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From "Edward J. Yoon" <edwardy...@apache.org>
Subject Re: Hama status /
Date Wed, 03 Jun 2009 10:14:34 GMT
FYI, I ran some benchmarks - http://wiki.apache.org/hama/PerformanceEvaluation

If you need any help, Pls let us know.

Thanks.

On Wed, Jun 3, 2009 at 6:55 PM, tog <guillaume.alleon@gmail.com> wrote:
> Yes I understand the difference between MPI and Hadoop - I have been using
> MPI before it actually exists :)
> But as you phrased it, I had the impression that Hama was working on a 1
> node/core cluster !!
>
> Regards
> Guillaume
>
> On Wed, Jun 3, 2009 at 5:44 PM, Edward J. Yoon <edwardyoon@apache.org>wrote:
>
>> Hi,
>>
>> There is some difference between Map/Reduce and MPI programming. MPI
>> is based on and designed for fast parallel computing using network
>> communication on small cluster. Since MPI requires network
>> communication, Increased node numbers, there is a linear increase of
>> network cost at same time. On the contrary, Map/Reduce is designed to
>> distributed processing by connecting many commodity computers
>> together. Therefore, The algorithms should avoid large amounts of
>> communication for best performance and that key is the 'sequential
>> process'.
>>
>> Thanks.
>>
>> On Wed, Jun 3, 2009 at 6:07 PM, tog <guillaume.alleon@gmail.com> wrote:
>> > Hi Edward
>> >
>> > I have a test to do which is basically Sparce Mat Vec multiplication and
>> Mat
>> > norm computation. So that should be possible with Hama in its current
>> state
>> > I guess.
>> > What do you mean by "sequentially executed"
>> >
>> > Cheers
>> > Guillaume
>> >
>> > On Wed, Jun 3, 2009 at 5:00 PM, Edward J. Yoon <edwardyoon@apache.org
>> >wrote:
>> >
>> >> Hi,
>> >>
>> >> Currently, the basic matrix operations are implemented based on the
>> >> map/reduce programming model. For example, the matrix get/set methods,
>> >> the matrix norms, matrix-matrix multiplication/addition, matrix
>> >> transpose. In near future, SVD, Eigenvalue decomposition and some
>> >> graph algorithms will be implemented. All the operations are
>> >> sequentially executed.
>> >>
>> >> Thanks.
>> >>
>> >> On Wed, Jun 3, 2009 at 5:45 PM, tog <guillaume.alleon@gmail.com> wrote:
>> >> >
>> >> > Hi,
>> >> >
>> >> > I would like to know what is the status of Hama ?
>> >> > What am I able to do with it ?
>> >> > What are the future directions ?
>> >> >
>> >> > Cheers
>> >> > Guillaume
>> >>
>> >>
>> >>
>> >> --
>> >> Best Regards, Edward J. Yoon @ NHN, corp.
>> >> edwardyoon@apache.org
>> >> http://blog.udanax.org
>> >>
>> >
>> >
>> >
>> > --
>> >
>> > PGP KeyID: 1024D/47172155
>> > FingerPrint: C739 8B3C 5ABF 127F CCFA  5835 F673 370B 4717 2155
>> >
>> > http://cheztog.blogspot.com
>> >
>>
>>
>>
>> --
>> Best Regards, Edward J. Yoon @ NHN, corp.
>> edwardyoon@apache.org
>> http://blog.udanax.org
>>
>
>
>
> --
>
> PGP KeyID: 1024D/47172155
> FingerPrint: C739 8B3C 5ABF 127F CCFA  5835 F673 370B 4717 2155
>
> http://cheztog.blogspot.com
>



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

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