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From Apache Wiki <>
Subject [Hama Wiki] Trivial Update of "ScaLAPACK" by udanax
Date Mon, 23 Jun 2008 08:46:37 GMT
Dear Wiki user,

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The following page has been changed by udanax:

  ScaLAPACK installations include the following libraries: scalapack, redist, pblas, tools,
blacs, blacsCinit, and blacsF77init.
- == An meeting with Professor Choi J. which a member of ScaLAPACK team ==
+ == An meeting with Professor Choi J. ==
+ I finally met Prof. Choi J. which a member of ScaLAPACK team on the 23th of June, 2007 and,
He agreed to teach me some advanced topics in mathematics. I have been hearing about him for
quite a long time.
-  * What is the Block-Oriented?
-  * Why use shared memory instead of files?
-  * Are there any ways (or methods) to handle to files?
-  * What are the relative merits and demerits of the ScaLAPACK?
-  * Performance Results?
- And, In the last question
+  * Written in Fortran77 with a few in C
+  * Covers dense and band matrices, not general '''sparse matrices'''
+  * Written in a Single-Program-Multiple-Data style using explicit message passing for inter-processor
+  * Assumes matrices are laid out in a '''two-dimensional block''' cyclic decomposition.
+ Lastly, I heard that the Hama is worthwhile to continue the research on the basis of the
ScaLAPACK’s ideas.
-  * What do you think about the Hama approaches?
-  * Is Hama a good fit with a blocked algorithms?

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