PAPI_flips - PAPI High level: Simplified call to get Mflips/s, real and processor time
  PAPI_flops - PAPI High level: Simplified call to get Mflops/s, real and processor time

CONTENTS

Synopsis
Description
Arguments
Return Values
Notes
Authors
Bugs
See Also

C Interface

#include <papi.h> 

int PAPI_flips (float *rtime, float *ptime, long_long *flpins, float *mflips); 

int PAPI_flops (float *rtime, float *ptime, long_long *flpops, float *mflops); 

Fortran Interface

#include fpapi.h 

PAPIF_flips(C_FLOAT real_time, C_FLOAT proc_time, C_LONG_LONG flpins, C_FLOAT mflips, C_INT check) 

PAPIF_flops(C_FLOAT real_time, C_FLOAT proc_time, C_LONG_LONG flpops, C_FLOAT mflops, C_INT check) 

The first call to PAPI_flips() or PAPI_flops() will initialize the PAPI High Level interface, set up the counters to monitor PAPI_FP_INS or PAPI_FP_OPS and PAPI_TOT_CYC events and start the counters. Subsequent calls will read the counters and return total real time, total process time, total floating point instructions or operations since the start of the measurement and the Mflip/s or Mflop/s rate since latest call to PAPI_flops() or PAPI_flops().

*rtime -- total realtime since the first PAPI_flops() call

*ptime -- total process time since the first PAPI_flops() call

*flpins, flpops -- total floating point instructions or operations since the first call

*mflips, *mflops -- Mflip/s or Mflop/s achieved since the previous call

On success, this function returns PAPI_OK.
On error, a non-zero error code is returned.

Mflip/s, or millions of floating point instructions per second, is defined in this context as the number of instructions issued to the floating point unit per second. It is usually calculated directly from a counter measurement and may be different from platform to platform. Mflop/s, or millions of floating point operations per second, is intended to represent the number of floating point arithmetic operations per second. Attempts are made to massage the counter values to produce the theoreticallly expected value by, for instance, doubling FMA counts or subtracting floating point loads and stores if necessary. CAVEAT EMPTOR

PAPI_flops() may be called by: 

         

        the user application program 

         

PAPI_flops() contains calls to: 

         

        PAPI_perror() 

        PAPI_library_init() 

        PAPI_get_hardware_info() 

        PAPI_create_eventset() 

        PAPI_add_event() 

        PAPI_start() 

        PAPI_get_real_usec() 

        PAPI_accum() 

        PAPI_shutdown() 

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

These functions have no known bugs.

PAPI_accum (3) , PAPI_ipc (3)