A Parallel Algorithm for the Two-Dimensional Cutting Stock Problem
نویسندگان
چکیده
Cutting Stock Problems (CSP) arise in many production industries where large stock sheets must be cut into smaller pieces. We present a parallel algorithm based on Viswanathan and Bagchi algorithm (VB) solving the Two-Dimensional Cutting Stock Problem (2DCSP). The algorithm guarantees the processing of best nodes first and does not introduce any redundant combinations others than the already present in the sequential version. The improvement is orthogonal to any other sequential improvements. Computational results of an OpenMP implementation confirm the optimality of the algorithm. We also produce a new syntactic based reformulation of the 2DCSP problem which leads to a concise representation of the solutions. A highly efficient data structure to store subproblems is introduced.
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