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- W2063610976 abstract "This paper considers the parallel solution of finite element equations using the preconditioned conjugate gradient method on shared memory multiprocessors. The preconditioner used is an incomplete LU factorization of the stiffness matrix. We have designed a new method for implementing parallel forward and backward substitutions which requires the L and U factors to have an independent column structure, which we refer to as I2LU. The algorithm has been implemented on an Encore Multimax and parallel efficiencies up to 80% of the maximum possible theoretical value have been obtained using around 6–8 processors. These figures are shown to be comparable with the efficiencies of an implementation of a similar row-oriented approach, based on level scheduling, tested with the same problems." @default.
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- W2063610976 date "1997-06-01" @default.
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- W2063610976 title "Independent columns: A new parallel ILU preconditioner for the PCG method" @default.
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- W2063610976 doi "https://doi.org/10.1016/s0167-8191(97)00026-4" @default.
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