GRESS (Gradient Enhanced Software System) Version 0. 0 user's manual

Technical Report · Sat Oct 01 00:00:00 EDT 1988

DOI:https://doi.org/10.2172/6683420· OSTI ID:6683420

Horwedel, J. E.; Worley, B. A.; Oblow, E. M.; Pin, F. G.; Wright, R. Q.

The primary objective of this manual is to provide a description of the Gradient Enhanced Software System (GRESS) and to explain how to use GRESS to enhance FORTRAN 77 models for gradient calculation. The use of the Extended Arithmetic Processor (EXAP) as the precompiler for GRESS is presented. A complete description of how to enhance a source code for forward propagation of derivatives using the calculus chain rule is provided. On option, EXAP can be used to generate derivatives and store them on a direct access device for subsequent solution of the numerical adjoint equations. Programming information is also provided to aid in the installation and maintenance of the software.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6683420
• Report Number(s): ORNL/TM-10835; ON: DE89004308
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
SENSITIVITY ANALYSIS
MATHEMATICAL MODELS
DOCUMENTATION
G CODES
MANUALS
RADIOACTIVE WASTE MANAGEMENT
COMPUTER CODES
DOCUMENT TYPES
MANAGEMENT
MATERIALS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage
053000 - Nuclear Fuels- Environmental Aspects
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)