petsc-3.9.4 2018-09-11

PetscOptionsSetFromOptions

Sets options related to the handling of options in PETSc

#include "petscsys.h"   
PetscErrorCode  PetscOptionsSetFromOptions(PetscOptions options)

options -options database, use NULL for default global database

To see all options, run your program with the -help option or consult Users-Manual: Introduction

set, options, database

intermediate

	-options_monitor <optional filename>	- prints the names and values of all runtime options as they are set. The monitor functionality is not available for options set through a file, environment variable, or on the command line. Only options set after PetscInitialize() completes will be monitored.
	-options_monitor_cancel	- cancel all options database monitors