PAPI 7.1.0.0
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PAPI_set_cmp_granularity Class Reference

Set the default counting granularity for eventsets bound to the specified component. More...

Detailed Description

C Prototype:
#include <papi.h>
int PAPI_set_cmp_granularity( int granularity, int cidx );
Parameters
granularityone of the following constants as defined in the papi.h header file
  • PAPI_GRN_THR Count each individual thread
  • PAPI_GRN_PROC Count each individual process
  • PAPI_GRN_PROCG Count each individual process group
  • PAPI_GRN_SYS Count the current CPU
  • PAPI_GRN_SYS_CPU Count all CPUs individually
  • PAPI_GRN_MIN The finest available granularity
  • PAPI_GRN_MAX The coarsest available granularity
cidxAn integer identifier for a component. By convention, component 0 is always the cpu component.
Return values
PAPI_OK
PAPI_EINVALOne or more of the arguments is invalid.
PAPI_ENOCMPThe argument cidx is not a valid component.

PAPI_set_cmp_granularity 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.

To change the granularity of an existing event set, please see PAPI_set_opt. The reader should note that the granularity of an event set affects only the mode in which the counter continues to run.

Example:
int ret;
// Initialize the library
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
if (ret != PAPI_OK) handle_error(ret);
if (ret != PAPI_OK) handle_error(ret);
Create a new empty PAPI EventSet.
initialize the PAPI library.
Set the default counting granularity for eventsets bound to the specified component.
#define PAPI_VER_CURRENT
Definition: f90papi.h:54
#define PAPI_OK
Definition: f90papi.h:73
#define PAPI_GRN_PROC
Definition: f90papi.h:266
static int EventSet
Definition: init_fini.c:8
FILE * stderr
See also
PAPI_set_granularity PAPI_set_domain PAPI_set_opt PAPI_get_opt

The documentation for this class was generated from the following file: