SVDMonitorFirst#

Print the first unconverged approximate value and error estimate at each iteration of the singular value solver.

Synopsis#

#include "slepcsvd.h" 
PetscErrorCode SVDMonitorFirst(SVD svd,PetscInt its,PetscInt nconv,PetscReal sigma[],PetscReal errest[],PetscInt nest,PetscViewerAndFormat *vf)

Collective

Input Parameters#

  • svd - the singular value solver context

  • its - iteration number

  • nconv - number of converged singular triplets so far

  • sigma - singular values

  • errest - error estimates

  • nest - number of error estimates to display

  • vf - viewer and format for monitoring

Options Database Key#

Note#

This is not called directly by users, rather one calls SVDMonitorSet(), with this function as an argument, to cause the monitor to be used during the SVD solve.

See Also#

SVD: Singular Value Decomposition, SVDMonitorSet(), SVDMonitorAll(), SVDMonitorConditioning(), SVDMonitorConverged()

Level#

intermediate

Location#

src/svd/interface/svdmon.c

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