A divide-and-conquer method of solving tridiagonal systems on hypercube massively parallel computers

The authors present a new parallel algorithm, based on the divide-and-conquer (DC) strategy, for solving tridiagonal systems. Through a comparative study between their DC method and other well known tridiagonal solvers: cyclic odd-even reduction (CR), recursive doubling (RD), and the partition method, they show that for the binary hypercube architecture, the communication complexity of their DC method is the lowest among all, and therefore the most efficient tridiagonal solver for communication-expensive massively parallel hypercube computers.<<ETX>>