ALPAL, A PROGRAM TO GENERATE PHYSICS SIMULATION CODES FROM NATURAL DESCRIPTIONS

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Abstract
A Livermore Physics Applications Language (ALPAL), a new computer language, is described. ALPAL is a tool that generates a Fortran code module from a natural description of a physics model. This capability gives the computational physicist a significant productivity boost. While ALPAL is a working computer program, significant additions are being made to it. Some of the factors that make ALPAL an important tool are: first, it eliminates many sources of errors; second, it permits building program modules with far greater speed than is otherwise possible; third, it provides a means of specifying many numerical algorithms; and fourth, it is a language that is close to a journal-style presentation of physics models and numerical methods for solving them. In sum, ALPAL is designed to magnify the abilities and creativity of computational physicists.

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