Issues

• AVX512 performance

  FFTW/fftw3#420 · Filter by author ahorek opened on Sep 23, 2026
  2

• Quad precision variant fails to build on little-endian Power (ppc64el)

  FFTW/fftw3#419 · Filter by author MingcongBai opened on Sep 21, 2026
  2

• MPI Support in CMake?

  FFTW/fftw3#418 · Filter by author BwL1289 opened on Sep 10, 2026

• fftw_complex is not _Complex in C++

  FFTW/fftw3#417 · Filter by author ilazaric opened on Sep 10, 2026
  2

• Clarification on intended support for negative strides in FFTW

  FFTW/fftw3#414 · Filter by author haiwenheaven opened on Jul 26, 2026
  2

• FFTW 3.3.11 built with --enable-sve cannot run on non-SVE Arm systems

  FFTW/fftw3#412 · Filter by author kuni-ishii opened on Jul 3, 2026

• NVHPC 26.3 ICE with FFTW 3.3.11 when enabling SVE

  FFTW/fftw3#404 · Filter by author antoine-morvan opened on Apr 24, 2026

• don't use CLOCK_SGI_CYCLE on Linux ARM systems

  FFTW/fftw3#403 · Filter by author stevengj opened on Apr 21, 2026
  1

• PFT and Auto-MPFT for a Contiguous Subset of Fourier Coefficients

  FFTW/fftw3#398 · Filter by author stumarcus314 opened on Dec 7, 2025
  1

• CMake doesnt export when installing correctly targets

  FFTW/fftw3#396 · Filter by author lucian-student opened on Nov 9, 2025
  5

• How to deal with fftw thread callback called recursively

  FFTW/fftw3#388 · Filter by author milasudril opened on Sep 13, 2025

• Missing declarations and other problems in the *.f03 files for FORTRAN

  FFTW/fftw3#387 · Filter by author brianreinhold opened on Sep 11, 2025

• slvndx overflows its 12 bits

  FFTW/fftw3#379 · Filter by author jcelerier opened on Mar 18, 2025
  2

• checks fail in wisdom-only mode on single-precision aarch64+neon+openmp

  FFTW/fftw3#378 · Filter by author rdolbeau opened on Feb 8, 2025
  3

• can't use allocateble array in fortran

  FFTW/fftw3#375 · Filter by author windofport opened on Jan 12, 2025

• RVV/R5V implementation and optimization

  FFTW/fftw3#371 · Filter by author ken-unger opened on Oct 8, 2024
  7

• FFTW local make issue in conda environment on Linux

  FFTW/fftw3#370 · Filter by author ZhangxiJesseFeng opened on Oct 7, 2024

• Appropriate "number of threads" for planning with OpenCilk

  FFTW/fftw3#369 · Filter by author ProExpertProg opened on Oct 2, 2024
  2

• configure error

  FFTW/fftw3#368 · Filter by author dmitrypek opened on Sep 30, 2024
  1

• How to build universal on intel mac

  FFTW/fftw3#365 · Filter by author Darling-Lee opened on Sep 7, 2024
  1

• default flags and how to use inplace

  FFTW/fftw3#364 · Filter by author Kidd-61 opened on Aug 22, 2024
  3

• "fftw_execute " case "Segmentation fault"

  FFTW/fftw3#357 · Filter by author NevilleAdvan opened on Jun 6, 2024
  4

• Compilation Error

  FFTW/fftw3#353 · Filter by author Juliya32 opened on May 6, 2024
  3

• Compile application error

  FFTW/fftw3#352 · Filter by author chensisi0730 opened on Apr 30, 2024

• IFFT error

  FFTW/fftw3#351 · Filter by author Apriqi opened on Apr 19, 2024
  3