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From "Edward J. Yoon" <edwardy...@apache.org>
Subject Re: [Hama Wiki] Trivial Update of "PerformanceEvaluation" by udanax
Date Mon, 10 Nov 2008 14:22:57 GMT
Multiplication seems slow since current multiplication needs a
full-scan of B from every rows of A. To reduce the fullscan time, we
should have a 2d square algorithm.

/Edward

On Mon, Nov 10, 2008 at 10:49 PM, Apache Wiki <wikidiffs@apache.org> wrote:
> Dear Wiki user,
>
> You have subscribed to a wiki page or wiki category on "Hama Wiki" for change notification.
>
> The following page has been changed by udanax:
> http://wiki.apache.org/hama/PerformanceEvaluation
>
> ------------------------------------------------------------------------------
>
>  ||<bgcolor="#ececec"> Version ||<bgcolor="#ececec"> Operation ||<bgcolor="#ececec">
Cluster Size ||<bgcolor="#ececec"> Rows ||<bgcolor="#ececec"> Columns ||<bgcolor="#ececec">
Total Maps ||<bgcolor="#ececec"> Total Reduces ||<bgcolor="#ececec"> Time (seconds)
||<bgcolor="#ececec"> Bytes Written||
>  ||Trunk 712655 ||Addition ||2 node ||1,000 ||1,000 ||2||2||17 seconds ||66,326,104||
> + ||Trunk 712655 ||SIMDMult ||2 node ||300 ||300 ||2||2|| x || x ||
> - ||Trunk 712655 ||Multiplication ||2 node ||200 ||200 ||10||1||41 seconds ||1,277,170,348||
> + ||Trunk 712655 || SIMDMult ||2 node ||200 ||200 ||10||1||41 seconds ||1,277,170,348||
> - ||Trunk 712655 ||Multiplication ||2 node ||300 ||300 ||60||2||315 seconds ||7,070,789,092||
> + ||Trunk 712655 || SIMDMult ||2 node ||300 ||300 ||60||2||315 seconds ||7,070,789,092||
> + || || || || || || || || || ||
> + ||Trunk 712658 || SIMDMult ||2 node ||300 ||300 ||2||2||181 seconds || 5,929,512 ||
> + ||Trunk 712658 || SIMDMult ||2 node ||200 ||200 ||10||1||72 seconds || 4,931,106 ||
> - ||Trunk 712658 ||Multiplication ||2 node ||300 ||300 ||60||2||267 seconds ||16,507,848||
> + ||Trunk 712658 || SIMDMult ||2 node ||300 ||300 ||60||2||267 seconds ||16,507,848||
> +
>
>  Dependencies Information :
>
>



-- 
Best Regards, Edward J. Yoon @ NHN, corp.
edwardyoon@apache.org
http://blog.udanax.org

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