PCTuning fórum

Youki píše:Uz davno by som mal v compe HD 5970 a na Physx GTX285.

no-X píše:Tady nejde o další optimalizace, ale o odstranění i těch, které už byly realizované.

Richard Huddy píše:The other thing is that all these CPU cores we have are underutilised and I'm going to take another pop at Nvidia here. When they bought Ageia, they had a fairly respectable multicore implementation of PhysX. If you look at it now it basically runs predominantly on one, or at most, two cores. That's pretty shabby! I wonder why Nvidia has done that? I wonder why Nvidia has failed to do all their QA on stuff they don't care about - making it run efficiently on CPU cores - because the company doesn't care about the consumer experience it just cares about selling you more graphics cards by coding it so the GPU appears faster than the CPU.

It's the same thing as Intel's old compiler tricks that it used to do; Nvidia simply takes out all the multicore optimisations in PhysX. In fact, if coded well, the CPU can tackle most of the physics situations presented to it. The emphasis we're seeing on GPU physics is an over-emphasis that comes from one company having GPU physics... promoting PhysX as if it's Gods answer to all physics problems, when actually it's more a solution in search of problems.

crashPC píše:..darovat.. peníze za PhysX nVidia nebude...

obcanskej píše:Oni to zaplatili, oni mají plné právo si s tím dělat co chtějí.

Shit píše:

obcanskej píše:Oni to zaplatili, oni mají plné právo si s tím dělat co chtějí.

To je pravda, ale nerad bych se dožil situace, že grafika nVidia maká pouze na plný výkon na sestavě vybavené chipsetem nV, zvukovkou nV, disketovkou nV, procesorem nV... a jedině kabel k FDD nemusí být od nVidie za předpokladu, že je zelený. Součástí ovladačů bude i interní kamera, která bude zelenost FDD kabelu kontrolovat při spuštění PC.

Physics System
Powered by nVidia PhysX technology, can utilise multiple CPU cores, AGEIA PhysX hardware, or nVidia GPU hardware.

Nvidia Corp. said that it could eventually port computing of physics effects created using PhysX middleware to OpenCL application programming interface (API) and capable hardware. This may actually enable acceleration of physics effects processing on graphics chips to work on ATI Radeon hardware...

...“In the future it is a possibility that we could use OpenCL, but at the moment CUDA works great. [Our GPU] architecture allows for acceleration by other things like OpenCL. Nvidia works very closely with The Khronos Group, actually Neil Trevett is president of the group and he’s part of Nvidia, so we’ve been driving that standard also, and it’s an excellent standard,” said Nadeem Mohammad, a director of PhysX product management at Nvidia, in an interview with Bit-tech web-site.

Porting PhysX to OpenCL is a natural thing to do since the standard is supported both by central processing units (CPUs) and GPUs, hence, this would make PhysX middle-ware much more universal, something, which is important to compete against providers of competing engines, such as Havok, a division of Intel Corp.

NVIDIA Customer Care píše:"The current PhysX driver unfortunately does not support Aegia PPU hardware which you're already aware. Support for Aegia PPU ended after the 8.xx.xx driver but like you we've receive other users asking to include support in current PhysX releases. There are discussions to release a stand-along PhysX driver that will support Aegia PPU but that is still in discussion and I'm unable to get any confirmation or schedule. I can certainly update you if this changes or you can check back with us in a couple of months. Unfortunately we don't know anymore at this point."