CSKYDG2:An Out-of-Core Choleksy Algorithm Equation Solver (With Respect to Profile) for Large Positive Definite Systems of Linear Equations,

摘要

In the finite element approach to static structural analysis the solution of the equation KU = P is basic. However, the order of K is often so large that, even when the symmetry and banded structure of K are taken into account the storage of K in the core memory of a computer may not be feasible or even possible. To handle such a case, the computer program CSKYDG2 has been developed. CSKYDG2 is an out-of-core Cholesky algorithm solver for positive definite systems of simultaneous linear equations. CSKYDG2, which takes the profile approach, uses SETUP, a preprocessor program which stores the profile of the upper triangular half of the matrix K in random access files. CSKYDG2 and SETUP are written in FORTRAN Extended for the CDC 6000 series of computers.