A program for accurate solutions of two-electron atoms

Unusual features of the program: The implicitly restarted Arnoldi method used to obtain the eigenvalues is implemented by using the ARPACK/PARPACK program library [http://www.netlib.org/arpack]. This package also depends on the standard numerical libraries BLAS and LAPACK [http://www.netlib.org/lapack]. Good performance is obtained by using Sun's optimized performance libraries [http://www.sun.com]. By using a 64-bit environment (Ultra SPARC III and Solaris 9), memory limitations are non-problematic. Shared memory is used in the parallel version. Fast communication between the nodes is made over shared memory using Sun's implementation of MPI.