DFT

• DFT demo

データ出典

• 世界で一番熱い町さばえ MP3 by Sing J Roy CC BY

ベンチマーク

44100 samples 1sec

• M1 Macbook Pro, Deno in JavaScript, 33.18 sec
• M1 Macbook Pro, in C, 11.786060 sec
• M1 Macbook Pro, in C with 6 threads, 2.250893 sec
• Core i7-6700 Windows 10, Deno in JavaScript, 84.94 sec
• Core i7-6700 Windows 10, in C (gcc), 132.6863497 sec
• Core i7-6700 Windows 10, in C (nvcc), 34.3973202 sec
• Core i7-6700 Windows 10 NVIDIA RXT 3060Ti, 0.074750 sec
• Core i7-6700 Windows 10 NVIDIA RXT 3060Ti, 0.007705 sec (fast-math)

132300 samples 3sec

• M1 Macbook Pro, in C with 6 threads, 22.464575 sec
• Core i7-6700 Windows 10 NVIDIA RXT 3060Ti, 0.690248 sec
• Core i7-6700 Windows 10 NVIDIA RXT 3060Ti, 0.044306 sec (fast-math)

441000 samples 10sec

• M1 Macbook Pro, in C with 6 threads, 266.189622 sec
• Core i7-6700 Windows 10 NVIDIA RXT 3060Ti, 9.357527 sec
• Core i7-6700 Windows 10 NVIDIA RXT 3060Ti, 0.387023 sec (fast-math)

6028176 samples all

• Core i7-6700 Windows 10 NVIDIA RXT 3060Ti, 63.493813 sec (fast-math)

Windowsでの時間計測方法

powershell -C Measure-Command {./a.exe}

compile dft_st.c by nvcc on Windows

nvcc dft_st.c -D_USE_MATH_DEFINES

compile dft_mt.c by mac

gcc dft_mt.c -D__device__=