NEPSolve#
Solves the nonlinear eigensystem.
Synopsis#
Collective
Input Parameter#
nep - eigensolver context obtained from NEPCreate()
Options Database Keys#
-nep_view - print information about the solver used
-nep_view_matk - view the split form matrix Ak (replace k by an integer from 0 to nt-1)
-nep_view_fnk - view the split form function fk (replace k by an integer from 0 to nt-1)
-nep_view_vectors - view the computed eigenvectors
-nep_view_values - view the computed eigenvalues
-nep_converged_reason - print reason for convergence, and number of iterations
-nep_error_absolute - print absolute errors of each eigenpair
-nep_error_relative - print relative errors of each eigenpair
-nep_error_backward - print backward errors of each eigenpair
Notes#
All the command-line options listed above admit an optional argument specifying the viewer type and options. For instance, use ‘-nep_view_vectors binary:myvecs.bin’ to save the eigenvectors to a binary file, ‘-nep_view_values draw’ to draw the computed eigenvalues graphically, or ‘-nep_error_relative :myerr.m:ascii_matlab’ to save the errors in a file that can be executed in Matlab.
See Also#
NEPCreate(), NEPSetUp(), NEPDestroy(), NEPSetTolerances()
Level#
beginner
Location#
Examples#
src/nep/tutorials/ex42.c
src/nep/tutorials/ex27f.F90
src/nep/tutorials/ex20f.F90
src/nep/tutorials/ex22f.F90
src/nep/tutorials/ex21.c
src/nep/tutorials/ex54f.F90
src/nep/tutorials/ex22.c
src/nep/tutorials/ex27.c
src/nep/tutorials/ex20.c
Implementations#
NEPSolve_CISS() in src/nep/impls/ciss/nciss.c
NEPSolve_Interpol() in src/nep/impls/interpol/interpol.c
NEPSolve_NArnoldi() in src/nep/impls/narnoldi/narnoldi.c
NEPSolve_NLEIGS() in src/nep/impls/nleigs/nleigs.c
NEPSolve_RII() in src/nep/impls/rii/rii.c
NEPSolve_SLP() in src/nep/impls/slp/slp.c
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