is awarded the
for the furtherance of scientific computing
as appreciation of his work
AMC: An automatic differentiation tool for Fortran-programs
The Heinz-Billing award 1995 is given for the development of a compiler. The Adjoint Model Compiler is an algorithm to construct a Fortran program to compute the derivatives of a function out of a given Fortran program to compute a function. Derivatives are important for analysing and valuating non-linear models especially for the optimization and sensitivity analysis of model parameters. The AMC as a specialized and efficient tool of automatic differentiation has already been applied to large and complex models in climate research worldwide. The AMC contributes to the valuation of non-linear models by reducing the time substantially and increasing the reliability. We expect that AMC will become a common tool for model-simulation. Beyond is intended function, AMC is a hint that the combination of numerical and symbolic methods of programming is very important for scientific computing in the future.