LAPACK 2.0 Available on RCS

Version 2.0 of the LAPACK subroutine library is now available on all RCS platforms.

To access the new LAPACK library, enter the following commands from a UNIX prompt:

   
   setup lapack-new
   f77 mycode.f -L$SETUP_TempDir -llapack -lblas

Release 2.0 of LAPACK introduces new routines, as well as extends the functionality of existing routines. The most significant new routines and functions include:

• the generalized nonsymmetric eigenproblem Ax = lambda Bx
• the generalized definite banded eigenproblem Ax = lambda Bx
• two generalized linear least squares problems (least squares with linear constraints, and the Gauss-Markov linear model problem)
• the generalized (quotient) singular value decomposition
• faster routines for symmetric eigenproblems, based on divide-and-conquer
• a faster bidiagonal SVD (singular values only)
• reduction of a band matrix to bidiagonal form
• improved linear system drivers, to better reuse existing factorizations, and return the pivot growth factor
• the least squares drivers now return the residual root-sum-of-squares

LAPACK 2.0 will become the system default on Tuesday, January 7, 1997. You may still access LAPACK 1.0b until February 1, 1997 by entering setup lapack-old from a UNIX prompt before running the program.

If you have any firther questions about using LAPACK 2.0, please contact the consultants at the ACS Help Desk locations, or direct electronic mail to consult@rpi.edu.