On Sparse Solvers in a Stiff Integrator of Extrapolation Type |
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| Authors: | DUFF, IAIN S. NOWAK, ULRICH |
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| Affiliation: | Computer Science and Systems Division, Harwell Laboratory Didcot, Oxon OX11ORA, U.K.
Konrad-Zuse-Zentrum f?r Informationstechnik Berlin Heilbronner Strasse 10, D-1000 Berlin 31 |
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| Abstract: | We consider the use of software for the direct solution of sparselinear equations within a stiff integration package which usesextrapolation techniques. We discuss the effect of varying thefrequency of matrix decompositions and of altering the pivotingstrategy. We compare the use of two sparse matrix packages,NSPFAC (Sherman, 1978) and MA28 (Duff, 1977), within the chemicalkinetics package LARKIN (Deuflhard et al., 1983). |
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