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/*************************************** |
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Auteur : Pierre Aubert |
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Mail : pierre.aubert@lapp.in2p3.fr |
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Licence : CeCILL-C |
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****************************************/ |
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#ifndef __MICRO_BENCHMARK_RDTSC_IMPL_H__ |
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#define __MICRO_BENCHMARK_RDTSC_IMPL_H__ |
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#include "phoenix_timer.h" |
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#include "micro_benchmark_rdtsc.h" |
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///Do the micro benchmarking of a given function and gives performance results in cy |
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/** @param[out] ellapsedTimeCy : ellapsed time in cy |
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* @param[out] ellapsedTimeErrorCy : error on the ellapsed time in cy |
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* @param nbTestPerf : number of performance test |
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* @param nbCallPerTest : number of calls per performance test |
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* @param __f : function to be called and benchmarked |
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* @param __args : parameter of the function to be benchmarked |
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*/ |
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template<typename _Callable, typename... _Args> |
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void micro_benchmarkRdtsc(double & ellapsedTimeCy, double & ellapsedTimeErrorCy, size_t nbTestPerf, size_t nbCallPerTest, |
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_Callable&& __f, _Args&&... __args) |
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{ |
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VecEllapsedTime vecTimeCy; |
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for(size_t i(0lu); i < nbTestPerf; ++i){ |
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//Stating the timer |
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size_t beginTime = phoenix_rdtsc(); |
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for(size_t j(0lu); j < nbCallPerTest; ++j){ |
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__f(__args...); |
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} |
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//Get the time of the nbCallPerTest calls |
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size_t elapsedTime(phoenix_rdtsc() - beginTime); |
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double fullCy(elapsedTime/((double)nbCallPerTest)); |
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vecTimeCy.push_back(fullCy); |
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} |
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MapOrderedTime mapOrderTime; |
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micro_benchmarkVecToMap(mapOrderTime, vecTimeCy); |
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size_t nbValueUsed(vecTimeCy.size()*0.7 + 1lu); |
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if(nbValueUsed > vecTimeCy.size()){ |
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nbValueUsed = vecTimeCy.size(); |
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} |
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micro_benchmarkComputeTime(ellapsedTimeCy, ellapsedTimeErrorCy, mapOrderTime, nbValueUsed); |
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} |
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///Do the micro benchmarking of a given function and gives performance results in cy |
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/** @param[out] ellapsedTimeCy : ellapsed time in cy |
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* @param[out] ellapsedTimeErrorCy : error on the ellapsed time in cy |
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* @param[out] timePerElement : time per element in cy |
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* @param[out] timeErrorPerElement : error of time per element in cy |
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* @param nbTestPerf : number of performance test |
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* @param nbCallPerTest : number of calls per performance test |
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* @param nbElement : number of element treated by the function __f |
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* @param __f : function to be called and benchmarked |
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* @param __args : parameter of the function to be benchmarked |
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*/ |
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template<typename _Callable, typename... _Args> |
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void micro_benchmarkRdtsc(double & ellapsedTimeCy, double & ellapsedTimeErrorCy, |
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double & timePerElement, double & timeErrorPerElement, size_t nbTestPerf, size_t nbCallPerTest, size_t nbElement, |
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_Callable&& __f, _Args&&... __args) |
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{ |
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micro_benchmarkRdtsc(ellapsedTimeCy, ellapsedTimeErrorCy, nbTestPerf, nbCallPerTest, __f, __args...); |
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timePerElement = ellapsedTimeCy/((double)nbElement); |
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timeErrorPerElement = ellapsedTimeErrorCy/((double)nbElement); |
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} |
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///Do the micro benchmarking of a given function and gives performance results in cy and print the result |
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/** @param testName : name of the performance test |
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* @param nbTestPerf : number of performance test |
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* @param nbCallPerTest : number of calls per performance test |
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* @param nbElement : number of element treated by the function __f |
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* @param __f : function to be called and benchmarked |
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* @param __args : parameter of the function to be benchmarked |
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*/ |
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template<typename _Callable, typename... _Args> |
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void micro_benchmarkRdtscPrint(const std::string & testName, size_t nbTestPerf, size_t nbCallPerTest, size_t nbElement, _Callable&& __f, _Args&&... __args){ |
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double ellapsedTimeCy(0.0), ellapsedTimeErrorCy(0.0), timePerElement(0.0), timeErrorPerElement(0.0); |
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micro_benchmarkRdtsc(ellapsedTimeCy, ellapsedTimeErrorCy, timePerElement, timeErrorPerElement, nbTestPerf, nbCallPerTest, nbElement, __f, __args...); |
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std::cout << testName << " : nbElement = "<<nbElement<<", timePerElement = " << timePerElement << " cy/el ± "<<timeErrorPerElement<<", elapsedTime = " << ellapsedTimeCy << " cy ± "<<ellapsedTimeErrorCy << std::endl; |
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std::cerr << nbElement << "\t" << timePerElement << "\t" << ellapsedTimeCy << "\t" << timeErrorPerElement << "\t" << ellapsedTimeErrorCy << std::endl; |
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} |
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#endif |
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