace the older unicore processors. It is my understanding the DarkBASIC does not make use of multi-core technology. Would it not be a good idea to allow DarkPHYSICS to use what is effectively an entirely unused processor core for dedicated Physics Processing functions? That way the processing power would be put to greater efficiancy rather than having the CPU have to manage and direct normal processing thus generating larger overheads.

I lay upon my bed one bright clear night, and gazed upon the distant stars far above, then I thought... where the hell is my roof?
Back to top
Profile PM Email Website
Mike Johnson
TGC Developer
21
Years of Service
User Offline
Joined: 13th Sep 2002
Location: United Kingdom
Posted: 24th Aug 2006 10:18
Link
Dark Physics will take advantage of dual core processors; the physics simulation calculations run in their own thread, separate from the application thread.
Back to top
Profile PM Email Website
Kenjar
18
Years of Service
User Offline
Joined: 17th Jun 2005
Location: TGC
Posted: 25th Aug 2006 02:38
Link
Umm... DP is definately sounding more promising.

I lay upon my bed one bright clear night, and gazed upon the distant stars far above, then I thought... where the hell is my roof?
Back to top
Profile PM Email Website
Redmotion
21
Years of Service
User Offline
Joined: 16th Jan 2003
Location: Mmm mmm.. Marmite
Posted: 2nd Sep 2006 23:02
Link
Quote: "Dark Physics will take advantage of dual core processors; the physics simulation calculations run in their own thread, separate from the application thread."


Sorry Mike, but i can't see any evidence of this! (See screen capture of task manager while DBPro program using Dark Physics was running - attached.)
If ageia physics was using another processor it should have said something like:

JW physics test 01.exe CPU=48
Ageia.exe (or whatever it should be) CPU=49 (for example)

or
JW physics test 01.exe CPU=96

eg: DBPro running on one thread and the Ageia driver running on another (DBPro using both)- but this doesn't appear to happen.

BLACKMESA:SOURCE - mod for HL2 - Texture Artist
BIRTHSTAR:FRONTLINE - Texture & Environment Artist

Attachments

Login to view attachments
Back to top
Profile PM
Mike Johnson
TGC Developer
21
Years of Service
User Offline
Joined: 13th Sep 2002
Location: United Kingdom
Posted: 2nd Sep 2006 23:32
Link
I don't have a dual core cpu so I'm unable to see this in action. However, there are a few people who have confirmed DP utilising dual core very well.

By default you wont see any benefit unless you move away from the standard one call to phy update each frame. Check out the Information\Advanced\Asynchronous Timing section of the documentation for information on how to use multi threading. You may also like to try the Asynchronous demo program included.
Back to top
Profile PM Email Website
Redmotion
21
Years of Service
User Offline
Joined: 16th Jan 2003
Location: Mmm mmm.. Marmite
Posted: 3rd Sep 2006 00:41
Link
Ok - I'll have a look at that.

Cheers Mike.

BLACKMESA:SOURCE - mod for HL2 - Texture Artist
BIRTHSTAR:FRONTLINE - Texture & Environment Artist
Back to top
Profile PM
bosskeith
18
Years of Service
User Offline
Joined: 5th Dec 2005
Location:
Posted: 3rd Sep 2006 11:20
Link
I think lee mentioned something about this in the newsletter this month with "phy update 0" and "phy update 1"
[i][/i]

Ink all over the screen...and dang it! Signature still does not show.
Back to top
Profile PM Email Website
Redmotion
21
Years of Service
User Offline
Joined: 16th Jan 2003
Location: Mmm mmm.. Marmite
Posted: 3rd Sep 2006 11:28
Link
This works great now - if you have sync rate at 0 - it runs almost too fast!



BLACKMESA:SOURCE - mod for HL2 - Texture Artist
BIRTHSTAR:FRONTLINE - Texture & Environment Artist
Back to top
Profile PM
Back to top

Login to post a reply

Server time is: 2024-04-25 22:11:06
Your offset time is: 2024-04-25 22:11:06