Posted by Terry J. Hilsabeck on August 02, 1998 at 01:37:14:

In Reply to: diagonalizing large sparse matrices posted by Nigel Badnell on November 28, 1997 at 11:11:39:

Try dgeev for real matrices and zgeev for complex.

: I have large block tri-diagonal matrices that I want

: all the e-values and e-vectors from, real symmetric

: initially, but complex symmetric in general. Lanczos

: methods are generally the way to go for large sparse

: matrices but block tridiagonal should make things

: easier.....does anyone have any suggestions, pointers

: to codes? (The blocks themselve are non-sparse but

: are readily diagonalizable.)