Chisato Konno

Interactive/visual DEQSOL: interactive creation, debugging, diagnosis and visualization of numerical simulation

DEQSOL is a very high level language specially designed to describe PDE problems in a way quite natural for numerical analyses. The DEQSOL translator automatically generates highly vectorizable FORTRAN simulation codes from the mathematical-level DEQSOL descriptions. DEQSOL requires only one tenth source lines of code by FORTRAN to describe simulation program and reduces the time needed to implement a simulation procedure to less than one sixth that of FORTRAN. DEQSOL possesses both finite difference method (FDM) and finite element method (FEM) as discretization facilities and its functional enhancement has been continued for years. DEQSOL has been becoming a considerably powerful system for numerical analysis specialists. However, the present DEQSOL is a batch-type language system and there is still something to brush up DEQSOL to be a more intelligent PSE (Problem Solving Environment) for PDE problems. Through the study of applying the present DEQSOL to practical problems, the time consuming process and its problems are analyzed and the future DEQSOL system is proposed. That is the interactive⧸visual DEQSOL which consists of eight subsystems, where the present DEQSOL acts just as the code generator subsystem. From our evaluation, the new DEQSOL will be able to shorten the above-mentioned simulation procedure time by one more order of magnitude of the present DEQSOL, and make the system will become a more user-oriented PSE as well.