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PAPI_set_opt(3) 			       PAPI				  PAPI_set_opt(3)

       PAPI_set_opt -

       Set PAPI library or event set options.

Detailed Description
       C Interface:
	   #include <papi.h>
	    int PAPI_set_opt(  int option, PAPI_option_t * ptr );

	   option Defines the option to be set. Possible values are briefly described in the
	   table below.
	   ptr Pointer to a structure determined by the selected option. See PAPI_option_t for a
	   description of possible structures.

       Return values:
	   PAPI_EINVAL The specified option or parameter is invalid.
	   PAPI_ENOEVST The EventSet specified does not exist.
	   PAPI_EISRUN The EventSet is currently counting events.
	   PAPI_ECMP The option is not implemented for the current component.
	   PAPI_ENOINIT PAPI has not been initialized.
	   PAPI_EINVAL_DOM Invalid domain has been requested.

       PAPI_set_opt() changes the options of the PAPI library or a specific EventSet created by
       PAPI_create_eventset. Some options may require that the EventSet be bound to a component
       before they can execute successfully. This can be done either by adding an event or by
       explicitly calling PAPI_assign_eventset_component.

       Ptr is a pointer to the PAPI_option_t structure, which is actually a union of different
       structures for different options. Not all options require or return information in these
       structures. Each requires different values to be set. Some options require a component
       index to be provided. These options are handled implicitly through the option structures.

	   Some options, such as PAPI_DOMAIN and PAPI_MULTIPLEX are also available as separate
	   entry points in both C and Fortran.

       The reader is encouraged to peruse the ctests code in the PAPI distribution for examples
       of usage of PAPI_set_opt.

       Possible values for the PAPI_set_opt option parameter

	   OPTION	   DEFINITION PAPI_DEFDOM     Set default counting domain for newly
	   created event sets. Requires a
			   component index.  PAPI_DEFGRN     Set default counting granularity.
	   Requires a component index.	PAPI_DEBUG	Set the PAPI debug state and the debug
	   handler. The debug state is
			   specified in ptr->debug.level. The debug handler is specified in
			   ptr->debug.handler. For further information regarding debug states and
			   the behavior of the handler, see PAPI_set_debug.  PAPI_MULTIPLEX
	   Enable specified EventSet for multiplexing.	PAPI_DEF_ITIMER Set the type of itimer
	   used in software multiplexing, overflowing
			   and profiling.  PAPI_DEF_MPX_NS Set the sampling time slice in
	   nanoseconds for multiplexing and overflow.  PAPI_DEF_ITIMER_NS See PAPI_DEF_MPX_NS.
	   PAPI_ATTACH	   Attach EventSet specified in ptr->attach.eventset to thread or process
			   specified in in ptr->attach.tid.  PAPI_CPU_ATTACH Attach EventSet
	   specified in ptr->cpu.eventset to cpu specified in in
			   ptr->cpu.cpu_num.  PAPI_DETACH     Detach EventSet specified in
	   ptr->attach.eventset from any thread
			   or process id.  PAPI_DOMAIN	   Set domain for EventSet specified in
			   Will error if eventset is not bound to a component.	PAPI_GRANUL
	   Set granularity for EventSet specified in ptr->granularity.eventset.
			   Will error if eventset is not bound to a component.	PAPI_INHERIT
	   Enable or disable inheritance for specified EventSet.  PAPI_DATA_ADDRESS   Set data
	   address range to restrict event counting for EventSet specified
			   in ptr->addr.eventset. Starting and ending addresses are specified in
			   ptr->addr.start and ptr->addr.end, respectively. If exact addresses
			   cannot be instantiated, offsets are returned in ptr->addr.start_off
			   ptr->addr.end_off. Currently implemented on Itanium only.
	   PAPI_INSTR_ADDRESS  Set instruction address range as described above. Itanium only.

       See Also:




       Generated automatically by Doxygen for PAPI from the source code.

Version 			 Tue Jun 17 2014			  PAPI_set_opt(3)

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