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THE COMBINATION TECHNIQUE FOR THE SPARSE GRID SOLUTION OF PDE'S ON MULTIPROCESSOR MACHINES
- MICHAEL GRIEBEL
Parallel Processing Letters01 Mar 1992
Preview Abstract
We present a new method for the solution of partial differential equations. In contrast to the usual approach which needs in the 2-D case grid points, our combination technique works with only grid points, where h_n denotes the employed grid size. The accuracy of the obtained solution deteriorates only slightly from to for a sufficiently smooth solution. Additionally, the new method is perfectly suited for parallelization. On a machine with processors we get in practice an overall parallel complexity of only . The method can be generalized to higher dimensions. Then, the gain is expected to be even more dramatic. For the two-dimensional case, we report the results of numerical experiments obtained on a Transputer system and on the CRAY Y-MP.

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