table of contents
| PAPI_set_granularity(3) | PAPI | PAPI_set_granularity(3) |
NAME¶
PAPI_set_granularity - Set the default counting granularity for eventsets bound to the cpu component.
SYNOPSIS¶
Detailed Description¶
C Prototype:
#include <papi.h>
int PAPI_set_granularity( int granularity );
int PAPI_set_granularity( int granularity );
Parameters
– granularity one 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
Return values
PAPI_OK
PAPI_EINVAL One or more of the arguments is invalid.
PAPI_EINVAL One or more of the arguments is invalid.
PAPI_set_granularity sets the default counting granularity for all new event sets created by PAPI_create_eventset. This call implicitly sets the granularity for the cpu component (component 0) and is included to preserve backward compatibility.
Example:
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!0);
exit(1);
}
if (ret < 0) handle_error(ret);
// Set the default granularity for the cpu component
ret = PAPI_set_granularity(PAPI_GRN_PROC);
if (ret != PAPI_OK) handle_error(ret);
ret = PAPI_create_eventset(&EventSet);
if (ret != PAPI_OK) handle_error(ret);
See also
PAPI_set_cmp_granularity PAPI_set_domain
PAPI_set_opt PAPI_get_opt
Author¶
Generated automatically by Doxygen for PAPI from the source code.
| Fri Nov 17 2023 | Version 6.0.0.0 |