[CSC 435] Matrices for Accuracy Testing

[Andrew J. Pounds]

Guys -- while trying to look for a good example of a matrix that needs 
conditioning I found myself trying to test the accuracy of some of my 
own matrix codes.  This prompted me to build a 100x100 random matrix and 
its inverse.   It occurred to me that such a matrix could be EXTREMELY 
useful if you are trying to test the accuracy of your matrix multiply 
routines using serial, OpenMP, pThreads, and MPI methods.  Basically if 
you multiply the matrix and its inverse together you should get the 
identity matrix.  Summing up the diagonal should equal the dimension of 
the matrix.

If you would like to use these for testing, the files are located on the 
class website in the DATA section.

http://theochem.mercer.edu/csc435





-- 
Andrew J. Pounds, Ph.D.  (pounds_aj at mercer.edu)
Professor of Chemistry and Computer Science
Mercer University,  Macon, GA 31207   (478) 301-5627
http://faculty.mercer.edu/pounds_aj