iterative solution of large sparse systems
Some desasters attributable to poor numerics.
A few software bugs with consequences
To download these files right click on the link and choose 'Save target as'. Select the directory you wish to download the file to and change the 'Save as type' box to 'All files' otherwise '.txt' wil be tagged onto the filename.
The following matrices have been downloaded from the Matrix Market. The matrices are stored in the Matrix Market file format which can be read using the mmread M-file. This file and the matrix data needs to be in the same directory (or the path changed accordingly) as your script/file.
To read in a matrix to the variable A simply include
in your script/function. Note A will be defined to be sparse - you don't need to do anything else