A Equation power model. More...

#include <mathexpr_powermodel.hh>

Inheritance diagram for gem5::MathExprPowerModel:

Public Types
typedef MathExprPowerModelParams	Params

Public Types inherited from gem5::PowerModelState
typedef PowerModelStateParams	Params

Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Public Member Functions
	MathExprPowerModel (const Params &p)

double	getDynamicPower () const override
	Get the dynamic power consumption.

double	getStaticPower () const override
	Get the static power consumption.

double	getStatValue (const std::string &name) const
	Get the value for a variable (maps to a stat)

void	startup () override
	startup() is the final initialization call before simulation.

void	regStats () override
	Callback to set stat parameters.

Public Member Functions inherited from gem5::PowerModelState
	PowerModelState (const Params &p)

virtual void	setTemperature (Temperature temp)
	Temperature update.

void	setClockedObject (ClockedObject *clkobj)

Public Member Functions inherited from gem5::SimObject
const Params &	params () const

	SimObject (const Params &p)

virtual	~SimObject ()

virtual void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected.

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint.

virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint.

virtual void	regProbePoints ()
	Register probe points for this object.

virtual void	regProbeListeners ()
	Register probe listeners for this object.

ProbeManager *	getProbeManager ()
	Get the probe manager for this object.

virtual Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index.

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining.

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes.

virtual void	memInvalidate ()
	Invalidate the contents of memory buffers.

void	serialize (CheckpointOut &cp) const override
	Serialize an object.

void	unserialize (CheckpointIn &cp) override
	Unserialize an object.

Public Member Functions inherited from gem5::EventManager
EventQueue *	eventQueue () const

void	schedule (Event &event, Tick when)

void	deschedule (Event &event)

void	reschedule (Event &event, Tick when, bool always=false)

void	schedule (Event *event, Tick when)

void	deschedule (Event *event)

void	reschedule (Event *event, Tick when, bool always=false)

void	wakeupEventQueue (Tick when=(Tick) -1)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers.

void	setCurTick (Tick newVal)

	EventManager (EventManager &em)
	Event manger manages events in the event queue.

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

Public Member Functions inherited from gem5::Serializable
	Serializable ()

virtual	~Serializable ()

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section.

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object.

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from gem5::Drainable
DrainState	drainState () const
	Return the current drain state of an object.

virtual void	notifyFork ()
	Notify a child process of a fork.

Public Member Functions inherited from gem5::statistics::Group
	Group (Group parent, const char name=nullptr)
	Construct a new statistics group.

virtual	~Group ()

virtual void	resetStats ()
	Callback to reset stats.

virtual void	preDumpStats ()
	Callback before stats are dumped.

void	addStat (statistics::Info *info)
	Register a stat with this group.

const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object.

const std::vector< Info * > &	getStats () const
	Get all stats associated with this object.

void	addStatGroup (const char name, Group block)
	Add a stat block as a child of this block.

const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group.

void	mergeStatGroup (Group *block)
	Merge the contents (stats & children) of a block to this block.

	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

Public Member Functions inherited from gem5::Named
	Named (const std::string &name_)

virtual	~Named ()=default

virtual std::string	name () const

Private Member Functions
double	eval (const MathExpr &expr) const
	Evaluate an expression in the context of this object, fatal if evaluation fails.

Private Attributes
MathExpr	dyn_expr

MathExpr	st_expr

std::unordered_map< std::string, const statistics::Info * >	statsMap

Additional Inherited Members
Static Public Member Functions inherited from gem5::SimObject
static void	serializeAll (const std::string &cpt_dir)
	Create a checkpoint by serializing all SimObjects in the system.

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it.

static void	setSimObjectResolver (SimObjectResolver *resolver)
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.

static SimObjectResolver *	getSimObjectResolver ()
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.

Static Public Member Functions inherited from gem5::Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section.

static void	generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
	Generate a checkpoint file so that the serialization can be routed to it.

Protected Member Functions inherited from gem5::Drainable
	Drainable ()

virtual	~Drainable ()

virtual void	drainResume ()
	Resume execution after a successful drain.

void	signalDrainDone () const
	Signal that an object is drained.

Protected Attributes inherited from gem5::PowerModelState
Temperature	_temp
	Current temperature.

ClockedObject *	clocked_object
	The clocked object we belong to.

statistics::Value	dynamicPower

statistics::Value	staticPower

Protected Attributes inherited from gem5::SimObject
const SimObjectParams &	_params
	Cached copy of the object parameters.

Protected Attributes inherited from gem5::EventManager
EventQueue *	eventq
	A pointer to this object's event queue.

Detailed Description

A Equation power model.

The power is represented as a combination of some stats and automatic variables (like temperature).

Definition at line 59 of file mathexpr_powermodel.hh.

Member Typedef Documentation

◆ Params

typedef MathExprPowerModelParams gem5::MathExprPowerModel::Params

Definition at line 63 of file mathexpr_powermodel.hh.

Constructor & Destructor Documentation

◆ MathExprPowerModel()

gem5::MathExprPowerModel::MathExprPowerModel ( const Params & p )

Definition at line 51 of file mathexpr_powermodel.cc.

Member Function Documentation

◆ eval()

double gem5::MathExprPowerModel::eval ( const MathExpr & expr ) const

private

Evaluate an expression in the context of this object, fatal if evaluation fails.

Parameters

expr	Expression to evaluate

Returns: Value of expression.

Definition at line 77 of file mathexpr_powermodel.cc.

References gem5::MathExpr::eval(), and getStatValue().

Referenced by getDynamicPower(), and getStaticPower().

◆ getDynamicPower()

double gem5::MathExprPowerModel::getDynamicPower ( ) const

inlineoverridevirtual

Get the dynamic power consumption.

Returns: Power (Watts) consumed by this object (dynamic component)

Implements gem5::PowerModelState.

Definition at line 71 of file mathexpr_powermodel.hh.

References dyn_expr, and eval().

◆ getStaticPower()

double gem5::MathExprPowerModel::getStaticPower ( ) const

inlineoverridevirtual

Get the static power consumption.

Returns: Power (Watts) consumed by this object (static component)

Implements gem5::PowerModelState.

Definition at line 78 of file mathexpr_powermodel.hh.

References eval(), and st_expr.

◆ getStatValue()

double gem5::MathExprPowerModel::getStatValue ( const std::string & name ) const

Get the value for a variable (maps to a stat)

Parameters

name	Name of the variable to retrieve the value from

Returns: Power (Watts) consumed by this object (static component)

Definition at line 86 of file mathexpr_powermodel.cc.

References gem5::PowerModelState::_temp, gem5::PowerModelState::clocked_object, gem5::Clocked::clockPeriod(), gem5::ArmISA::fi, gem5::Named::name(), panic, gem5::ArmISA::si, statsMap, gem5::Temperature::toCelsius(), gem5::statistics::VectorInfo::total(), gem5::statistics::ScalarInfo::value(), and gem5::Clocked::voltage().

Referenced by eval().

◆ regStats()

void gem5::MathExprPowerModel::regStats ( )

overridevirtual

Callback to set stat parameters.

This callback is typically used for complex stats (e.g., distributions) that need parameters in addition to a name and a description. Stat names and descriptions should typically be set from the constructor usingo from the constructor using the ADD_STAT macro.

Reimplemented from gem5::statistics::Group.

Definition at line 115 of file mathexpr_powermodel.cc.

References gem5::statistics::Group::regStats().

◆ startup()

void gem5::MathExprPowerModel::startup ( )

overridevirtual

startup() is the final initialization call before simulation.

All state is initialized (including unserialized state, if any, such as the curTick() value), so this is the appropriate place to schedule initial event(s) for objects that need them.

Reimplemented from gem5::SimObject.

Definition at line 57 of file mathexpr_powermodel.cc.

References dyn_expr, fatal_if, gem5::statistics::resolve(), st_expr, and statsMap.

Member Data Documentation

◆ dyn_expr

MathExpr gem5::MathExprPowerModel::dyn_expr

private

Definition at line 103 of file mathexpr_powermodel.hh.

Referenced by getDynamicPower(), and startup().

◆ st_expr

MathExpr gem5::MathExprPowerModel::st_expr

private

Definition at line 103 of file mathexpr_powermodel.hh.

Referenced by getStaticPower(), and startup().

◆ statsMap

std::unordered_map<std::string, const statistics::Info*> gem5::MathExprPowerModel::statsMap

private

Definition at line 106 of file mathexpr_powermodel.hh.

Referenced by getStatValue(), and startup().

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

sim/power/mathexpr_powermodel.hh
sim/power/mathexpr_powermodel.cc

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

Constructor & Destructor Documentation

◆ MathExprPowerModel()

Member Function Documentation

◆ eval()

◆ getDynamicPower()

◆ getStaticPower()

◆ getStatValue()

◆ regStats()

◆ startup()

Member Data Documentation

◆ dyn_expr

◆ st_expr

◆ statsMap