FFTW 3.3.3 available; faster ARM NEON and x86 AVX; MPI bugfix.
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Matteo Frigo
Nov 25, 2012, 4:12:34 PM11/25/12
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Dear FFTW users,
Version 3.3.3 of FFTW is now available from the FFTW web page
(www.fftw.org). This version improves performance on x86+AVX and on
ARM+NEON. In addition, we fixed a deadlock in the MPI implementation.
Regards,
Matteo Frigo
Changes since 3.3.2:
* Fix deadlock bug in MPI transforms (thanks to Michael Pippig for the
bug report and patch, and to Graham Dennis for the bug report).
* Use 128-bit ARM NEON instructions instead of 64-bits. This change
appears to speed up even ARM processors with a 64-bit NEON pipe.
* Speed improvements for single-precision AVX.
* Speed up planner on machines without "official" cycle counters, such
as ARM.
Version 3.3.3 of FFTW is now available from the FFTW web page
(www.fftw.org). This version improves performance on x86+AVX and on
ARM+NEON. In addition, we fixed a deadlock in the MPI implementation.
Regards,
Matteo Frigo
Changes since 3.3.2:
* Fix deadlock bug in MPI transforms (thanks to Michael Pippig for the
bug report and patch, and to Graham Dennis for the bug report).
* Use 128-bit ARM NEON instructions instead of 64-bits. This change
appears to speed up even ARM processors with a 64-bit NEON pipe.
* Speed improvements for single-precision AVX.
* Speed up planner on machines without "official" cycle counters, such
as ARM.
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