Get instructions per cycle, real and processor time. More...

Detailed Description

C Interface:: #include <papi.h>
int PAPI_ipc( float *rtime, float *ptime, long long *ins, float *ipc );

Parameters:

*rtime	total realtime since the first PAPI_flops() call
*ptime	total process time since the first PAPI_flops() call
*ins	total instructions since the first call
*ipc	instructions per cycle achieved since the previous call

Return values:

PAPI_EINVAL	The counters were already started by something other than: PAPI_ipc()
PAPI_ENOEVNT	The total instructions or total cycles event does not exist.
PAPI_ENOMEM	Insufficient memory to complete the operation.

The first call to PAPI_ipc() will initialize the PAPI High Level interface, set up the counters to monitor PAPI_TOT_INS and PAPI_TOT_CYC events and start the counters. Subsequent calls will read the counters and return total real time, total process time, total instructions since the start of the measurement and the instructions per cycle rate since latest call to PAPI_ipc(). A call to PAPI_stop_counters() will stop the counters from running and then calls such as PAPI_start_counters() can safely be used.

See also:: PAPI_flops() PAPI_stop_counters() PAPI_set_opt() PAPI_flips()

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

papi_hl.c