Numerical Analysis/ DCS/ University of Toronto

The RSCALE package

RSCALE is a collection of Fortran subroutines designed to solve Bordered Almost Block Diagonal (BABD) linear systems on either a sequential or parallel shared-memory computer. When run on a sequential computer, all parallel directives in the package are ignored (they are treated as comments). Complete usage and calling sequence details are included in subroutine rscale.

Source code

There are 16 subroutines in total:

Entry subroutine
- rscale
Factorization subroutines
- rscfa
- 3-level factorization
Solve subroutines
- rscsl
- 3-level forward-solve
- 3-level backward-solve
Auxiliary subroutines

Installation

RSCALE must be linked with LAPACK and the level-3 BLAS. Follow these steps to install on a sequential computer:

Download the 16 subroutines listed above.
Compile (along with YourApplication.f) with f77 -c *.f
Link and load with f77 *.o -LYourLibrary -llapack -lblas

Last modified by Richard Pancer, 7 October 2004.
Comments, complaints and reports of broken links to pancer@utsc.utoronto.ca.