PeIGS parallel eigensolver library

The PeIGS library contains subroutines for solving standard and generalized real symmetric eigensystems. All eigenvalues and eigenvectors can be computed.

PeIGS incorporates scalable

• data structures: compact storage, column distribution with panel-block computation; and
• algorithms including inverse iteration with repeated reorthogonalization.

The library is implemented using message-passing model and is portable across many platforms.

For more information and availability send a message to fanngi@ornl.gov.