Modeling the flow inside multiaquifer systems can be efficiently performed by the so-called quasi-3D methods. Integrating the model equations by the finite element method leads to block-tridiagonal systems. Efficiently solving these systems is an important task for performing simulations on large, realistic multiaquifers. In this paper, three higly parallel iterative procedure are used. The degree of parallelization attainable by these methods is evaluated on two massively parallel computers a Cray T3D and T3E. The speed-ups obtained when computing the flow inside a realistic multiaquifer are analyzed and compared. Both a coarse and a finer finite element mesh were used to compare the ability of the T3D and T3E machines in handling problems with different grain size. The higher efficiency of the T3E over T3D is also measured.

Iterative solution of block tridiagonal systems on the CRAY T3D and T3E supercomputers

PINI, GIORGIO;SARTORETTO, FLAVIO
1997

Abstract

Modeling the flow inside multiaquifer systems can be efficiently performed by the so-called quasi-3D methods. Integrating the model equations by the finite element method leads to block-tridiagonal systems. Efficiently solving these systems is an important task for performing simulations on large, realistic multiaquifers. In this paper, three higly parallel iterative procedure are used. The degree of parallelization attainable by these methods is evaluated on two massively parallel computers a Cray T3D and T3E. The speed-ups obtained when computing the flow inside a realistic multiaquifer are analyzed and compared. Both a coarse and a finer finite element mesh were used to compare the ability of the T3D and T3E machines in handling problems with different grain size. The higher efficiency of the T3E over T3D is also measured.
1997
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/106884
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