Efficient Parallel Solution of a Semiconductor Laser Array Dynamics Model
نویسندگان
چکیده
Communication overhead on parallel applications is usually the most important handicap to reach a perfect speedup. The reduction of both the number and the size of messages has been the common direction of both programmers and parallelizing compilers. However, the appearance of new parallel computers allowing for the overlap of computations and communications has opened new ways to do research. In this work, a parallel algorithm for solving a system of time-dependent partial differential equations using the Hopscotch method is proposed. This method reduces by half the number of messages and, by means of communications overlapping, allows to achieve a near-to-perfect speedup in our computations. The algorithm has been tested with a system of time-dependent, two-dimensional partial differential equations which model the dynamic behavior of a multistripe index-guided semiconductor laser array. Computations were performed on a Transtech PARAMID computer with 16 nodes.
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