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Understanding the efficiency of parallel incomplete Cholesky preconditioners on the performance of ICCG solvers for multi-core and GPU systems

H. Moghnieh, D.A. Lowther
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
14th Biennial IEEE Conference on Electromagnetic Field Computation (CEFC), 2010

@inproceedings{moghnieh2010understanding,

   title={Understanding the efficiency of parallel incomplete Cholesky preconditioners on the performance of ICCG solvers for multi-core and GPU systems},

   author={Moghnieh, H. and Lowther, D.A.},

   booktitle={Electromagnetic Field Computation (CEFC), 2010 14th Biennial IEEE Conference on},

   pages={1–1},

   organization={IEEE},

   year={2010}

}

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This paper aims at understanding the effect of parallelizing incomplete Cholesky (IC) factorization on the overall performance of the incomplete Cholesky conjugate gradient (ICCG) solver method, optimized on multi-core and GPU based Systems. Parallel IC preconditioners, which are based on graph reordering and arbitrary levels of allowed fill-in, are tested on structured and unstructured matrices to study the tradeoffs between the level of fill-in, degree of IC parallelism and convergence rate of the ICCG solver.
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