.TH "PAPI_set_cmp_granularity" 3 "Mon Dec 18 2017" "Version 5.6.0.0" "PAPI" \" -*- nroff -*-
.ad l
.nh
.SH NAME
PAPI_set_cmp_granularity \- 
.PP
Set the default counting granularity for eventsets bound to the specified component\&.  

.SH SYNOPSIS
.br
.PP
.SH "Detailed Description"
.PP 

.PP
.nf
@par C Prototype:
    \#include <papi.h> @n
    int PAPI_set_cmp_granularity( int granularity, int cidx );

@param granularity one of the following constants as defined in the papi.h header file
@arg PAPI_GRN_THR   Count each individual thread
@arg PAPI_GRN_PROC  Count each individual process
@arg PAPI_GRN_PROCG Count each individual process group
@arg PAPI_GRN_SYS   Count the current CPU
@arg PAPI_GRN_SYS_CPU   Count all CPUs individually
@arg PAPI_GRN_MIN   The finest available granularity
@arg PAPI_GRN_MAX   The coarsest available granularity

@param cidx
    An integer identifier for a component. 
    By convention, component 0 is always the cpu component. 

.fi
.PP
  
    
.PP
\fBReturn values:\fP
.RS 4
\fIPAPI_OK\fP 
.br
\fIPAPI_EINVAL\fP One or more of the arguments is invalid\&. 
.br
\fIPAPI_ENOCMP\fP The argument cidx is not a valid component\&.  
    
.RE
.PP
\fBPAPI_set_cmp_granularity\fP sets the default counting granularity for all new event sets, and requires an explicit component argument\&. Event sets that are already in existence are not affected\&.
.PP
To change the granularity of an existing event set, please see \fBPAPI_set_opt\fP\&. The reader should note that the granularity of an event set affects only the mode in which the counter continues to run\&.
.PP
\fBExample:\fP
.RS 4

.PP
.nf
int ret;

// Initialize the library
ret = PAPI_library_init(PAPI_VER_CURRENT);
if (ret > 0 && ret != PAPI_VER_CURRENT) {
  fprintf(stderr,"PAPI library version mismatch!\n");
  exit(1); 
}
if (ret < 0) handle_error(ret);

// Set the default granularity for the cpu component
ret = PAPI_set_cmp_granularity(PAPI_GRN_PROC, 0);
if (ret != PAPI_OK) handle_error(ret);
ret = PAPI_create_eventset(&EventSet);
if (ret != PAPI_OK) handle_error(ret);
 *  

.fi
.PP
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBPAPI_set_granularity\fP \fBPAPI_set_domain\fP \fBPAPI_set_opt\fP \fBPAPI_get_opt\fP 
.RE
.PP


.SH "Author"
.PP 
Generated automatically by Doxygen for PAPI from the source code\&.