Coalition structure generation problems : optimization and parallelization of the IDP algorithm in multicore systems
Cruz Mencía, Francisco (Institut d'Investigació en Intel·ligència Artificial (IIIA-CSIC))
Cerquides Bueno, Jesus (Institut d'Investigació en Intel·ligència Artificial (IIIA-CSIC))
Rodríguez-Aguilar, Juan A. (Juan Antonio) (Institut d'Investigació en Intel·ligència Artificial (IIIA-CSIC))
Espinosa, Antonio (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius)
Moure, Juan C (Universitat Autònoma de Barcelona. Departament d'Arquitectura de Computadors i Sistemes Operatius)
Ramchurn, Sarvapali D. (University of Southampton)
Svensson, Kim (University of Southampton)

Date:	2017
Abstract:	The coalition structure generation problem is well known in the area of multi-agent systems. Its goal is to establish coalitions between agents while maximizing the global welfare. Among the existing different algorithms designed to solve the coalition structure generation problem, DP and IDP are the ones with smaller temporal complexity. After analyzing the operation of the dynamic programming and improved dynamic programming algorithms, we have identified which are the most frequent operations and propose an optimized method. In addition, we study and implement a method for dividing the work into different threads. To describe incremental improvements of the algorithm design, we first compare performance of an improved single central processing unit core version where we obtain speedups ranging from 7 × to 11 × . Then, we describe the best resource use in a multi-thread optimized version where we obtain an additional 7. 5 × speedup running in a 12-core machine.
Grants:	Ministerio de Ciencia e Innovación TIN2014-53234-C2-1-R Ministerio de Ciencia e Innovación TIN2015-66863-C2-1-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-576 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-118
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Dynamic programming ; Multi agent systems ; Multi-core systems ; Set partitioning problem
Published in:	Concurrency and Computation : Practice and Experience, Vol. 29, Issue 5 (March 2017) , art. e3969, ISSN 1532-0626

DOI: 10.1002/cpe.3969

Postprint 21 p, 1.3 MB

The record appears in these collections:
Articles > Research articles
Articles > Published articles