Package Details: fftw-amd 3.3.8-0

Git Clone URL: https://aur.archlinux.org/fftw-amd.git (read-only, click to copy)
Package Base: fftw-amd
Description: A library for computing the discrete Fourier transform (DFT) - AMD Zen/Zen2 Optimized Version
Upstream URL: http://www.fftw.org/
Keywords: AMD DSP FFT Ryzen Zen
Licenses: GPL2
Conflicts: fftw
Provides: fftw=3.3.8-3, libfftw3.so, libfftw3_mpi.so, libfftw3_omp.so, libfftw3_threads.so, libfftw3f.so, libfftw3f_mpi.so, libfftw3f_omp.so, libfftw3f_threads.so, libfftw3l.so, libfftw3l_mpi.so, libfftw3l_omp.so, libfftw3l_threads.so, libfftw3q.so, libfftw3q_omp.so, libfftw3q_threads.so
Submitter: tuxzz
Maintainer: tuxzz
Last Packager: tuxzz
Votes: 3
Popularity: 0.50
First Submitted: 2020-05-17 18:43
Last Updated: 2020-05-17 18:43

Required by (495)

Sources (1)

Pinned Comments

tuxzz commented on 2020-05-31 17:38

Why not use Archlinux offical repository

If you are using AMD Ryzen series or EPYC series CPU, this package can boost the speed of fftw up around 30% compared to Archlinux official repository (Test on Ryzen 3700X).

Why not use Intel MKL

Intel MKL perform very poor on non-Intel CPUs, because it detect your CPU and switch to a slow path. I know there are some environment variables such as MKL_DEBUG_CPU_TYPE or MKL_NUM_THREADS. But Intel removed these trick since MKL 2020 Update 1.

WARNING

By default, this build enables -ffast-math compiler flag, which provides better performance and works well on most applications. If you require some extra numeric percision, remove it from PKGBUILD by yourself.

If you have problem on this package, report issue to AUR comment, AMD YES ^w^.

Latest Comments

dvzrv commented on 2020-09-10 11:25

Oh, nevermind... I just realized that this is a completely separate project :-/

I will ping the upstream about upstreaming their fixes.

dvzrv commented on 2020-09-10 11:21

@tuxzz: Do the AMD optimizations have a diametral effect on using Intel CPUs?

I am wondering whether to include the flag in the official package or not.

tuxzz commented on 2020-05-31 17:38

Why not use Archlinux offical repository

If you are using AMD Ryzen series or EPYC series CPU, this package can boost the speed of fftw up around 30% compared to Archlinux official repository (Test on Ryzen 3700X).

Why not use Intel MKL

Intel MKL perform very poor on non-Intel CPUs, because it detect your CPU and switch to a slow path. I know there are some environment variables such as MKL_DEBUG_CPU_TYPE or MKL_NUM_THREADS. But Intel removed these trick since MKL 2020 Update 1.

WARNING

By default, this build enables -ffast-math compiler flag, which provides better performance and works well on most applications. If you require some extra numeric percision, remove it from PKGBUILD by yourself.

If you have problem on this package, report issue to AUR comment, AMD YES ^w^.