PAPI_flops(3) PAPI PAPI_flops(3)NAMEPAPI_flops-
Simplified call to get Mflops/s (floating point operation rate), real
and processor time.
SYNOPSISDetailed Description
C Interface:
#include <papi.h>
int PAPI_flops( float *rtime, float *ptime, long long *flpops,
float *mflops );
Parameters:
*rtime total realtime since the first call
*ptime total process time since the first call
*flpops total floating point operations since the first call
*mflops incremental (Mega) floating point operations per seconds
since the last call
Return values:
PAPI_EINVAL The counters were already started by something other
than PAPI_flops().
PAPI_ENOEVNT The floating point operations event does not exist.
PAPI_ENOMEM Insufficient memory to complete the operation.
The first call to PAPI_flops() will initialize the PAPI High Level
interface, set up the counters to monitor the PAPI_FP_OPS event and
start the counters.
Subsequent calls will read the counters and return total real time,
total process time, total floating point operations since the start of
the measurement and the Mflop/s rate since latest call to PAPI_flops().
A call to PAPI_stop_counters() will stop the counters from running and
then calls such as PAPI_start_counters() or other rate calls can safely
be used.
PAPI_flops returns information related to theoretical floating point
operations rather than simple instructions. It uses the PAPI_FP_OPS
event which attempts to 'correctly' account for, e.g., FMA undercounts
and FP Store overcounts, etc.
See Also:
PAPI_flips()PAPI_ipc()PAPI_epc()PAPI_stop_counters()Author
Generated automatically by Doxygen for PAPI from the source code.
Version 5.2.0.0 Mon Oct 28 2013 PAPI_flops(3)
