fft: complex-data, 1D transforms genial float fftw estimate float fftw measure float genial double fftw estimate double fftw measure double 2 143 134 131 137 137 138 4 486 432 432 533 511 504 8 1430 1137 1138 1415 1344 1338 16 3094 1889 1890 2903 2994 2965 32 5023 4646 4666 4539 4815 4473 64 7325 5837 6952 5354 3921 5964 128 8644 7583 9576 3579 4382 6088 256 8436 8421 9346 4366 5323 5790 512 9332 9267 11667 4548 5606 6597 1024 9552 9776 11604 4165 5564 5550 2048 8158 9987 11168 3628 5297 5672 4096 8316 6591 10558 3261 3519 5041 8192 7733 5772 7939 3424 3752 5094 16384 7684 6014 7705 3211 3897 4946 32768 7528 6255 7311 3045 3979 4780 65536 6915 6669 7670 2181 4016 4598 131072 4913 5883 7442 1593 2340 2640 262144 3327 4082 4837 1321 1746 2218 fft: real-data, 1D transforms genial float fftw estimate float fftw measure float genial double fftw estimate double fftw measure double 2 65 71 71 65 64 64 4 265 258 240 276 259 264 8 796 661 655 748 637 642 16 1749 1420 1416 1781 1418 1422 32 3464 2339 2343 3223 2358 2352 64 5714 3073 3063 4793 2914 3098 128 7891 3378 3745 5727 3381 3772 256 6729 4402 4768 4850 3463 4000 512 7175 4855 5448 5290 3765 4226 1024 8590 5417 5985 5310 3990 4412 2048 7394 5816 6305 4016 4083 4447 4096 7455 6020 6282 4089 4093 4241 8192 7165 4899 6447 4132 3050 3998 16384 7655 4588 5558 4295 3240 4058 32768 7450 4606 5707 3468 3352 4048 65536 6326 4975 5639 3185 3447 3987 131072 6055 5119 5749 2635 3225 3515 262144 4860 4754 4848 1734 2053 2253 fft: complex-data, 2D transforms genial float fftw estimate float fftw measure float genial double fftw estimate double fftw measure double (4x4) 1078 2363 2300 1289 2401 2541 (8x8) 3586 6254 6133 2855 5894 6115 (16x16) 5228 7495 7660 4067 7611 7665 (32x32) 6656 9328 9348 4650 8118 8160 (64x64) 7647 9419 9283 3796 5626 5668 (128x64) 7012 4437 5641 3963 3138 4805 (128x128) 7317 4397 5719 3412 2726 4588 (64x256) 6855 7911 8683 3571 4514 4723 (256x128) 8012 4704 6417 3802 2826 4709 (128x256) 7255 4522 6559 3768 2480 4537 (64x512) 7085 7997 8700 3610 4846 5080 (256x256) 7046 4740 6606 3911 2737 4477 (128x512) 7455 4907 6769 3754 2585 4692 (128x1024) 7509 4969 6662 2930 2017 3911 (256x1024) 6063 4223 5450 2336 1911 2996 (2048x256) 3935 3586 3586 1195 905 1743 (512x1024) 4831 3835 4881 2241 1893 2640 (512x2048) 4404 3715 4438 1887 1651 2644 (4096x512) 2202 2013 2601 1127 688 1409 (2048x1024) 2451 2384 3204 1226 867 1838 (2048x2048) 2461 2426 3691 1213 894 2307 (2048x4096) 2573 2436 3686 1234 882 2315 fft: real-data, 2D transforms genial float fftw estimate float fftw measure float genial double fftw estimate double fftw measure double (4x4) 572 1108 1105 638 941 1099 (8x8) 1958 2573 2561 1808 3203 3123 (16x16) 3803 3396 3404 3293 3959 4406 (32x32) 5461 3583 3985 3760 5000 5013 (64x64) 6598 3556 4164 4342 4813 4717 (128x64) 6663 3537 4413 4167 3110 3942 (128x128) 7321 3550 4730 4355 3214 4060 (64x256) 6334 3294 4162 3896 4346 4552 (256x128) 7956 3770 4979 4907 3169 4317 (128x256) 6432 3276 4070 3884 2949 3969 (64x512) 6424 2993 4222 4359 4565 4757 (256x256) 6918 3416 4032 4297 3164 4247 (128x512) 6543 2954 4068 4228 3266 4100 (128x1024) 7498 3131 3955 4217 3348 4083 (256x1024) 7797 3173 3846 3798 2607 3563 (2048x256) 5255 3312 3885 2416 2017 2565 (512x1024) 5628 2814 3511 2590 1868 2764 (512x2048) 4509 2583 3093 2254 1678 2674 (4096x512) 4074 2532 3034 2243 1982 2169 (2048x1024) 4335 2753 3359 2167 1789 2563 (2048x2048) 4024 2644 3085 2014 1816 2644 (2048x4096) 3968 2645 2962 2032 1817 2504