Parameter

Values

Description

AMLS

<YES, NO>

Default = NO

This parameter is used to invoke the external AMLS eigenvalue solver. This solver is faster than the Lanczos solver for large eigenvalue problems. Note that AMLS must be installed on the system and the environment variable AMLS_EXE must point to the AMLS executable for this setting to work.

If YES, the external AMLS eigenvalue solver is used.

If NO, the internal Lanczos eigenvlaue solver is used.

Refer to AMLS (Automatic Multi-Level Sub-structuring) Eigensolver in the User’s Guide for more details.