slepc-3.7.3 2016-09-29
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# EPSSetTrackAll

Specifies if the solver must compute the residual norm of all approximate eigenpairs or not.

### Synopsis

    #include "slepceps.h"
    PetscErrorCode EPSSetTrackAll(EPS eps,PetscBool trackall)

Logically Collective on EPS

### Input Parameters

| eps | - the eigensolver context
| trackall | - whether to compute all residuals or not

### Notes

If the user sets trackall=PETSC_TRUE then the solver computes (or estimates) the residual norm for each eigenpair approximation. Computing the residual is usually an expensive operation and solvers commonly compute only the residual associated to the first unconverged eigenpair.

The options '-eps_monitor_all' and '-eps_monitor_lg_all' automatically activate this option.

### See Also

EPSGetTrackAll()

Location: src/eps/interface/epsopts.c
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages