From: "Peter Kümmel" <syntheticpp@gmx.net>
To: buildroot@busybox.net
Subject: [Buildroot] FFTW optimized for ARM and NEON FPU
Date: Tue, 24 Feb 2015 10:44:40 +0100 [thread overview]
Message-ID: <54EC4808.3040209@gmx.net> (raw)
In-Reply-To: <54EBF694.6090705@gmail.com>
+FFTW_CONF_OPTS+= ARM_FLOAT_ABI=softfp
Shouldn't it use hardfp?
https://wiki.debian.org/ArmHardFloatPort/VfpComparison
Am 24.02.2015 um 04:57 schrieb guillaume william brs:
> Hello,
>
> I am working on a cortex-a9 (zynq SoC, mainly zc706)
> I faced fairly slow computations of FFT using this library
> with the default configuration (20MFlops).
>
> I modified package/fftw.mk to optimize the library
> compilation as long as an FPU is available,
> NEON in this case: this increased the number of MFlops to
> 500-600.
>
>
>
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot
>
next prev parent reply other threads:[~2015-02-24 9:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-24 3:57 [Buildroot] FFTW optimized for ARM and NEON FPU guillaume william brs
2015-02-24 9:44 ` Peter Kümmel [this message]
2015-03-15 23:41 ` Yann E. MORIN
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