BCP_scheduler Class Reference

#include <BCP_process.hpp>

Public Member Functions
	BCP_scheduler ()
	Default constructor.
void	setParams (double OverEstimationStatic, double SwitchToRateThreshold, double TimeRootNodeSolve, double FactorTimeHorizon, double OverEstimationRate, double MaxNodeIdRatio, int MaxNodeIdNum, int MaxSbIdNum, int MinSbIdNum)
	Method for setting scheduler parameters.
void	add_free_ids (int numIds, const int *ids)
	Pass in a list of freeIds_ to add.
int	request_sb_ids (int numIds, int *ids)
	Request for a number of id's to do some strong branching.
void	release_sb_id (int id)
	Gives back to scheduler an id used for strong branching.
int	request_node_id ()
	Request an id for processing nodes.
void	release_node_id (int id)
	Give back an id to scheduler used for processing a node.
bool	has_free_node_id () const
	Decide if there is an id that can be returned for processin a node.
int	numNodeIds () const
	Return the number of busy LP processes.
int	maxNodeIds () const
	Return the maximum possible number of busy LP processes.
double	node_idle (int p)
	Return how much time did process p spent idling as a node process.
double	sb_idle (int p)
	Return how much time did process p spent idling as a SB process.
void	update_idle_times ()
	Update idle times with the last idle time.

Detailed Description

Definition at line 49 of file BCP_process.hpp.

Constructor & Destructor Documentation

BCP_scheduler()

BCP_scheduler::BCP_scheduler

(

)

Default constructor.

Member Function Documentation

setParams()

void BCP_scheduler::setParams	(	double	OverEstimationStatic,
		double	SwitchToRateThreshold,
		double	TimeRootNodeSolve,
		double	FactorTimeHorizon,
		double	OverEstimationRate,
		double	MaxNodeIdRatio,
		int	MaxNodeIdNum,
		int	MaxSbIdNum,
		int	MinSbIdNum
	)

Method for setting scheduler parameters.

Parameters

OverEstimationStatic	Factor for providing more IDs in static strategy.
SwitchToRateThreshold	When more than SwitchToRateThreshold times the number of strong-branching CPUs are busy, which to rate-based strategy.
TimeRootNodeSolve	Time to solve root node NLP (in secs)
FactorTimeHorizon	This number times TimeRootNodeSolve is used to compute the rates
OverEstimationRate	Factor for providing more IDs in rate-based strategy.
MaxNodeIdRatio	At most this fraction of the total number of ids can be used as a nodeid.
MaxNodeIdNum	At most this many ids can be used as a nodeid.

add_free_ids()

void BCP_scheduler::add_free_ids	(	int	numIds,
		const int *	ids
	)

Pass in a list of freeIds_ to add.

request_sb_ids()

int BCP_scheduler::request_sb_ids	(	int	numIds,
		int *	ids
	)

Request for a number of id's to do some strong branching.

NOTE: ids must be already allocated to be at least numIds size.

Parameters

numIds	: number of ids requested
ids	: filled vector with the number of ids served.

Returns

number of ids served.

release_sb_id()

void BCP_scheduler::release_sb_id

(

int

id

)

Gives back to scheduler an id used for strong branching.

request_node_id()

int BCP_scheduler::request_node_id

(

)

Request an id for processing nodes.

Returns

id number or -1 if none is available.

release_node_id()

void BCP_scheduler::release_node_id

(

int

id

)

Give back an id to scheduler used for processing a node.

has_free_node_id()

bool BCP_scheduler::has_free_node_id ( ) const

inline

Decide if there is an id that can be returned for processin a node.

Definition at line 91 of file BCP_process.hpp.

numNodeIds()

int BCP_scheduler::numNodeIds ( ) const

inline

Return the number of busy LP processes.

Definition at line 95 of file BCP_process.hpp.

maxNodeIds()

int BCP_scheduler::maxNodeIds ( ) const

inline

Return the maximum possible number of busy LP processes.

Definition at line 99 of file BCP_process.hpp.

node_idle()

double BCP_scheduler::node_idle ( int  p )

inline

Return how much time did process p spent idling as a node process.

Definition at line 103 of file BCP_process.hpp.

sb_idle()

double BCP_scheduler::sb_idle ( int  p )

inline

Return how much time did process p spent idling as a SB process.

Definition at line 107 of file BCP_process.hpp.

update_idle_times()

void BCP_scheduler::update_idle_times

(

)

Update idle times with the last idle time.

---

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

• /builddir/build/BUILD/Bcp-1.4.4/src/include/BCP_process.hpp