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International Journal of Reconfigurable Computing
Volume 2009 (2009), Article ID 639249, 15 pages
Research Article

Reaction Diffusion and Chemotaxis for Decentralized Gathering on FPGAs

1LORIA/University Nancy 1, Cortex Group, Campus Scientifique, Vandoeuvre-les-Nancy, France
2Cinvestav Tamaulipas, Information Technology Laboratory, Victoria, Mexico
3INRIA Nancy Grand Est, Maia group, Villers-les-Nancy, France

Received 15 March 2009; Accepted 16 November 2009

Academic Editor: Lionel Torres

Copyright © 2009 Bernard Girau et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We consider here the feasibility of gathering multiple computational resources by means of decentralized and simple local rules. We study such decentralized gathering by means of a stochastic model inspired from biology: the aggregation of the Dictyostelium discoideum cellular slime mold. The environment transmits information according to a reaction-diffusion mechanism and the agents move by following excitation fronts. Despite its simplicity this model exhibits interesting properties of self-organization and robustness to obstacles. We first describe the FPGA implementation of the environment alone, to perform large scale and rapid simulations of the complex dynamics of this reaction-diffusion model. Then we describe the FPGA implementation of the environment together with the agents, to study the major challenges that must be solved when designing a fast embedded implementation of the decentralized gathering model. We analyze the results according to the different goals of these hardware implementations.