Distributed Constraint Solving for Functional Logic Programming

Project Description

Technical Project Leader
Wolfgang Schreiner

RISC-Linz (Bruno Buchberger, Hoon Hong, Wolfgang Schreiner), SCORE (Tetsuo Ida).

Research and Development Goals
We are going to develop a distributed software system consisting of
a functional logic language interpreter on one machine,
a number of constraint solving engines running on other machines.
The interpreter is based on an already existing (sequential) implementation of a functional logic language on the computer system Mathematica extended in two directions:
the possibility to specify (non-linear) constraints over real numbers;
the possibility to specify OR-parallelism among different clauses of a predicate.
The OR parallel features of the interpreter allow the decomposition of the solution space into different subspaces denoted by various sets of constraints; the individual sets are solved by different constraint solving engines in parallel and joined together to form the total solution set. This allows to investigate problems with large solution spaces using the computational power available in large computer networks.

Project Lead

Project Duration

01/07/1997 - 30/06/1999

Project URL

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