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From Apache Wiki <wikidi...@apache.org>
Subject [Hama Wiki] Trivial Update of "Architecture" by udanax
Date Thu, 03 Jul 2008 01:42:26 GMT
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/Architecture

------------------------------------------------------------------------------
  [[BR]]~-''But please make them stand out by '''small''' them. -- Edward J. Yoon''-~
  
  ----
- ScaLAPACK handles only dense and banded matrices for using optimization strategies for High-Performance,
But, Hama will be handles both dense/banded and sparse matrices.
- 
  = Sparse Matrix =
  
  '''NOTE''' that Sparse matrix operations cannot be optimized.
@@ -32, +30 @@

    0  0  0       (2,3) = 1
  }}}
  
+ See also: [http://labs.google.com/papers/bigtable-osdi06.pdf Bigtable], A Distributed Storage
System for Structured Data
+ 
  == Sparse Functions ==
  
-  * conversion
-  * Manipulate sparse matrices
+ === Manipulate sparse matrices ===
+ ||<bgcolor="#ececec">'''Function''' ||<bgcolor="#ececec">'''Explanation''' ||
+ ||nnz ||<99%>returns '''number of non zero''' elements in SM||
+ ||nonzeros ||<99%>Returns a vector of the '''non-zero''' values of the sparse matrix
S||
-  * Graph Theory
-  * Reordering
-  * Linear Algebra
-  * Iterative techniques
-  * Miscellaneous
  
+ === Linear Algebra ===
+ 
+ ||<bgcolor="#ececec">'''Function''' ||<bgcolor="#ececec">'''Explanation''' ||
+ ||spdetermin ||<99%>Compute the '''determinant''' of sparse matrix A||
+ ||spcholesky ||<99%>Compute the Cholesky factor, '''R''', of the symmetric positive
definite||
+ ||splcholesky ||<99%>Compute the Cholesky factor, '''L''', of the symmetric positive
definite||
+ ||splu ||<99%>Compute the '''LU''' decomposition of the sparse matrix A||
+ 
+ === Iterative techniques ===
+ 

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