fftw threading Intel Core i7-6800K testing with a MSI X99A WORKSTATION (MS-7A54) v1.0 and NVIDIA GeForce GTX TITAN X 12288MB on Fedora 26 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1708166-TY-FFTWTHREA33 .
fftw threading Processor Motherboard Chipset Memory Disk Graphics Audio Monitor Network OS Kernel Desktop Display Driver OpenGL Vulkan Compiler File-System Screen Resolution Intel Core i7-6800K enable-threads OpenMP omp threads new verify Intel Core i7-6800K @ 3.80GHz (12 Cores) MSI X99A WORKSTATION (MS-7A54) v1.0 Intel Xeon E7 v4/Xeon 16384MB 120GB Samsung SSD 850 + 4 x 120GB TOSHIBA-TR150 NVIDIA GeForce GTX TITAN X 12288MB (1001/3505MHz) Realtek ALC1150 ASUS PB278 Intel Connection Fedora 26 4.11.9-300.fc26.x86_64 (x86_64) GNOME Shell 3.24.2 NVIDIA 381.22 4.5.0 1.0.42 GCC 7.1.1 20170622 ext4 2560x1440 OpenBenchmarking.org Environment Details - GJS_DEBUG_OUTPUT=stderr GJS_DEBUG_TOPICS=JS ERROR;JS LOG Compiler Details - --build=x86_64-redhat-linux --disable-libunwind-exceptions --enable-__cxa_atexit --enable-bootstrap --enable-checking=release --enable-gnu-indirect-function --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-libmpx --enable-multilib --enable-offload-targets=nvptx-none --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-arch_32=i686 --with-gcc-major-version-only --with-isl --with-linker-hash-style=gnu --with-tune=generic --without-cuda-driver Processor Details - Scaling Governor: intel_pstate powersave System Details - SELinux: Enabled.
fftw threading fftw: Float + SSE - 1D FFT Size 2048 fftw: Float + SSE - 2D FFT Size 2048 Intel Core i7-6800K enable-threads OpenMP omp threads new verify 23380 14015 24252 14028 24223 14556 24144 14261 40836 19904 40182 19846 OpenBenchmarking.org
FFTW Build: Float + SSE - Size: 1D FFT Size 2048 OpenBenchmarking.org Mflops, More Is Better FFTW 3.3.4 Build: Float + SSE - Size: 1D FFT Size 2048 Intel Core i7-6800K enable-threads OpenMP omp threads new verify 9K 18K 27K 36K 45K SE +/- 281.43, N = 5 SE +/- 60.36, N = 5 SE +/- 316.75, N = 5 SE +/- 175.66, N = 3 SE +/- 85.71, N = 3 SE +/- 699.12, N = 6 23380 24252 24223 24144 40836 40182 -pthread -fopenmp -pthread -pthread -pthread 1. (CC) gcc options: -O3 -fomit-frame-pointer -mtune=native -malign-double -fstrict-aliasing -fno-schedule-insns -ffast-math -lm
FFTW Build: Float + SSE - Size: 2D FFT Size 2048 OpenBenchmarking.org Mflops, More Is Better FFTW 3.3.4 Build: Float + SSE - Size: 2D FFT Size 2048 Intel Core i7-6800K enable-threads OpenMP omp threads new verify 4K 8K 12K 16K 20K SE +/- 108.72, N = 5 SE +/- 86.54, N = 5 SE +/- 37.17, N = 5 SE +/- 142.90, N = 3 SE +/- 393.68, N = 3 SE +/- 65.08, N = 3 14015 14028 14556 14261 19904 19846 -pthread -fopenmp -pthread -pthread -pthread 1. (CC) gcc options: -O3 -fomit-frame-pointer -mtune=native -malign-double -fstrict-aliasing -fno-schedule-insns -ffast-math -lm
Phoronix Test Suite v10.8.4