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gesolver(1) Utility Commands gesolver(1) NAME gesolve - eigensolver for generalized eigenvalue problems (Ritz values only) SYNOPSIS gesolve matrix_a_filename matrix_b_filename evalues_filename [options] DESCRIPTION This program inputs the matrix data from matrix_a_filename ma- trix_b_filename, and solves the generalized eigenvalue problem A*x = l*B*x with the solver specified by options. It outputs the specified number of Ritz values, the number of which is given by option -ss, to evalues_filename in the extended Matrix Market format (see Appendix of Lis User Guide). Both the Matrix Market format and the Harwell-Boeing format are supported for the matrix filenames. OPTIONS The following options are supported: -e eigensolver The following options are supported for eigensolver: -e {gli|15} Generalized Lanczos -ss [1] The size of the subspace -e {gai|16} Generalized Arnoldi -ss [1] The size of the subspace Other Options for eigensolver: -eprint [0] The output of the residual history -eprint {none|0} None -eprint {mem|1} Save the residual history -eprint {out|2} Output it to the standard output -eprint {all|3} Save the residual history and output it to the standard output -omp_num_threads [t] The number of the threads (t represents the maximum number of the threads) -estorage [0] The matrix storage format -estorage_block [2] The block size of the BSR and BSC formats -ef [0] The precision of the eigensolver -ef {double|0} Double precision -ef {quad|1} Double-double (quadruple) precision See Lis User Guide for full description. EXIT STATUS The following exit values are returned: 0 The process is normally terminated unspecified An error occurred SEE ALSO lis(3), lsolve(1), gesolve(1), hpcg_kernel(1), hpcg_spmvtest(1), sp- mvtest1(1), spmvtest2(1), spmvtest2b(1), spmvtest3(1), spmvtest3b(1), spmvtest4(1), spmvtest5(1) http://www.ssisc.org/lis/ http://math.nist.gov/MatrixMarket/ Man Page 4 Nov 2017 gesolver(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | SEE ALSO
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