SourcePro Analysis ships with a version of the Basic Linear Algebra Subroutines (Level 1), abbreviated BLAS, which is contained in the public domain linear algebra library LAPACK. When you build the Linear Algebra Module or the Essential Math Module, these routines are compiled into a separate library so that you may substitute your own version of the LAPACK BLAS. To do this, simply link your BLAS library into your application in place of the one included with SourcePro Analysis.