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/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@author Mark Gates
*/
#ifndef MAGMA_TIMER_H
#define MAGMA_TIMER_H
#include <stdio.h>
#include "magma_v2.h"
typedef double magma_timer_t;
typedef long long magma_flops_t;
#if defined(ENABLE_TIMER)
#include <stdio.h>
#include <stdarg.h>
#if defined(HAVE_PAPI)
#include <papi.h>
extern int gPAPI_flops_set; // defined in testing/magma_util.cpp
#endif
#endif
// If we're not using GNU C, elide __attribute__
#ifndef __GNUC__
#define __attribute__(x) /*NOTHING*/
#endif
/***************************************************************************//**
@param[out]
t On output, set to current time.
If ENABLE_TIMER is not defined, does nothing.
@ingroup magma_timer
*******************************************************************************/
static inline void timer_start( magma_timer_t &t )
{
#if defined(ENABLE_TIMER)
t = magma_wtime();
#endif
}
/***************************************************************************//**
@param[out]
t On output, set to current time.
@param[in]
queue Queue to sync with, before getting time.
If ENABLE_TIMER is not defined, does nothing.
@ingroup magma_timer
*******************************************************************************/
static inline void timer_sync_start( magma_timer_t &t, magma_queue_t queue )
{
#if defined(ENABLE_TIMER)
magma_queue_sync( queue );
t = magma_wtime();
#endif
}
/***************************************************************************//**
@param[in,out]
t On input, time when timer_start() was called.
On output, set to (current time - start time).
@return t, to sum up times:
magma_timer_t time, time_sum=0;
for( ... ) {
timer_start( time );
...do timed operations...
time_sum += timer_stop( time );
...do other operations...
}
If ENABLE_TIMER is not defined, returns 0.
@ingroup magma_timer
*******************************************************************************/
static inline magma_timer_t timer_stop( magma_timer_t &t )
{
#if defined(ENABLE_TIMER)
t = magma_wtime() - t;
return t;
#else
return 0;
#endif
}
/***************************************************************************//**
@param[in,out]
t On input, time when timer_start() was called.
On output, set to (current time - start time).
@param[in]
queue Queue to sync with, before getting time.
@return t, to sum up times:
magma_timer_t time, time_sum=0;
for( ... ) {
timer_start( time );
...do timed operations...
time_sum += timer_stop( time );
...do other operations...
}
If ENABLE_TIMER is not defined, returns 0.
@ingroup magma_timer
*******************************************************************************/
static inline magma_timer_t timer_sync_stop( magma_timer_t &t, magma_queue_t queue )
{
#if defined(ENABLE_TIMER)
magma_queue_sync( queue );
t = magma_wtime() - t;
return t;
#else
return 0;
#endif
}
/***************************************************************************//**
@param[out]
flops On output, set to current flop counter.
Requires global gPAPI_flops_set to be setup by testing/magma_util.cpp
Note that newer CPUs may not support flop counts; see
https://icl.cs.utk.edu/projects/papi/wiki/PAPITopics:SandyFlops
If ENABLE_TIMER and HAVE_PAPI are not both defined, does nothing.
@ingroup magma_timer
*******************************************************************************/
static inline void flops_start( magma_flops_t &flops )
{
#if defined(ENABLE_TIMER) && defined(HAVE_PAPI)
PAPI_read( gPAPI_flops_set, &flops );
#endif
}
/***************************************************************************//**
@param[out]
flops On input, flop counter when flops_start() was called.
On output, set to (current flop counter - start flop counter).
@return flops, so you can sum up; see timer_stop().
If ENABLE_TIMER and HAVE_PAPI are not both defined, returns 0.
@ingroup magma_timer
*******************************************************************************/
static inline magma_flops_t flops_stop( magma_flops_t &flops )
{
#if defined(ENABLE_TIMER) && defined(HAVE_PAPI)
magma_flops_t end;
PAPI_read( gPAPI_flops_set, &end );
flops = end - flops;
return flops;
#else
return 0;
#endif
}
/***************************************************************************//**
If ENABLE_TIMER is defined, same as printf;
else does nothing (returns 0).
@ingroup magma_timer
*******************************************************************************/
static inline int timer_printf( const char* format, ... )
__attribute__((format(printf,1,2)));
static inline int timer_printf( const char* format, ... )
{
int len = 0;
#if defined(ENABLE_TIMER)
va_list ap;
va_start( ap, format );
len = vprintf( format, ap );
va_end( ap );
#endif
return len;
}
/***************************************************************************//**
If ENABLE_TIMER is defined, same as fprintf;
else does nothing (returns 0).
@ingroup magma_timer
*******************************************************************************/
static inline int timer_fprintf( FILE* stream, const char* format, ... )
__attribute__((format(printf,2,3)));
static inline int timer_fprintf( FILE* stream, const char* format, ... )
{
int len = 0;
#if defined(ENABLE_TIMER)
va_list ap;
va_start( ap, format );
len = vfprintf( stream, format, ap );
va_end( ap );
#endif
return len;
}
/***************************************************************************//**
If ENABLE_TIMER is defined, same as snprintf;
else does nothing (returns 0).
@ingroup magma_timer
*******************************************************************************/
static inline int timer_snprintf( char* str, size_t size, const char* format, ... )
__attribute__((format(printf,3,4)));
static inline int timer_snprintf( char* str, size_t size, const char* format, ... )
{
int len = 0;
#if defined(ENABLE_TIMER)
va_list ap;
va_start( ap, format );
len = vsnprintf( str, size, format, ap );
va_end( ap );
#endif
return len;
}
#endif // #ifndef MAGMA_TIMER_H
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