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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 matrix_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), spmvtest1(1), spmvtest2(1), spmvtest2b(1), spmvtest3(1), spmvtest3b(1), spmvtest4(1), spmvtest5(1)http://www.ssisc.org/lis/
http://math.nist.gov/MatrixMarket/
| 4 Nov 2017 | Man Page |
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