Master-slave Tasking on Heterogeneous Processors

Pierre-François Dutot (1)

1 APACHE - Parallel algorithms and load sharing

In this paper, we consider the problem of scheduling independent identical tasks on heterogeneous processors where communication times and processing times are differ- ent. We assume that communication-computation overlap is possible for every processor, but only allow one send and one receive at a time. We propose an algorithm for chains of processors based on an iterative backward construction of the schedule, which is polynomial in the number of proces- sors and in the number of tasks. The complexity is O(np2 ) where n is the number of tasks and p the number of proces- sors. We prove this algorithm to be optimal with respect to the makespan. We extend this result to a special kind of tree called spider graphs.

Mots clés: Scheduling; Master-Slave Tasking; Algorithm

Domaines: Calcul parallèle, distribué et partagé [cs.DC]

Pierre-François Dutot. Master-slave Tasking on Heterogeneous Processors. International Parallel and Distributed Processing Symposium, Apr 2003, Nice, France. ⟨inria-00001081⟩