[SciPy-dev] fft code for testing

eric jones eric at enthought.com
Sat May 31 16:08:38 CDT 2003


Here are results from my laptop:

Windows XP, P4, 2.2GHz

                 Fast Fourier Transform
====================================================
           |    real input     |   complex input
----------------------------------------------------
 size      |  scipy  | testing |  scipy  | testing
----------------------------------------------------
       256 |    2.68 |    1.97 |    3.52 |    2.40  (10000 calls)
       512 |    1.82 |    1.25 |    2.76 |    1.69  (5000 calls)
      1024 |    1.48 |    0.92 |    2.47 |    1.48  (2000 calls)
      2048 |    1.22 |    0.77 |    2.24 |    1.22  (1000 calls)
      4096 |    1.17 |    0.76 |    2.29 |    1.29  (500 calls)
      8192 |    1.29 |    1.08 |    3.18 |    2.17  (200 calls)
     16384 |    1.57 |    1.20 |    4.34 |    2.14  (100 calls)
     32768 |    2.94 |    1.29 |    6.40 |    3.70  (50 calls)
     65536 |    4.54 |    2.20 |    6.54 |    7.09  (20 calls)
    131072 |    5.02 |    3.30 |    7.15 |    7.61  (20 calls)
    262144 |    5.01 |    3.55 |    7.34 |    7.37  (10 calls)
.
----------------------------------------------------------------------

eric






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