Forum > GPU crunching
GPU client
Devaster:
lol nice times by knabech - by me my 8500 gives not only 19 % but 100% slowdown .....
Radiohead:
--- Quote from: Devaster on 15 Dec 2007, 10:19:40 am ---and yes its still slower than any CPU version ....
--- End quote ---
Strangely....
I always thought that Nvidia 8 Series faster than Intel C2D
http://en.wikipedia.org/wiki/FLOPS
"As of 2007, the fastest PC processors perform over 30 GFLOPS.[8] GPUs in PCs are considerably more powerful in terms of pure FLOPS. For example, in the GeForce 8 Series the nVidia 8800 Ultra performs around 576 GFLOPS on 128 Processing elements. This equates to around 4.5 GFLOPS per element, compared with 2.75 per core for the Blue Gene/L. It should be noted that the 8800 series performs only Single precision calculations, and that while GPUs are highly efficient at calculations they are not as flexible as a general purpose CPU."
And Nvidia promises that the new card (GeForce 9800) will be even faster. 1 or 3 (!!!!) Tflops.... http://www.nordichardware.com/index.php?news=1&action=more&id=6911
I understand that this performance is not at all the tasks...
Perhaps the algorithm sahcuda can optimize computing?
seti_britta mathematician :)
It can help? ;D
Radiohead:
--- Quote from: Devaster on 15 Dec 2007, 10:38:38 am ---lol nice times by knabech - by me my 8500 gives not only 19 % but 100% slowdown .....
--- End quote ---
8500 - 16/16 processors
8800 GTS - 96/96 processors
Radiohead:
--- Quote from: Devaster on 15 Dec 2007, 10:19:40 am ---something wrong is on your computer ...... :o
--- End quote ---
Again, I launched the knabench.
Now all results - strongly similar :o
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Devaster:
this code is not optimized ... there are a lot mem transfers that can be avoided for example and so on ... next there is mixed the CPU and GPU code in 95:5 .... and not used async access to device ....
first it mus be validated then optimized
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