NAME¶

PAPI_get_real_cyc - get real time counter value in clock cycles

PAPI_get_real_usec - get real time counter value in microseconds

SYNOPSIS¶

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)

DESCRIPTION¶

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.

ERRORS¶

These functions always succeed.

EXAMPLE¶

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

BUGS¶

These functions have no known bugs.

SEE ALSO¶

PAPI_library_init(3), PAPI_get_virt_cyc(3), PAPI_get_virt_usec(3), PAPI(3), PAPIF(3)