Forum > GPU crunching
GTX 460 superclocked
Jason G:
--- Quote from: TouchuvGrey on 19 Aug 2010, 08:58:08 pm ---Any thoughts or suggestions will be greatly appreciated.
--- End quote ---
Hi,
Still no Cuda documentation detailing these directly from nVidia in the last SDK. You would have to ask the makers of GPU-Z what interface they use to query the device and drivers. My guess is nVidia's driver API. Since there's only one driver listed on nVidia's site for that card, it's doubtful IMO that it's mature and completely bug free for them.
On the GTX 460 in general: Some technical questions I had over these cards have slowly had some answers clarified from articles here and there. These namely involve the changed Cuda core geometry in GF104 over GF100. Thankfully the extra cores, 48 instead of 32 per multiprocessor, which would have been difficult to program for requiring extensive code modification, are a hardware optimisation for superscalar execution (instruction level parallelism), so will run Fermi optimised kernels without needing special ones as I feared when I first heard those numbers. Looks good, for programming purposes it seems to me these should probably be treated as 32 cores per multiprocessor, but theoretically up to 50% faster by superscalar execution. so the math works out the same if we just call it 48 :D . It's just a way of cramming in and using more cores effectively without having to get everyone to rebuild their Fermi software, or duplicate other components on die only to sit idle. It'll take a while yet before any of these cards,( GF100 & GF104) can be used to their full potential.
Jason
TouchuvGrey:
Given what we do know about the GTX 460, what application will
put it to use best ?
Jason G:
Cuda 3.0 build of x32f (seeing as you're a squire). Probably 2 instances per Fermi card at a time.
Ghost0210:
--- Quote from: TouchuvGrey on 19 Aug 2010, 08:58:08 pm ---GPU-Z 0.4.5 shows CUDA to not be available og my GTX-460, nor is
DirectCompute 4.0. It shows both ARE available on my GTS 250.
Any thoughts or suggestions will be greatly appreciated.
--- End quote ---
I get the same on the 465 with GPU-Z, no cuda, no DirectCompute 5.0 But do have OpenCL available
MarkJ:
--- Quote from: Ghost on 20 Aug 2010, 07:41:49 am ---I get the same on the 465 with GPU-Z, no cuda, no DirectCompute 5.0 But do have OpenCL available
--- End quote ---
Seems okay on mine (GTX460). Shows as having all the boxes ticked down the bottom. Did you get this on the machine with mixed cards?
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