NAME

PAPI_get_real_cyc, PAPI_get_real_usec - get real time counter values

CONTENTS

Synopsis
Description
Errors
Example
Author
Bugs
See Also

C Interface

#include <papi.h> 

long_long PAPI_get_real_cyc(void); 

long_long PAPI_get_real_usec(void); 

Fortran Interface

#include fpapi.h 

PAPIF_get_real_usec(C_LONG_LONG time) 

PAPIF_get_real_cyc(C_LONG_LONG real_cyc) 

Both of these functions return the total real time passed since some arbitrary starting point. The time is returned in clock cycles or microseconds respectively. These calls are equivalent to wall clock time.

These functions always succeed.

long_long s, e;
        
if (PAPI_library_init(PAPI_VER_CURRENT) != PAPI_VER_CURRENT)
  exit(1);

s = PAPI_get_real_cyc();

your_slow_code();

e = PAPI_get_real_cyc();
printf("Wallclock cycles: %lld\n",e-s);

The PAPI Team. See them at the PAPI Web Site: http://icl.cs.utk.edu/projects/papi

These functions have no known bugs.

PAPI_library_init (3), PAPI_get_virt_usec (3), PAPI_get_virt_cyc (3)