An experimental study of methods for parallel preconditioned Krylov methods
Douglas J. Baxter, Joel Haskin Saltz, Martin H. Schultz, Stanley C. Eisenstat, Kathleen Crowley · 1988
High performance multiprocessor architectures differ both in the number of processors, and in the delay costs for synchronization and communication. In order to obtain good performance on a given architecture for a given problem, adequate parallelization, good balance of load and an appropriate choice of granularity are essential.