slepc-3.7.3 2016-09-29
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# PEPQArnoldiSetRestart

Sets the restart parameter for the Q-Arnoldi method, in particular the proportion of basis vectors that must be kept after restart.

### Synopsis

    #include "slepcpep.h"
    PetscErrorCode PEPQArnoldiSetRestart(PEP pep,PetscReal keep)

Logically Collective on PEP

### Input Parameters

| pep | - the eigenproblem solver context
| keep | - the number of vectors to be kept at restart

### Options Database Key

| -pep_qarnoldi_restart | - Sets the restart parameter

### Notes

Allowed values are in the range [0.1,0.9]. The default is 0.5.

### See Also

PEPQArnoldiGetRestart()

Location: src/pep/impls/krylov/qarnoldi/qarnoldi.c
Index of all PEP routines
Table of Contents for all manual pages
Index of all manual pages