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Thread: ARM On Ubuntu 12.04 LTS Battling Intel x86?

  1. #1
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    Default ARM On Ubuntu 12.04 LTS Battling Intel x86?

    Phoronix: ARM On Ubuntu 12.04 LTS Battling Intel x86?

    In recent weeks I have shown how Ubuntu 12.04 is ARM-ing up for better performance on the ARMv7 architecture by enabling hard-float builds and how the TI OMAP4 support has come together resulting in significant performance gains. Nevertheless, how is modern ARM hardware now comparing to the low-end Intel x86 competition? In this article are some results from Ubuntu 12.04 comparing the ARM performance to some Intel Core, Pentium, and Atom hardware.

    http://www.phoronix.com/vr.php?view=17078

  2. #2
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    Default 1.2GHz?

    On the last page you mention that the ARM cpu is a dual-core 1.9GHz. It's actually 1.2GHz.

    The Tegra 3 results will be very interesting to see!

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    Quote Originally Posted by phoronix View Post
    Phoronix: ARM On Ubuntu 12.04 LTS Battling Intel x86?

    In recent weeks I have shown how Ubuntu 12.04 is ARM-ing up for better performance on the ARMv7 architecture by enabling hard-float builds and how the TI OMAP4 support has come together resulting in significant performance gains. Nevertheless, how is modern ARM hardware now comparing to the low-end Intel x86 competition? In this article are some results from Ubuntu 12.04 comparing the ARM performance to some Intel Core, Pentium, and Atom hardware.

    http://www.phoronix.com/vr.php?view=17078
    Obviously ffmpeg is not a great one to use b/c that has tons of x86 asm.http://arstechttp://arstechnica.com/...mment-22567953
    An interesting alternative would be some gstreamer pipelines that utilize ORC.
    That would make it fairly hardware agnostic while also testing the vector hardware.
    I'm really looking forward to Krait, Exynos 44xx+, and OMAP 5. Based on the dmips alone I would expect around a 30% increase of performance per Hz.

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    Quote Originally Posted by liam View Post
    Obviously ffmpeg is not a great one to use b/c that has tons of x86 asm.
    FFmpeg also has a lot of ARM specific code. But indeed perhaps that particular case Phoronix tested is hitting a C-only path.

  5. #5
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    Default Atom N270

    The Atom N270 is single core but on the first page you write '2 Cores'.
    I saw you make this mistake in the previous articles too.

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    Quote Originally Posted by Milli View Post
    The Atom N270 is single core but on the first page you write '2 Cores'.
    I saw you make this mistake in the previous articles too.
    It isn't a mistake, it's Hyper-Threading.

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    Quote Originally Posted by Nedanfor View Post
    It isn't a mistake, it's Hyper-Threading.
    Then it's the number of threads NOT the number of cores

    e.g. I have a quad-core i7 which has 8 threads

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    No of cores really doesn't matter any more. For what I care they could make
    a half a core CPU or 200 core CPU. It certainly is interesting from engineering
    point of view, however, the Market (with big capital M) is interested in:

    - performance
    - power
    - availability (software included)
    - price

    If these parameters are looking good where you're standing at the moment,
    you should buy it. And it's heavily usage case related. So things like 'it's not fair,
    this one has one core, and this one two core' really don't matter.

    On a related note... This Atom is not a contender. Medfield is a contender.
    And a tough one, if I may say. Krait might break it's teeth on it.

  9. #9
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    Quote Originally Posted by clavko View Post
    On a related note... This Atom is not a contender. Medfield is a contender.
    And a tough one, if I may say. Krait might break it's teeth on it.
    Medfield isn't a contender since it's not available.

    And what makes you think it will be significantly faster than n270? It's the same micro-architecture with some tweaks. Oh and with a reduced bus to memory, so I don't expect Medfield to be faster than old Atom. But I'll wait for availability before making that a claim

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    Quote Originally Posted by ldesnogu View Post
    I don't expect Medfield to be faster than old Atom.
    I agree with you, however... Android might go down really bad upon Win 8 arrival.
    Microsoft does not have a history of locking your devices to a specific milestone in OS
    development (think Froyo, GingerBread, ICS). People will like the 'upgradeability'.
    And x86 legacy code support is not something you can ignore. Considering performance
    isn't really a problem lately (not even for mobile), it might just boil down to a better
    software support and longer battery life. It will be exciting, thats for sure.

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