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.TH "PAPI_flops_rate" 3 "Wed Jun 25 2025 19:30:48" "Version 7.2.0.0" "PAPI" \" -*- nroff -*-
.ad l
.nh
.SH NAME
PAPI_flops_rate \- Simplified call to get Mflops/s (floating point operation rate), real and processor time\&.
.SH SYNOPSIS
.br
.PP
.SH "Detailed Description"
.PP
.PP
\fBC Interface: \fP
.RS 4
#include <\fBpapi\&.h\fP>
.br
int \fBPAPI_flops_rate\fP ( int event, float *rtime, float *ptime, long long *flpops, float *mflops );
.RE
.PP
\fBParameters\fP
.RS 4
\fIevent\fP one of the three presets PAPI_FP_OPS, PAPI_SP_OPS or PAPI_DP_OPS
.br
\fI*rtime\fP realtime since the latest call
.br
\fI*ptime\fP process time since the latest call
.br
\fI*flpops\fP floating point operations since the latest call
.br
\fI*mflops\fP incremental (Mega) floating point operations per seconds since the latest call
.RE
.PP
\fBReturn values\fP
.RS 4
\fIPAPI_EINVAL\fP The counters were already started by something other than PAPI_flops_rate()\&.
.br
\fIPAPI_ENOEVNT\fP The floating point operations event does not exist\&.
.br
\fIPAPI_ENOMEM\fP Insufficient memory to complete the operation\&.
.RE
.PP
The first call to PAPI_flops_rate() will initialize the PAPI interface, set up the counters to monitor the floating point operations event and start the counters\&.
.PP
Subsequent calls will read the counters and return real time, process time, floating point operations and the Mflop/s rate since the latest call to PAPI_flops_rate()\&.
.PP
PAPI_flops_rate() returns information related to theoretical floating point operations rather than simple instructions\&. It uses the floating point operations event which attempts to 'correctly' account for, e\&.g\&., FMA undercounts and FP Store overcounts\&. Note that PAPI_flops_rate() is thread-safe and can therefore be called by multiple threads\&.
.PP
\fBSee also\fP
.RS 4
PAPI_flips_rate()
.PP
PAPI_ipc()
.PP
PAPI_epc()
.PP
PAPI_rate_stop()
.RE
.PP
.SH "Author"
.PP
Generated automatically by Doxygen for PAPI from the source code\&.
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