Title :
Parallel dynamic programming on clusters of workstations
Author :
Canto, Sebastián Dormido ; De Madrid, Ángel P. ; Bencomo, Sebastián Dormido
Author_Institution :
Dept. of Comput. Sci. & Autom. Control, UNED, Madrid, Spain
Abstract :
The standard DP (dynamic programming) algorithms are limited by the substantial computational demands they put on contemporary serial computers. In this work, the theory behind the solution to serial monadic dynamic programming problems highlights the theory and application of parallel dynamic programming on a general-purpose architecture (cluster or network of workstations). A simple and well-known technique, message passing, is considered. Several parallel serial monadic DP algorithms are proposed, based on the parallelization in the state variables and the parallelization in the decision variables. Algorithms with no interpolation are also proposed. It is demonstrated how constraints introduce load unbalance which affect scalability and how this problem is inherent to DP.
Keywords :
dynamic programming; message passing; parallel programming; workstation clusters; NOW; combinatorial algorithm; constrained optimization; load unbalance; message passing; network of workstation; parallel dynamic programming; performance evaluation; serial monadic dynamic programming; workstation clusters; Application software; Clustering algorithms; Computational efficiency; Computer architecture; Concurrent computing; Dynamic programming; Heuristic algorithms; Message passing; Scalability; Workstations; NOWs.; Parallel dynamic programming; combinatorial algorithms; constrained optimization; networked workstations; performance evaluation;
Journal_Title :
Parallel and Distributed Systems, IEEE Transactions on
DOI :
10.1109/TPDS.2005.112