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From Apache Wiki <wikidi...@apache.org>
Subject [Hama Wiki] Trivial Update of "Architecture" by udanax
Date Mon, 04 Aug 2008 08:04:59 GMT
Dear Wiki user,

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The following page has been changed by udanax:
http://wiki.apache.org/hama/Architecture

The comment on the change is:
Add some hint

------------------------------------------------------------------------------
  ----
  = Sparse Matrix =
  
+ '''NOTE:''' 
+ 
- '''NOTE''' that Sparse matrix operations cannot be optimized.
+ * Sparse matrix operations cannot be optimized.
+ * Sparse structures which are growable can exceed the initial bandwidth allocation, while
those which are not growable are fixed, and over-allocation will cause an error
+  * Matrices which are column major typically perform better with column-oriented operations,
and likewise for row major matrices. Matrix/vector multiplication is row-major, while transpose
multiplication is column-major.
+ 
  
  == Why sparse matrices? ==
  

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