Siegmar Szlavik wrote:
speaking of FLOPS, besides my ~3 MHz P4, which can perform ~6 GFLOPS, I have a much more powerfull processor in my system. It's the NV40 based GPU on the graphics card and due to its 16 pixel processing piplines the compared FLOP performance would be that of a >10 GHz P4 CPU. The GPGPU website (http://www.gpgpu.org) deals with the subject of general purpose computations on the GPU and especially the scientific computing fraction is well represented. Did anyone ever thought of using the GPU-Power for LL-testing?
I'd imagine the biggest issue would be precision. But, this paper does look intriguing.... http://www.cs.unm.edu/~kmorel/documents/fftgpu/fftgpu.pdf
They manage to achieve a 0.37Hz (about 3 seconds per iteration) 2D FFT of 1024x1024 4-channel 32bit floating data, for a computation rate of about 2.5GFLOPS.. not bad. catch-22, the NVIDIA graphics they use in their evaluation is a $400+ video card.
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