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U.S. Department of Energy
Office of Scientific and Technical Information

GEARV and GEARST: vectorized ordinary differential equation solvers for the 7600 and STAR computers

Technical Report ·
OSTI ID:5164817

GEARV and GEARST are packages of subroutines for the numerical solution of systems of ordinary differential equations, given the initial values. Both are vectorized versions of the GEAR package (UCID-30001, Rev. 3), and are good for both stiff and nonstiff systems. Each package contains both the implicit Adams methods and the backward differentiation formulas, or the method of C. W. Gear, as options. GEARV is written for the CDC 7600 computer, with the use of STACKLIB and vector language features of the CHAT compiler at LLL. GEARST is written for the CDC STAR-100 computer, with the FENIX compiler.

Research Organization:
California Univ., Livermore (USA). Lawrence Livermore Lab.
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
5164817
Report Number(s):
UCID-30119(Rev.1)
Country of Publication:
United States
Language:
English