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Thread: 12-Core ARM Cluster Benchmarked Against Atom, Ivy Bridge, Fusion

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  1. #1
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    Default 12-Core ARM Cluster Benchmarked Against Atom, Ivy Bridge, Fusion

    Phoronix: 12-Core ARM Cluster Benchmarked Against Atom, Ivy Bridge, Fusion

    Last week I shared my plans to build a low-cost, 12-core, 30-watt ARMv7 cluster running Ubuntu Linux. The ARM cluster that is built around the PandaBoard ES development boards is now online and producing results... Quite surprising results actually for a low-power Cortex-A9 compute cluster. Results include performance-per-Watt comparisons to Intel Atom and Ivy Bridge processors along with AMD's Fusion APU.

    http://www.phoronix.com/vr.php?view=17473

  2. #2
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    You should be able to get a lower power usage by using a single power converter rather than one for each.

  3. #3
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    "other planned optimizations include: investigating performance differences if using a high-speed NAS with NFS mount for the cluster rather than SDHC cards (e.g. using something like the Excito B3) or a USB-based SSD "

    why not just go and grab a freeNAS ISO and setup up NFS on any old PC you have around that boots a USB stick, or even try using ISCSI that works for me for the fastest Ethernet block Transfer, plus OC FreeNAS has MANY more file options you might want to also test this ARM cluster over...
    http://www.freenas.org/features/item...ategory_id=108
    Last edited by popper; 06-14-2012 at 06:38 PM.

  4. #4
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    Quote Originally Posted by AJenbo View Post
    You should be able to get a lower power usage by using a single power converter rather than one for each.
    Exactly what I was thinking. Six transformers are going to perform a lot worse than one (assuming the boards can cope with the voltage droop). I'd actually be surprised if there wasn't a good multi-rail switching PSU designed for this very purpose.

  5. #5
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    I think though the power usage of both the atom 330 and the e350 is quite awful too (well the idle power but since most of the power is apparently idle power...) it should be possible to do quite a bit better with the right boards.
    That said if there's major performance gains with newer distro on the pandaboard that should boost efficiency too. In any case IVB will still blow it away :-).

  6. #6
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    6 pandaboards mean:
    -6 switchmode power bricks (typically 85% efficient)
    -6 onboard switchmode power ICs (90%)
    -6 linear voltage regulators (60%)
    -6 wifi and bluetooth modules (did you turn these off?)
    -6 ethernet controllers (at least 200mW per port)
    -6 hdmi controllers
    -6 dvi controllers

  7. #7
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    Ivy bridge is this year tech, Cortex A9 is 2 year old tech. This year technology for ARM is Cortex A15,

  8. #8
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    Quote Originally Posted by AJenbo View Post
    You should be able to get a lower power usage by using a single power converter rather than one for each.
    Absolutely, one power supply powering the whole shebang vs. a separate power converter for each will certainly increase efficiency.

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