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.TH "PAPI_set_opt" 3 "Mon Dec 18 2017" "Version 5.6.0.0" "PAPI" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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PAPI_set_opt \-
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.PP
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Set PAPI library or event set options\&.
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.SH SYNOPSIS
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.br
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.PP
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.SH "Detailed Description"
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.PP
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.PP
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\fBC Interface:\fP
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.RS 4
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#include <\fBpapi\&.h\fP>
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.br
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int \fBPAPI_set_opt( int option, PAPI_option_t * ptr )\fP;
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.RE
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.PP
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\fBParameters:\fP
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.RS 4
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\fIoption\fP Defines the option to be set\&. Possible values are briefly described in the table below\&.
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.br
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\fIptr\fP Pointer to a structure determined by the selected option\&. See \fBPAPI_option_t\fP for a description of possible structures\&.
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.RE
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.PP
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\fBReturn values:\fP
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.RS 4
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\fIPAPI_OK\fP
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.br
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\fIPAPI_EINVAL\fP The specified option or parameter is invalid\&.
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.br
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\fIPAPI_ENOEVST\fP The EventSet specified does not exist\&.
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.br
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\fIPAPI_EISRUN\fP The EventSet is currently counting events\&.
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.br
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\fIPAPI_ECMP\fP The option is not implemented for the current component\&.
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.br
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\fIPAPI_ENOINIT\fP PAPI has not been initialized\&.
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.br
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\fIPAPI_EINVAL_DOM\fP Invalid domain has been requested\&.
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.RE
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.PP
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\fBPAPI_set_opt()\fP changes the options of the PAPI library or a specific EventSet created by \fBPAPI_create_eventset\fP\&. 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 \fBPAPI_assign_eventset_component\fP\&.
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.PP
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Ptr is a pointer to the \fBPAPI_option_t\fP 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\&.
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.PP
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\fBNote:\fP
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.RS 4
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Some options, such as PAPI_DOMAIN and PAPI_MULTIPLEX are also available as separate entry points in both C and Fortran\&.
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.RE
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.PP
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The reader is encouraged to peruse the ctests code in the PAPI distribution for examples of usage of \fBPAPI_set_opt\fP\&.
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.PP
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\fBPossible values for the PAPI_set_opt option parameter\fP
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.RS 4
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OPTION DEFINITION
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PAPI_DEFDOM Set default counting domain for newly created event sets. Requires a
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component index.
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PAPI_DEFGRN Set default counting granularity. Requires a component index.
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PAPI_DEBUG Set the PAPI debug state and the debug handler. The debug state is
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specified in ptr->debug.level. The debug handler is specified in
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ptr->debug.handler. For further information regarding debug states and
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the behavior of the handler, see PAPI_set_debug.
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PAPI_MULTIPLEX Enable specified EventSet for multiplexing.
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PAPI_DEF_ITIMER Set the type of itimer used in software multiplexing, overflowing
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and profiling.
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PAPI_DEF_MPX_NS Set the sampling time slice in nanoseconds for multiplexing and overflow.
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PAPI_DEF_ITIMER_NS See PAPI_DEF_MPX_NS.
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PAPI_ATTACH Attach EventSet specified in ptr->attach.eventset to thread or process id
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specified in in ptr->attach.tid.
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PAPI_CPU_ATTACH Attach EventSet specified in ptr->cpu.eventset to cpu specified in in
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ptr->cpu.cpu_num.
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PAPI_DETACH Detach EventSet specified in ptr->attach.eventset from any thread
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or process id.
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PAPI_DOMAIN Set domain for EventSet specified in ptr->domain.eventset.
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Will error if eventset is not bound to a component.
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PAPI_GRANUL Set granularity for EventSet specified in ptr->granularity.eventset.
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Will error if eventset is not bound to a component.
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PAPI_INHERIT Enable or disable inheritance for specified EventSet.
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PAPI_DATA_ADDRESS Set data address range to restrict event counting for EventSet specified
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in ptr->addr.eventset. Starting and ending addresses are specified in
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ptr->addr.start and ptr->addr.end, respectively. If exact addresses
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cannot be instantiated, offsets are returned in ptr->addr.start_off and
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ptr->addr.end_off. Currently implemented on Itanium only.
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PAPI_INSTR_ADDRESS Set instruction address range as described above. Itanium only.
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.RE
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.PP
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\fBSee Also:\fP
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.RS 4
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\fBPAPI_set_debug\fP
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.PP
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\fBPAPI_set_multiplex\fP
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.PP
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\fBPAPI_set_domain\fP
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.PP
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\fBPAPI_option_t\fP
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.RE
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.PP
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.SH "Author"
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.PP
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Generated automatically by Doxygen for PAPI from the source code\&.
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