stressVdt.cxx File Reference

#include <vector>
#include <iostream>
#include <cmath>
#include <assert.h>
#include <limits>
#include <iomanip>
#include <map>
#include <string>
#include "vdt/vdtMath.h"
#include "TStopwatch.h"
#include "TRandom3.h"
#include "TH1F.h"
#include "TCanvas.h"
#include "TError.h"

Include dependency graph for stressVdt.cxx:

Go to the source code of this file.

Enumerations
enum	rangeType {   kReal, kExp, kExpf, kRealPlus,   km1p1 }

Functions
template<class T >
uint64_t	fp2uint (T)
template<>
uint64_t	fp2uint< double > (double x)
template<>
uint64_t	fp2uint< float > (float x)
template<class T >
uint32_t	diffbit (const T a, const T b)
	Returns most significative different bit. More...
template<typename T , typename F >
void	calculateValues (F mathFunc, const std::vector< T > &inputVector, std::vector< T > &outputVector)
template<typename T >
void	compareOutputs (const std::vector< T > &inputVector1, const std::vector< T > &inputVector2, std::vector< uint32_t > &outputVector)
template<typename T >
void	fillRandom (std::vector< T > &randomV, const rangeType theRangeType)
template<typename T >
void	treatBinDiffHisto (TH1F &histo, const std::vector< T > &VDTVals, const std::vector< T > &SystemVals)
template<typename T , typename F >
double	measureTiming (F mathFunc, const std::vector< T > &inputVector, std::vector< T > &outputVector)
template<typename T , typename F1 , typename F2 >
void	compareFunctions (const std::string &label, F1 vdtFunc, F2 systemFunc, const std::vector< T > &inputVector, std::vector< T > &outputVectorVDT, std::vector< T > &outputVectorSystem, float &speedup, uint32_t &maxdiffBit, TH1F &histo)
void	checkFunction (const std::string &label, float, uint32_t maxdiffBit)
float	isqrtf (float x)
double	isqrt (double x)
void	spStep1 ()
void	spStep2 ()
void	spStep3 ()
void	dpStep1 ()
void	dpStep2 ()
void	dpStep3 ()
int	main ()

Variables
const double	RANGE =3000.
	Simple program to benchmark vdt accuracy and cpu performance. More...
const uint32_t	SIZE = 16777216
struct staticInitHelper	gbl

Enumeration Type Documentation

enum rangeType

Enumerator
kReal
kExp
kExpf
kRealPlus
km1p1

Definition at line 91 of file stressVdt.cxx.

Function Documentation

template<typename T , typename F >

void calculateValues ( F  mathFunc, const std::vector< T > &  inputVector, std::vector< T > &  outputVector  )

inline

Definition at line 60 of file stressVdt.cxx.

void checkFunction	(	const std::string &	label,
		float	,
		uint32_t	maxdiffBit
	)

Definition at line 253 of file stressVdt.cxx.

Referenced by dpStep1(), dpStep2(), dpStep3(), spStep1(), spStep2(), and spStep3().

template<typename T , typename F1 , typename F2 >

void compareFunctions ( const std::string &  label, F1  vdtFunc, F2  systemFunc, const std::vector< T > &  inputVector, std::vector< T > &  outputVectorVDT, std::vector< T > &  outputVectorSystem, float &  speedup, uint32_t &  maxdiffBit, TH1F &  histo  )

inline

Definition at line 200 of file stressVdt.cxx.

template<typename T >

void compareOutputs	(	const std::vector< T > &	inputVector1,
		const std::vector< T > &	inputVector2,
		std::vector< uint32_t > &	outputVector
	)

Definition at line 76 of file stressVdt.cxx.

Referenced by treatBinDiffHisto().

template<class T >

uint32_t diffbit ( const T  a, const T  b  )

inline

Returns most significative different bit.

Definition at line 47 of file stressVdt.cxx.

Referenced by compareOutputs().

void dpStep1

(

)

Definition at line 332 of file stressVdt.cxx.

Referenced by main().

void dpStep2

(

)

Definition at line 356 of file stressVdt.cxx.

Referenced by main().

void dpStep3

(

)

Definition at line 373 of file stressVdt.cxx.

Referenced by main().

template<typename T >

void fillRandom	(	std::vector< T > &	randomV,
		const rangeType	theRangeType
	)

Definition at line 98 of file stressVdt.cxx.

Referenced by dpStep1(), dpStep2(), dpStep3(), spStep1(), spStep2(), and spStep3().

template<class T >

uint64_t fp2uint

(

T

)

Definition at line 26 of file stressVdt.cxx.

template<>

uint64_t fp2uint< double >

(

double

x

)

Definition at line 33 of file stressVdt.cxx.

template<>

uint64_t fp2uint< float >

(

float

x

)

Definition at line 39 of file stressVdt.cxx.

double isqrt ( double  x )

inline

Definition at line 266 of file stressVdt.cxx.

Referenced by dpStep2().

float isqrtf ( float  x )

inline

Definition at line 265 of file stressVdt.cxx.

Referenced by spStep2().

int main

(

)

Definition at line 391 of file stressVdt.cxx.

template<typename T , typename F >

double measureTiming ( F  mathFunc, const std::vector< T > &  inputVector, std::vector< T > &  outputVector  )

inline

Definition at line 135 of file stressVdt.cxx.

void spStep1

(

)

Definition at line 273 of file stressVdt.cxx.

Referenced by main().

void spStep2

(

)

Definition at line 298 of file stressVdt.cxx.

Referenced by main().

void spStep3

(

)

Definition at line 315 of file stressVdt.cxx.

Referenced by main().

template<typename T >

void treatBinDiffHisto	(	TH1F &	histo,
		const std::vector< T > &	VDTVals,
		const std::vector< T > &	SystemVals
	)

Definition at line 118 of file stressVdt.cxx.

Referenced by compareFunctions().

Variable Documentation

struct staticInitHelper gbl

Referenced by checkFunction(), PyROOT::CreateScopeProxy(), TPython::ExecScript(), TProofPerfAnalysis::FillWrkInfo(), Cppyy::GetDatamemberName(), Cppyy::GetDatamemberOffset(), Cppyy::GetDatamemberType(), Cppyy::GetDimensionSize(), Cppyy::IsConstData(), and Cppyy::IsEnumData().

const double RANGE =3000.

Simple program to benchmark vdt accuracy and cpu performance.

Definition at line 20 of file stressVdt.cxx.

Referenced by fillRandom().

const uint32_t SIZE = 16777216

Definition at line 21 of file stressVdt.cxx.

Referenced by TGWin32::AddPixmap(), TGWin32::CreatePixmapFromData(), dpStep1(), dpStep2(), dpStep3(), ROOT::Internal::THistBufferedFillBase< THistConcurrentFiller< HIST, SIZE >, HIST, SIZE >::Fill(), main(), spStep1(), spStep2(), and spStep3().