Multitasking the Householder Diagonalization Algorithm on the CRAY X-MP/48

摘要: In a previous lecture (computational implementation of the R—matrix method in atomic and molecular collision problems) it was mentioned that an important part computation solving problems by techniques diagonalization internal-region Hamiltonian matrices. These matrices are usually real, symmetric dense (ii.e. non—sparse). All eigenvalues eigenvectors required to define R—matrix. can be various sizes, up order few thousand square.