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

Gignac,Donald A.

Accession Number:

ADA011039

Title:

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

Descriptive Note:

Corporate Author:

NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s):

Gignac,Donald A.

Report Date:

1975-03-01

Pagination or Media Count:

37.0

Abstract:

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.