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List: beowulf
Subject: Re: [Beowulf] GPU based cluster fo machine learning purposes
From: Piotr =?iso-8859-1?Q?Kr=F3l?= <pietrushnic () gmail ! com>
Date: 2014-04-13 23:50:16
Message-ID: 20140413235014.GB3985 () echad
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On Fri, Apr 11, 2014 at 09:25:05AM -0400, Douglas Eadline wrote:
>
> > On Thu, Apr 10, 2014 at 02:07:40PM +0000, Lux, Jim (337C) wrote:
> > > On 4/10/14 5:28 AM, "Piotr Król" <pietrushnic@gmail.com> wrote:
> >
> > The question is if they can beat $14.7/DP GFLOPS (13GFLOPS/$192) ?
>
> Here are some data points (based on actual measurements):
>
> For about $3,000 (US) you can easily put together a 4 node
> X86 system with $6/DP GFLOPS running HPL. Doubling the
> number of nodes would probably preserve this
> price-to-performance and get you close to 1 DP TFLOP.
>
> In terms of Power/Performance it would run at
> around .75 Watt/DP GFLOP running HPL.
Thanks Douglas,
these numbers force me to do some research. As I wrote in other e-mails I
care more about small size and power consumption than performance but I
would like to get best available on market. I know that there is no free
lunch. I found this two boards very interesting:
- Arndale Octa Board (Exynos 5420) with Mali™-T628 MP6 - theoretical max
for Mali GPU is 109 GFLOPS (what gives $179/102 DP GFLOPS =
1.79$/GFLOPS) with spec I read that board is powered by 5V/3A adapters
(so max power consumption is 15W - 15W/102 DP GFLOPS = 0.14 W/DP
GFLOPS).
- Odroid-XU with SGX544 MP3 - $169/51.1 DP GFLOPS = 3.3$/GFLOPS, max
power 20W, so 20W/51.1 DP GFLOPS = 0.39W/GFLOPS.
Performance data came from here:
http://kyokojap.myweb.hinet.net/gpu_gflops/
That was best what I can found.
I also took a look on Teensy3.1 suggested by Jim. Unfortunately even if
I forget about Linux it can compute 0.6 MFLOPS so $19.8/0.9 = 33$/MFLOP
> ( and power 0.032A*3.3V=0.1056W 0.1056/0.6 = 0.176 W/MFLOPS -> 176W/GFLOPS !?
Any suggestion about things that I should take care of when building
this kind of low power cluster ?
Regards,
Piotr Król
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