FYI - Batman demo to download with PhysX...

[Eastcoasthandle]

the cpu is broken in it IMO, with physX it uses 2 threads without its on 1 so the total physX package should work on 4 threads

Then it is indeed broken. Why would anyone need to show GPU/CPU results when cpu physx only uses one thread
Had the engine itself properly utilized physics on the CPU w/o the need of physx we would be able to choose how we want to use in game physx IMO.

[Talonman]

System:
Q6600@ 3.81GHz Driver 190.38
(1) 295 processing Graphics set to 621/1458/1188
(1) 280 operating in dedicated PhysX mode set to 756/1512/1269
Ambient Occlusion was set to on in the Nvidia Control Panel.

Game settings:

I would like to see an ATI member run at these settings, to see if the CPU can indeed give the same performance as the GPU in this game...

Post some screen shots with fraps, take V-Sync off, and I will do the same tonight after work.

I still am of the mindset that while some level PhysX may be able to process on a CPU, we should be careful not to imply that it can match it's performance when running on a GPU. If you run with PhysX on High, and 4X AA, at 1920x1200, I still believe the CPU will lose real bad. If we are willing to throw performance out the window, yes a CPU can run PhysX too, but this is XtremesyStems right? We never throw raw performance out the window do we?

It's OK if you have more CPU than me... I won't hold it against you.

[trinibwoy]

i was chilling at 80fps normal and 25-30 with physX, but i couldent change it untill i edited the ini

How did you get it up to 80fps? I can't get it past 60fps no matter what, looks like it's the same thing for Talonman based on those numbers he posted. V-sync's off so it seems like the engine itself is locked to 60fps.

[zanzabar]

How did you get it up to 80fps? I can't get it past 60fps no matter what, looks like it's the same thing for Talonman based on those numbers he posted. V-sync's off so it seems like the engine itself is locked to 60fps.

100 hrz monitor

[trinibwoy]

Monitor refresh has nothing to do with fps unless vsync is enabled. And it isn't. Is anybody else seeing > 60fps in this game? I tried overclocking the CPU too and lowering the resolution but still nothing. Very curious, wonder if I'm memory bandwidth limited.

[Talonman]

Monitor refresh has nothing to do with fps unless vsync is enabled. And it isn't. Is anybody else seeing > 60fps in this game? I tried overclocking the CPU too and lowering the resolution but still nothing. Very curious, wonder if I'm memory bandwidth limited.

Man-O...

I wanted to see how much faster I would run with V-Sync off.

I have a 60hz display too, but that never stopped me before from getting more than 60FPS. (With V-Sync off)

[zanzabar]

Monitor refresh has nothing to do with fps unless vsync is enabled. And it isn't. Is anybody else seeing > 60fps in this game? I tried overclocking the CPU too and lowering the resolution but still nothing. Very curious, wonder if I'm memory bandwidth limited.

with UT3 max refresh is typically the cap on max fps even without vsink

[Talonman]

I just found this...

http://forums.tweakguides.com/showth...?t=5700&page=6

"In terms of tweaking, the UT3 structure has changed slightly but all the relevant .ini files are found under \Documents and Settings\User\My Documents\My Games\Unreal Tournament 3 Demo\UTGame\Config. The main config files are UTEngine.ini for general engine graphics/audio variables, UTGame.ini for player-based variables, and UTInput.ini for bindings.

The -nointro switch doesn't seem to work, so skipping the intro movies involves (as Jonas has pointed out) going to \Program Files\Unreal Tournament 3 Demo\UTGame\Movies and renaming the following files: Copyright_PC.bik, EpicLogo.bik, Intel_Duo_logo.bik, MidwayLogo.bik, Nvidia_PC.bik, UE3_logo.bik.

Apparently people have uncapped the 60FPS limit by changing the bSmoothFrameRate to =false in the UTEngine.ini.

You can access the console with ~ key, and the console commands are similar to UT2004. STAT FPS for example shows your framerate - try the other commands on page 12 of the UT2004 Guide.

I'll obviously look into this in much greater detail once I start the UT3 guide in the next day or so. There's a lot of tweaking potential in the game, and I have a feeling it will be quite popular among the UT crowd."

Or the next post..

Actually the FPS cap is at 62 FPS at default:

[Engine.GameEngine]
bSmoothFrameRate=TRUE
MinSmoothedFrameRate=22
MaxSmoothedFrameRate=62
bClearAnimSetLinkupCachesOnLoadMap=TRUE

[trinibwoy]

with UT3 max refresh is typically the cap on max fps even without vsink

Ah, thanks you're right. Just tried UT3 and Mass Effect and same thing there too

[Final8ty]

Wow, simple enough
It makes absolutely no sense why CPU physics wasn't optimized with this game so that all you have to do is select how you want physics done from within the game. This is a nice find no doubt but I have to question what would have been if they properly coded this game were we don't have to tweak a .ini file via physx instead of the engine itself.

NV can fool some of the people but not all of the people.


Any chance of looking into some other UT3 engine PhysX... games to see if the same can be done.

[Eastcoasthandle]

NV can fool some of the people but not all of the people.


Any chance of looking into some other UT3 engine PhysX... games to see if the same can be done.

If it can be done in this game one should be able to do it in other unreal 3 based games. However, this is the only game that I know of right now.

[Wookie Man]

Once again I don't think PhysX is all that great.

[Talonman]

Found it!!



Going to try changing my numbers...

[Talonman]

The only thing I changed was MaxSmoothedFrameRate=100.000000, and set V-Sync to OFF.

[Engine.GameEngine]
bSmoothFrameRate=TRUE
MinSmoothedFrameRate=24.000000
MaxSmoothedFrameRate=100.000000

Works like a charm!


72 FPS


79 FPS


79 FPS


85 FPS


75 FPS


99FPS


99FPS

[trinibwoy]

Sweet. No help for me though. 2560*1600 + PhysX is taxing my card pretty good as it is. It's too bad Nvidia has no incentive to optimize PhysX on the CPU. Havok isn't helping either, they need to provide more competition.

[Talonman]

True that!!

I am hitting 100 FPS in spots, so i'm sure I could get more if need be.

So far 100 FPS is fine for me, especially with a 60Hz display.

[Final8ty]

go to "Documents\Eidos\Batman Arkham Asylum Demo\BmGame\Config"

then open UserEngine.ini

next change "PhysXLevel=0" to "PhysXLevel=1", u can also set it to 2 but it just seams to add alot of paper and that makes it lagg a little while adding nothing to the game

Some other people have been trying out PhysX on the CPU through the in-game menu & are getting as low as 12 fps.

Are you sure your fps did not dip into the 12's ?

[zanzabar]

Some other people have been trying out PhysX on the CPU through the in-game menu & are getting as low as 12 fps.

Are you sure your fps did not dip into the 12's ?

yes it dropped to 22 minimum with frps i had the fraps fps going for lvl1, lvl2 was low i didnt bother with fraps since it lagged

XS users are not the same as other forums and i do have the fastest single gpu card and a good oc on the cpu

[Final8ty]

Thanks.

[Talonman]

In the 12's.... Gasp!

The CPU can fool some of the people but not all of the people.

What CPU at what speed do you run Zanzabar?

Nice sig too... "physX and securom (dieing) need to die just say no"

I am a YES man to GPU PhysX.

[Clairvoyant129]

I agree with you Zanzabar, just say no to "PhysX"

[Talonman]

Too bad more aren't into raw performance, with max eye candy.

Now I know why we didn't see any CPU PhysX screen shots, with Fraps active.

I still am of the mindset that while some level PhysX may be able to process on a CPU, we should be careful not to imply that it can match it's performance when running on a GPU. If you run with PhysX on High, and 4X AA, at 1920x1200, I still believe the CPU will lose real bad. If we are willing to throw performance out the window, yes a CPU can run PhysX too, but this is XtremesyStems right? We never throw raw performance out the window do we?

It's OK if you have more CPU than me... I won't hold it against you.

With the tech we have available to us today, this is still a truth in the universe.

[Clairvoyant129]

Too bad more aren't into raw performance, with max eye candy.

Now I know why we didn't see any CPU PhysX screen shots, with Fraps active.



With the tech we have available to us today, this is still a truth in the universe.

And why are you quoting yourself?

[Talonman]

Due to on the page where I originally typed it, we were still saying things like:

Wow, simple enough
It makes absolutely no sense why CPU physics wasn't optimized with this game so that all you have to do is select how you want physics done from within the game. This is a nice find no doubt but I have to question what would have been if they properly coded this game were we don't have to tweak a .ini file via physx instead of the engine itself.

and

NV can fool some of the people but not all of the people.

I believe at that time, we were proceeding on lack of info, and my statement didn't seem to hold much weight with the boys.

Now in light of some actual CPU PhysX FPS numbers surfacing, it's looking to be more correct.

With the apparent huge performance difference we are seeing, I am now thinking it is more than just an CPU optimization issue. I think it's more of a hardware limitation issue.

GPU's are just way better at PhysX. (Sorry if the 3 lines in my quote took up too much screen space.)
I will try not to let it happin again.

[Final8ty]

In the 12's.... Gasp!

The CPU can fool some of the people but not all of the people.

What CPU at what speed do you run Zanzabar?

Nice sig too... "physX and securom (dieing) need to die just say no"

I am a YES man to GPU PhysX.

Maybe its because zanzabar is using older physX drivers that don't lag on the CPU & the other users are using the latest physX drivers are not.

You did not stop to think why zanzabar's minimum FPS are twice as high as others.

You will never be a good problem solver on the PC without talking a methodical approach with choosing to not take both results into account.

This does not prove that the Physics in that game could not de done on CPU, but the Physics in that game using the very unoptimised physX CPU path is crap.
It would not surprise me that NV is slowing down the already rubbish physX CPU path as time goes on to widen the gap.