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FFT

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spaffy edited this page Feb 29, 2012 · 1 revision

FFT - Fast Fourier Transform

Description: Measures performance of a single and double precision fast fourier transform (FFT). For optimal GPU performance, the size of the transform computed is fixed at 512 complex elements; varying the problem size thus changes the number of 512-element transforms computed in parallel.

Problem Sizes: (MB) 1, 8, 96, 256

Options

  • --MB [N] - Specify a specific problem size of N MB, overrides normal -s sizes

Precision: Both

Includes PCIe Transfer Time: Yes (in *_PCIe results).

Specific Tests

  • SP-FFT - Reports performance of single precision forward transform in GFLOPS/s
  • SP-FFT_PCIe - Includes PCIe Transfer time in GFLOPS/s calculation.
  • SP-FFT-INV - Reports performance of single precision inverse transform and normalization step in GFLOPs/s
  • SP-FFT-INV_PCIe - Includes PCIe Transfer time in GFLOPS/s calculation.
  • DP-FFT - Reports performance of double precision forward transform in GFLOPS/s
  • DP-FFT_PCIe - Includes PCIe Transfer time in GFLOPS/s calculation.
  • DP-FFT-INV - Reports performance of double precision inverse transform and normalization step in GFLOPs/s
  • DP-FFT-INV_PCIe - Includes PCIe Transfer time in GFLOPS/s calculation.
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