Opened 3 years ago

Closed 3 years ago

#14379 closed enhancement (fixed)

fftw-3.3.9

Reported by: Bruce Dubbs Owned by: Bruce Dubbs
Priority: normal Milestone: 10.1
Component: BOOK Version: SVN
Severity: normal Keywords:
Cc:

Description

New point version.

Change History (3)

comment:1 by Bruce Dubbs, 3 years ago

Owner: changed from blfs-book to Bruce Dubbs
Status: new → assigned

comment:2 by Bruce Dubbs, 3 years ago

FFTW 3.3.9:

  • New API fftw_planner_nthreads() returns the number of threads currently being used by the planner.
  • Fix incorrect math in 128-bit generic SIMD
  • Fix wisdom for avx512.

The avx512 alignment requirement was set to 64 bytes, but this is wrong. Alignment requirements are a property of the platform (e.g., x86) and not of the instruction set (e.g., AVX). Among other things, this broke wisdom with avx512.

Note that avx512 support is still experimental because the FFTW authors have no avx512 hardware available for testing.

  • fftw_threads_set_callback function to change the threading backend at runtime.

comment:3 by Bruce Dubbs, 3 years ago

Resolution: → fixed
Status: assigned → closed

Fixed at revision 23997.

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