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 <[email protected]> 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 <[email protected]>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 <[email protected]> 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 <[email protected] >> >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 <[email protected]> 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. >> >> [email protected] >> >> 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. >> [email protected] >> 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. [email protected] http://blog.udanax.org
