@delta3074 said:
Hardware Physx is only supported on Nvidia GPU's dude, it says so on NVIDIA own site
http://www.geforce.co.uk/hardware/technology/physx/supported-gpus
You can only get Hardware physx on Nvidia GPU's, it's software on everything else which to my Knowledge, which isn't much, that requires more resources
You don't get it you don't need PhysX to run physics on the GPU on PS4,PhysX is just a library of physics than run on Nvidia hardware,and now with Nvidia using directcompute instead of cuda it can even run on AMD GPU all it would take is a simple port.
But again to run physics on the GPU you don't need PhysX and the argument about PhyX is a stupid one,because regardless of not running on AMD GPU the test i posted is of PhysX CPU vs GPU running on a 660ti which is Nvidia hardware the point was to illustrate how Physics on GPU would run faster than on CPU up to 6 times faster from the test i posted i advice you to read the complete argument instead of one post in which you think you are proving me wrong.
@commander said:
1. Yes the video is true, but you're making the wrong assumptions. The 'physX' you see there is particulary made for nvidia gpu's with cuda cores on the pc. If you disable it it's not like the game hasn't got any physics at all anymore, it's just the extra stuff you getting with nvidia physX for the pc like extra particles, etra physics on clothing, glass that breaks etc..
That software isn't written particulary for the cpu either. I'm not saying the cpu wouldn't do it slower but not as much slower as in that video. The cpu is emulating the code, that's not the same as something that's deliberately written for the cpu. Besides even with hardware accelerated nvidia physX on the pc, the gpu and cpu are still working together to make it happen. Not everything is calculated by the gpu only. It's actually like that for all hardware accerated physics, because gpu's have too much latency to do everything alone.
2. The physics you see in the last video you posted are not the same as nvidia physX on the pc, this one is made with the havok engine. I never said that the gpu wasn't faster at certain calculations but the cpu does still work as well.
3. PhysX may be a name for the physics sdk of nvidia, which consists out of several physics engines, the video you posted before is about nvidia physX on the pc, that's just one engine and certainly doesn't span over all computer physics in general.
4. See 3
5. Physics will never run of the gpu only, it has too much latency.
6. The 7 th core is 80 percent usable when voice commands are disabled, 50 percent when not, that can even be done on the fly, making up for a 5 percent fps drop when you do a voice command or they can just disable voice commands for that game. That core is overclocked as well. making up for 88 percent of cpu performance when you compare with 1 core of the ps4. With that 7th core enabled and the base overclock on all cores, the x1 has a total of 25 percent more cpu power available .
7. Nvidia physX on the pc runs only on nvidia cards, end of story
1-No i am not independent of been Nvidia or AMD the end results it what matter since the point was Physics run faster on GPU which they are,you like a blind fool think that because it was physX and sony hardware is AMD that doesn't apply which is not true.
That R265 like GPU inside the PS4 will destroy that Jaguar running physics after all the test Nvidia did wasn't vs a 1.6 Jaguar dude.
That is where you are wrong,because you totally lack the skill to argue this,PhysX ran on Cell and xenon before it even ran on Cuda,PhysX was a separate card to accelerate physics it wasn't a GPU,and Cell was basically like the Ageia chip and was a CPU optimize library.
MOUNTAIN VIEW, Calif. March 21, 2006 – AGEIA Technologies, Inc., the pioneer in hardware-accelerated physics for games, today announced that the latest version of AGEIA PhysX SDK version 2.4 will become available to registered PLAYSTATION 3 game content developers on March 31, 2006.
The AGEIA PhysX SDK is highly recognized for its extensive physics functionality and multithreading capabilities, which are uniquely suited for the multicore architecture of the Cell processor adopted on PLAYSTATION 3. The latest AGEIA PhysX SDK version 2.4 is optimized for the Cell processor, adding mind-blowing physics action to the high-definition graphics of PLAYSTATION 3 titles.
In the 2.4 release, several components of the AGEIA PhysX pipeline have been offloaded from the PPU of the PLAYSTATION 3 to the SPUs; developers can fully control the component deployment. This has resulted in a 50% reduction in maximum PPU load, leaving more room for game code and smooth frame rates.
You are like 10 years late before PhysX ran on Cuda it was already running on CPU it was even customize to run on Cell SPE,so you can see how customize it can be.
2-Physics are Physic and you should know that,you don't need PhysX period to run physics on the GPU.
3-The video i posted of Nvidia show PhysX running on CPU vs GPU and the GPU spank it,oh and that wasn't a crappy Jaguar.
4-See 3.
5-Latency mean shit,and is not GPU that have latency idiot is memory which has latency,and we already establish that latency in GDDR5 isn't particularly higher than DDR3,Physics will run fine on the GPU and the video i posted owned your ass over...
6-Is not 80% usable because system calls will eat 50% on the spot,which mean if you use 80% of the CPU and you make a system call the performance of what your are running will drop or even freeze.
You don't get it you can give up system call IN GAME that mean voice command for game specific things,the system call are not given and still will consume 50%,oh and there is no way to know how much is free.
Oh and god forbid if sony does the same,since sony has a 2 core reservation but they have no snap or Kinect so if they want to get a core from the OS it will be a complete one,just like they did ram on PS3 when they lower the usage from 125mb to about 40mb.
7-No Nvidia PhysX on PC runs on CPU as well moron,in fact how the fu** you think they did a comparison CPU vs GPU.?
You know shit about this..
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