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esolver(1) Utility Commands esolver(1) NAME esolver - eigensolver for standard eigenvalue problems (Ritz values only) SYNOPSIS esolver matrix_filename evalues_filename [options] DESCRIPTION This program inputs the matrix data from matrix_filename and solves the standard eigenvalue problem A*x = l*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 for- mat (see Appendix of Lis User Guide). Both the Matrix Market format and the Harwell-Boeing format are supported for the matrix filename. OPTIONS The following options are supported: -e eigensolver The following options are supported for eigensolver: -e {li|7} Lanczos -ss [1]The size of the subspace -e {ai|8} 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 out- put -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), esolve(1), hpcg_kernel(1), hpcg_spmvtest(1), sp- mvtest1(1), spmvtest2(1), spmvtest2b(1), spmvtest3(1), spmvtest3b(1), sp- mvtest4(1), spmvtest5(1) http://www.ssisc.org/lis/ http://math.nist.gov/MatrixMarket/ Man Page 4 Nov 2017 esolver(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | SEE ALSO
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