#include </builds/gaudi/Gaudi/GaudiSvc/src/CPUCrunchSvc/CPUCrunchSvc.h>

Inheritance diagram for CPUCrunchSvc:

[legend]

Collaboration diagram for CPUCrunchSvc:

[legend]

Public Member Functions
	CPUCrunchSvc (const std::string &name, ISvcLocator *svc)

virtual StatusCode	initialize () override

std::chrono::milliseconds	crunch_for (const std::chrono::milliseconds &crunchtime) const override

Public Member Functions inherited from extends< Service, ICPUCrunchSvc >
void *	i_cast (const InterfaceID &tid) const override
	Implementation of IInterface::i_cast. More...

StatusCode	queryInterface (const InterfaceID &ti, void **pp) override
	Implementation of IInterface::queryInterface. More...

std::vector< std::string >	getInterfaceNames () const override
	Implementation of IInterface::getInterfaceNames. More...

Public Member Functions inherited from Service
const std::string &	name () const override
	Retrieve name of the service More...

StatusCode	configure () override

StatusCode	initialize () override

StatusCode	start () override

StatusCode	stop () override

StatusCode	finalize () override

StatusCode	terminate () override

Gaudi::StateMachine::State	FSMState () const override

Gaudi::StateMachine::State	targetFSMState () const override

StatusCode	reinitialize () override

StatusCode	restart () override

StatusCode	sysInitialize () override
	Initialize Service More...

StatusCode	sysStart () override
	Initialize Service More...

StatusCode	sysStop () override
	Initialize Service More...

StatusCode	sysFinalize () override
	Finalize Service More...

StatusCode	sysReinitialize () override
	Re-initialize the Service. More...

StatusCode	sysRestart () override
	Re-initialize the Service. More...

	Service (std::string name, ISvcLocator *svcloc)
	Standard Constructor More...

SmartIF< ISvcLocator > &	serviceLocator () const override
	Retrieve pointer to service locator More...

template<class T >
StatusCode	service (const std::string &name, const T *&psvc, bool createIf=true) const
	Access a service by name, creating it if it doesn't already exist. More...

template<class T >
StatusCode	service (const std::string &name, T *&psvc, bool createIf=true) const

template<typename IFace = IService>
SmartIF< IFace >	service (const std::string &name, bool createIf=true) const

template<class T >
StatusCode	service (const std::string &svcType, const std::string &svcName, T *&psvc) const
	Access a service by name and type, creating it if it doesn't already exist. More...

template<class T >
Gaudi::Details::PropertyBase *	declareProperty (const std::string &name, ToolHandle< T > &hndl, const std::string &doc="none")

template<class T >
StatusCode	declareTool (ToolHandle< T > &handle, bool createIf=true)

template<class T >
StatusCode	declareTool (ToolHandle< T > &handle, const std::string &toolTypeAndName, bool createIf=true)
	Declare used tool. More...

template<class T >
Gaudi::Details::PropertyBase *	declareProperty (const std::string &name, ToolHandleArray< T > &hndlArr, const std::string &doc="none")

template<class T >
void	addToolsArray (ToolHandleArray< T > &hndlArr)

const std::vector< IAlgTool * > &	tools () const

SmartIF< IAuditorSvc > &	auditorSvc () const
	The standard auditor service.May not be invoked before sysInitialize() has been invoked. More...

Public Member Functions inherited from PropertyHolder< CommonMessaging< implements< IService, IProperty, IStateful > > >
	PropertyHolder ()=default

Gaudi::Details::PropertyBase &	declareProperty (Gaudi::Details::PropertyBase &prop)
	Declare a property. More...

Gaudi::Details::PropertyBase *	declareProperty (const std::string &name, TYPE &value, const std::string &doc="none")
	Helper to wrap a regular data member and use it as a regular property. More...

Gaudi::Details::PropertyBase *	declareProperty (const std::string &name, Gaudi::Property< TYPE, VERIFIER, HANDLERS > &prop, const std::string &doc="none")
	Declare a PropertyBase instance setting name and documentation. More...

Gaudi::Details::PropertyBase *	declareRemoteProperty (const std::string &name, IProperty *rsvc, const std::string &rname="")
	Declare a remote property. More...

StatusCode	setProperty (const std::string &name, const Gaudi::Details::PropertyBase &p) override
	set the property from another property with a different name More...

StatusCode	setProperty (const std::string &s) override
	set the property from the formatted string More...

StatusCode	setProperty (const Gaudi::Details::PropertyBase &p)
	Set the property from a property. More...

virtual StatusCode	setProperty (const std::string &name, const Gaudi::Details::PropertyBase &p)=0
	Set the property from a property with a different name. More...

virtual StatusCode	setProperty (const std::string &s)=0
	Set the property by string. More...

StatusCode	setProperty (const std::string &name, const char *v)
	Special case for string literals. More...

StatusCode	setProperty (const std::string &name, const std::string &v)
	Special case for std::string. More...

StatusCode	setProperty (const std::string &name, const TYPE &value)
	set the property form the value More...

StatusCode	setPropertyRepr (const std::string &n, const std::string &r) override
	set the property from name and value string representation More...

StatusCode	getProperty (Gaudi::Details::PropertyBase *p) const override
	get the property More...

const Gaudi::Details::PropertyBase &	getProperty (std::string_view name) const override
	get the property by name More...

StatusCode	getProperty (std::string_view n, std::string &v) const override
	convert the property to the string More...

const std::vector< Gaudi::Details::PropertyBase * > &	getProperties () const override
	get all properties More...

bool	hasProperty (std::string_view name) const override
	Return true if we have a property with the given name. More...

Gaudi::Details::PropertyBase *	property (std::string_view name) const
	\fixme property and bindPropertiesTo should be protected More...

void	bindPropertiesTo (Gaudi::Interfaces::IOptionsSvc &optsSvc)

	PropertyHolder (const PropertyHolder &)=delete

PropertyHolder &	operator= (const PropertyHolder &)=delete

Public Member Functions inherited from CommonMessaging< implements< IService, IProperty, IStateful > >
MSG::Level	msgLevel () const
	get the cached level (originally extracted from the embedded MsgStream) More...

bool	msgLevel (MSG::Level lvl) const
	get the output level from the embedded MsgStream More...

Private Member Functions
void	calibrate ()

unsigned int	getNCaliIters (std::chrono::microseconds runtime) const

void	findPrimes (unsigned int) const

Private Attributes
std::vector< unsigned int >	m_times_vect

Gaudi::Property< std::vector< unsigned int > >	m_niters_vect

Gaudi::Property< bool >	m_shortCalib { this, "shortCalib", false, "Enable coarse grained calibration" }

Gaudi::Property< unsigned int >	m_minCalibTime

Gaudi::Property< int >	m_numCalibRuns { this, "numCalibRuns", 1, "Number of times to do calibration run" }

Gaudi::Property< float >	m_corrFact

Additional Inherited Members
Public Types inherited from extends< Service, ICPUCrunchSvc >
using	base_class = extends
	Typedef to this class. More...

using	extend_interfaces_base = extend_interfaces< Interfaces... >
	Typedef to the base of this class. More...

Public Types inherited from Service
using	Factory = Gaudi::PluginService::Factory< IService (const std::string &, ISvcLocator )>

Public Types inherited from PropertyHolder< CommonMessaging< implements< IService, IProperty, IStateful > > >
using	PropertyHolderImpl = PropertyHolder< CommonMessaging< implements< IService, IProperty, IStateful > > >
	Typedef used to refer to this class from derived classes, as in. More...

Public Types inherited from CommonMessaging< implements< IService, IProperty, IStateful > >
using	base_class = CommonMessaging

Public Types inherited from extend_interfaces< Interfaces... >
using	ext_iids = typename Gaudi::interface_list_cat< typename Interfaces::ext_iids... >::type
	take union of the ext_iids of all Interfaces... More...

Protected Member Functions inherited from Service
std::vector< IAlgTool * > &	tools ()

	~Service () override
	Standard Destructor More...

int	outputLevel () const
	get the `Service's` output level More...

Protected Member Functions inherited from CommonMessaging< implements< IService, IProperty, IStateful > >
MSG::Level	setUpMessaging () const
	Set up local caches. More...

MSG::Level	resetMessaging ()
	Reinitialize internal states. More...

void	updateMsgStreamOutputLevel (int level)
	Update the output level of the cached MsgStream. More...

Protected Attributes inherited from Service
Gaudi::StateMachine::State	m_state = Gaudi::StateMachine::OFFLINE
	Service state More...

Gaudi::StateMachine::State	m_targetState = Gaudi::StateMachine::OFFLINE
	Service state More...

Gaudi::Property< int >	m_outputLevel { this, "OutputLevel", MSG::NIL, "output level" }
	flag indicating whether ToolHandle tools have been added to m_tools More...

Gaudi::Property< bool >	m_auditInit { this, "AuditServices", false, "[[deprecated]] unused" }

Gaudi::Property< bool >	m_auditorInitialize { this, "AuditInitialize", false, "trigger auditor on initialize()" }

Gaudi::Property< bool >	m_auditorStart { this, "AuditStart", false, "trigger auditor on start()" }

Gaudi::Property< bool >	m_auditorStop { this, "AuditStop", false, "trigger auditor on stop()" }

Gaudi::Property< bool >	m_auditorFinalize { this, "AuditFinalize", false, "trigger auditor on finalize()" }

Gaudi::Property< bool >	m_auditorReinitialize { this, "AuditReinitialize", false, "trigger auditor on reinitialize()" }

Gaudi::Property< bool >	m_auditorRestart { this, "AuditRestart", false, "trigger auditor on restart()" }

Gaudi::Property< bool >	m_autoRetrieveTools

Gaudi::Property< bool >	m_checkToolDeps

SmartIF< IAuditorSvc >	m_pAuditorSvc
	Auditor Service More...

Detailed Description

Definition at line 23 of file CPUCrunchSvc.h.

Constructor & Destructor Documentation

◆ CPUCrunchSvc()

CPUCrunchSvc::CPUCrunchSvc	(	const std::string &	name,
		ISvcLocator *	svc
	)

Definition at line 35 of file CPUCrunchSvc.cpp.

35 : base_class( name, svc ) {}

Member Function Documentation

◆ calibrate()

void CPUCrunchSvc::calibrate ( )

private

Definition at line 58 of file CPUCrunchSvc.cpp.

                              {
   if ( m_niters_vect.value().size() == 0 ) {
     m_niters_vect = { 0,     500,   600,   700,   800,   1000,  1300,  1600,  2000,  2300,
                       2600,  3000,  3300,  3500,  3900,  4200,  5000,  6000,  8000,  10000,
                       12000, 15000, 17000, 20000, 25000, 30000, 35000, 40000, 50000, 60000 };
     if ( !m_shortCalib ) {
       m_niters_vect.value().push_back( 80000 );
       m_niters_vect.value().push_back( 100000 );
       m_niters_vect.value().push_back( 150000 );
       m_niters_vect.value().push_back( 200000 );
     }
   }
  
   if ( m_niters_vect.value().at( 0 ) != 0 ) {
     warning() << "NIterationsVect[0]= " << m_niters_vect.value().at( 0 ) << " but needs to be zero. resetting it."
               << endmsg;
     m_niters_vect.value().at( 0 ) = 0;
   }
  
   m_times_vect.resize( m_niters_vect.value().size() );
   m_times_vect.at( 0 ) = 0;
  
   const unsigned int minCalibTime_us = m_minCalibTime * 1000;
  
   // warm it up by doing 20k iterations
   findPrimes( 20000 );
  
   for ( int irun = 0; irun < m_numCalibRuns; ++irun ) {
  
     debug() << "Starting calibration run " << irun + 1 << " ..." << endmsg;
     for ( unsigned int i = 1; i < m_niters_vect.value().size(); ++i ) {
       unsigned int niters = m_niters_vect.value().at( i );
       unsigned int trials = 30;
       do {
         auto start_cali = tbb::tick_count::now();
         findPrimes( niters );
         auto stop_cali       = tbb::tick_count::now();
         auto deltat          = ( stop_cali - start_cali ).seconds();
         m_times_vect.at( i ) = deltat * 1000000; // in microseconds
         debug() << " Calibration: # iters = " << niters << " => " << m_times_vect.at( i ) << " us" << endmsg;
         trials--;
       } while ( trials > 0 && m_times_vect.at( i ) < m_times_vect.at( i - 1 ) ); // make sure that they are monotonic
  
       if ( i == m_niters_vect.value().size() - 1 && minCalibTime_us != 0 ) {
         if ( m_times_vect.at( i ) < minCalibTime_us ) {
           debug() << "  increasing calib vect with " << int( m_niters_vect.value().back() * 1.2 )
                   << " iterations to reach min calib time of " << m_minCalibTime.value() << " ms " << endmsg;
           m_niters_vect.value().push_back( int( m_niters_vect.value().back() * 1.2 ) );
           m_times_vect.push_back( 0. );
         }
       }
     }
   }
   if ( essentiallyEqual( m_corrFact, 1. ) ) {
     debug() << "Adjusting times with correction factor " << m_corrFact.value() << endmsg;
     for ( auto& t : m_times_vect ) { t = t * m_corrFact; }
   }
   debug() << "Calibration finished!" << endmsg;
 }

◆ crunch_for()

std::chrono::milliseconds CPUCrunchSvc::crunch_for ( const std::chrono::milliseconds & crunchtime ) const

override

Definition at line 210 of file CPUCrunchSvc.cpp.

                                                                                               {
  
   const unsigned int niters = getNCaliIters( crunchtime );
  
   auto start_cali = tbb::tick_count::now();
   findPrimes( niters );
   auto stop_cali = tbb::tick_count::now();
  
   std::chrono::milliseconds actual( int( 1000 * ( stop_cali - start_cali ).seconds() ) );
  
   DEBUG_MSG << "crunch for " << crunchtime.count() << " ms == " << niters << " iter. actual time: " << actual.count()
             << " ms. ratio: " << float( actual.count() ) / crunchtime.count() << endmsg;
  
   return actual;
 }

◆ findPrimes()

void CPUCrunchSvc::findPrimes ( unsigned int n_iterations ) const

private

Definition at line 158 of file CPUCrunchSvc.cpp.

                                                                      {
   // Flag to trigger the allocation
   bool is_prime;
  
   // Let's prepare the material for the allocations
   unsigned int   primes_size = 1;
   unsigned long* primes      = new unsigned long[primes_size];
   primes[0]                  = 2;
  
   unsigned long i = 2;
  
   // Loop on numbers
   for ( unsigned long int iiter = 0; iiter < n_iterations; iiter++ ) {
     // Once at max, it returns to 0
     i += 1;
  
     // Check if it can be divided by the smaller ones
     is_prime = true;
     for ( unsigned long j = 2; j < i && is_prime; ++j ) {
       if ( i % j == 0 ) is_prime = false;
     } // end loop on numbers < than tested one
  
     if ( is_prime ) {
       // copy the array of primes (INEFFICIENT ON PURPOSE!)
       unsigned int   new_primes_size = 1 + primes_size;
       unsigned long* new_primes      = new unsigned long[new_primes_size];
  
       for ( unsigned int prime_index = 0; prime_index < primes_size; prime_index++ ) {
         new_primes[prime_index] = primes[prime_index];
       }
       // attach the last prime
       new_primes[primes_size] = i;
  
       // Update primes array
       delete[] primes;
       primes      = new_primes;
       primes_size = new_primes_size;
     } // end is prime
  
   } // end of while loop
  
   // Fool Compiler optimisations:
   for ( unsigned int prime_index = 0; prime_index < primes_size; prime_index++ )
     if ( primes[prime_index] == 4 )
       debug() << "This does never happen, but it's necessary too fool aggressive compiler optimisations!" << endmsg;
  
   delete[] primes;
 }

◆ getNCaliIters()

unsigned int CPUCrunchSvc::getNCaliIters ( std::chrono::microseconds runtime ) const

private

Definition at line 120 of file CPUCrunchSvc.cpp.

                                                                               {
  
   unsigned int smaller_i   = 0;
   double       time        = 0.;
   bool         found       = false;
   double       corrRuntime = runtime.count(); // * m_corrFact;
   // We know that the first entry is 0, so we start to iterate from 1
   for ( unsigned int i = 1; i < m_times_vect.size(); i++ ) {
     time = m_times_vect.at( i );
     if ( time > corrRuntime ) {
       smaller_i = i - 1;
       found     = true;
       break;
     }
   }
  
   // Case 1: we are outside the interpolation range, we take the last 2 points
   if ( not found ) smaller_i = m_times_vect.size() - 2;
  
   // Case 2: we maeke a linear interpolation
   // y=mx+q
   const auto   x0 = m_times_vect.at( smaller_i );
   const auto   x1 = m_times_vect.at( smaller_i + 1 );
   const auto   y0 = m_niters_vect.value().at( smaller_i );
   const auto   y1 = m_niters_vect.value().at( smaller_i + 1 );
   const double m  = (double)( y1 - y0 ) / (double)( x1 - x0 );
   const double q  = y0 - m * x0;
  
   const unsigned int nCaliIters = m * corrRuntime + q;
  
   VERBOSE_MSG << "x0: " << x0 << " x1: " << x1 << " y0: " << y0 << " y1: " << y1 << "  m: " << m << " q: " << q
               << "  itr: " << nCaliIters << endmsg;
  
   return nCaliIters;
 }

◆ initialize()

StatusCode CPUCrunchSvc::initialize ( )

overridevirtual

Definition at line 39 of file CPUCrunchSvc.cpp.

                                     {
   debug() << "initialize" << endmsg;
  
   if ( base_class::initialize().isFailure() ) {
     error() << "Error initializing base class" << endmsg;
     return StatusCode::FAILURE;
   }
  
   calibrate();
  
   return StatusCode::SUCCESS;
 }

Member Data Documentation

◆ m_corrFact

Gaudi::Property<float> CPUCrunchSvc::m_corrFact

private

Initial value:

{ this, "calibCorrectionFactor", 1.,

"Calibration correction factor to take into account things like turbo boost" }

Definition at line 48 of file CPUCrunchSvc.h.

◆ m_minCalibTime

Gaudi::Property<unsigned int> CPUCrunchSvc::m_minCalibTime

private

Initial value:

{ this, "minCalibTime", 0,

"Minimum number of milliseconds to do calibration" }

Definition at line 45 of file CPUCrunchSvc.h.

◆ m_niters_vect

Gaudi::Property<std::vector<unsigned int> > CPUCrunchSvc::m_niters_vect

private

Initial value:

{

this, "NIterationsVect", {}, "Number of iterations for the calibration." }

Definition at line 42 of file CPUCrunchSvc.h.

◆ m_numCalibRuns

Gaudi::Property<int> CPUCrunchSvc::m_numCalibRuns { this, "numCalibRuns", 1, "Number of times to do calibration run" }

private

Definition at line 47 of file CPUCrunchSvc.h.

◆ m_shortCalib

Gaudi::Property<bool> CPUCrunchSvc::m_shortCalib { this, "shortCalib", false, "Enable coarse grained calibration" }

private

Definition at line 44 of file CPUCrunchSvc.h.

◆ m_times_vect

std::vector<unsigned int> CPUCrunchSvc::m_times_vect

private

Definition at line 40 of file CPUCrunchSvc.h.

The documentation for this class was generated from the following files:

GaudiSvc/src/CPUCrunchSvc/CPUCrunchSvc.h
GaudiSvc/src/CPUCrunchSvc/CPUCrunchSvc.cpp

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ CPUCrunchSvc()

Member Function Documentation

◆ calibrate()

◆ crunch_for()

◆ findPrimes()

◆ getNCaliIters()

◆ initialize()

Member Data Documentation

◆ m_corrFact

◆ m_minCalibTime

◆ m_niters_vect

◆ m_numCalibRuns

◆ m_shortCalib

◆ m_times_vect