Would you send me your hard float experiment results you presented in Budapest?
david.rusling at linaro.org
Fri Sep 2 10:41:04 UTC 2011
you'd need to use multiarch and have multiple installed libraries so that you could support both hard and soft float ABI. Does Android do anything different / interesting in its image / shared library loader(s)?
On 30 Aug 2011, at 17:24, Zach Pfeffer wrote:
> I'd like you to meet Jim who did the initial hardfloat work. This
> email contains the results that Jim produced.
> I believe that the conclusion was that skia and webkit may benefit,
> but that such benefits would impose an undue burden on Android's
> distribution model which tries to create libs that can run on as many
> architectures as possible.
> ---------- Forwarded message ----------
> From: Jim Huang <jserv at 0xlab.org>
> Date: 7 August 2011 18:01
> Subject: Re: Would you send me your hard float experiment results you
> presented in Budapest?
> To: Zach Pfeffer <zach.pfeffer at linaro.org>
> 2011/8/7 Zach Pfeffer <zach.pfeffer at linaro.org>:
>> Thanks. Would it be possible to post them by the end of the day?
> skia ->
> Switch from VFP back to fixed scalar based calculation
> Previous configuration enabled ARM VFP for scalar float, but VFP on
> ARM11 is not as powerful as VFPv3 or NEON.
> Reference benchmark:
> Item Fixed based VFP-based
> ------------ ----------- ---------
> Draw Canvas 58.37 fps 58.40 fps
> Draw Circle 37.48 fps 22.93 fps
> Draw Circle2 17.14 fps 18.31 fps
> Draw Rect 17.62 fps 20.69 fps
> Draw Arc 24.79 fps 27.45 fps
> Draw Image 19.08 fps 18.73 fps
> Draw Text 29.22 fps 25.79 fps
>> Also, have you sync'd up with Mike? He wants to negotiate on your contract.
> I sent mail to Mike already. I don't know how to proceed.
> <Mail Attachment><NOTE>_______________________________________________
> linaro-dev mailing list
> linaro-dev at lists.linaro.org
More information about the linaro-dev