ScipParaObjCommPointHdlr Class Reference

#include <scipParaObjCommPointHdlr.h>

Inheritance diagram for ScipParaObjCommPointHdlr:

Public Member Functions
	ScipParaObjCommPointHdlr (UG::ParaComm *comm, ScipParaSolver *solver, ScipParaObjLimitUpdator *updator)
	ScipParaObjCommPointHdlr (UG::ParaComm *comm, ScipParaSolver *solver, SCIP *subScip, SCIP *inOriginalScip, bool inCloned)
	~ScipParaObjCommPointHdlr ()
void	resetCommPointHdlr ()
ObjCloneable *	clone (SCIP *scip) const
SCIP_Bool	iscloneable (void) const
bool	isColne ()
void	setOriginalNodeSelectionStrategy ()
virtual SCIP_RETCODE	scip_free (SCIP *scip, SCIP_EVENTHDLR *eventhdlr)
virtual SCIP_RETCODE	scip_init (SCIP *scip, SCIP_EVENTHDLR *eventhdlr)
void	issueInterrupt ()
bool	isInterrupting ()
virtual SCIP_RETCODE	scip_exit (SCIP *scip, SCIP_EVENTHDLR *eventhdlr)
virtual SCIP_RETCODE	scip_initsol (SCIP *scip, SCIP_EVENTHDLR *eventhdlr)
virtual SCIP_RETCODE	scip_exitsol (SCIP *scip, SCIP_EVENTHDLR *eventhdlr)
virtual SCIP_RETCODE	scip_delete (SCIP *scip, SCIP_EVENTHDLR *eventhdlr, SCIP_EVENTDATA **eventdata)
virtual SCIP_RETCODE	scip_exec (SCIP *scip, SCIP_EVENTHDLR *eventhdlr, SCIP_EVENT *event, SCIP_EVENTDATA *eventdata)

Private Member Functions
void	processNewSolution (SCIP *scip, SCIP_EVENT *event)
bool	checkRootNodeSolvabilityAndSendParaNode (SCIP *scip)
void	sendNode (SCIP *scip, SCIP_NODE *node, int depth, int nBranchVars, SCIP_VAR **branchVars, SCIP_Real *branchBounds, SCIP_BOUNDTYPE *boundTypes)
void	changeSearchStrategy (SCIP *scip)
bool	ifFeasibleInOriginalProblem (SCIP *scip, int nNewBranchVars, SCIP_VAR **newBranchVars, SCIP_Real *newBranchBounds)

Private Attributes
UG::ParaComm *	paraComm
ScipParaSolver *	scipParaSolver
ScipParaObjLimitUpdator *	scipParaObjLimitUpdator
SCIP *	scipToCheckRootSolvability
SCIP *	originalScip
bool	needToSendNode
bool	originalSelectionStrategy
SCIP_Longint	previousNNodesSolved
SCIP_Longint	previousLpIter
const char *	changeNodeSelName
bool	cloned
bool	interrupting
bool	startedCollectingNodesForInitialRampUp

Detailed Description

C++ wrapper object for event handlers

Definition at line 54 of file scipParaObjCommPointHdlr.h.

Constructor & Destructor Documentation

ScipParaObjCommPointHdlr() [1/2]

ScipParaObjCommPointHdlr	(	UG::ParaComm *	comm,
		ScipParaSolver *	solver,
		ScipParaObjLimitUpdator *	updator
	)

Definition at line 80 of file scipParaObjCommPointHdlr.h.

References ScipParaObjCommPointHdlr::changeNodeSelName, ScipParaObjCommPointHdlr::cloned, UG::CollectOnce, ScipParaInstance::createProblem(), ParaParamSet::getBoolParamValue(), ScipParaSolver::getChangeNodeSelName(), ParaParamSet::getIntParamValue(), BbParaSolver::getParaInstance(), BbParaSolver::getParaParamSet(), UG::InstanceTransferMethod, UG::NoPreprocessingInLC, UG::RampUpPhaseProcess, ParaSCIP::RootNodeSolvabilityCheck, ScipParaObjCommPointHdlr::scipParaSolver, ScipParaObjCommPointHdlr::scipToCheckRootSolvability, ScipParaObjCommPointHdlr::startedCollectingNodesForInitialRampUp, and UG::UseRootNodeCuts.

Referenced by ScipParaObjCommPointHdlr::clone().

ScipParaObjCommPointHdlr() [2/2]

ScipParaObjCommPointHdlr	(	UG::ParaComm *	comm,
		ScipParaSolver *	solver,
		SCIP *	subScip,
		SCIP *	inOriginalScip,
		bool	inCloned
	)

Definition at line 116 of file scipParaObjCommPointHdlr.h.

References UG::CollectOnce, ParaParamSet::getBoolParamValue(), ParaParamSet::getIntParamValue(), BbParaSolver::getParaParamSet(), UG::RampUpPhaseProcess, ScipParaObjCommPointHdlr::scipParaSolver, and ScipParaObjCommPointHdlr::startedCollectingNodesForInitialRampUp.

~ScipParaObjCommPointHdlr()

~ScipParaObjCommPointHdlr

(

)

destructor

Definition at line 136 of file scipParaObjCommPointHdlr.h.

References ScipParaObjCommPointHdlr::scipToCheckRootSolvability.

Member Function Documentation

changeSearchStrategy()

void changeSearchStrategy ( SCIP *  scip )

private

Definition at line 1297 of file scipParaObjCommPointHdlr.cpp.

References ScipParaObjCommPointHdlr::changeNodeSelName, ScipParaObjCommPointHdlr::originalSelectionStrategy, ScipParaObjCommPointHdlr::scipParaSolver, and ScipParaSolver::setNPreviousNodesLeft().

Referenced by ScipParaObjCommPointHdlr::scip_exec().

checkRootNodeSolvabilityAndSendParaNode()

bool checkRootNodeSolvabilityAndSendParaNode ( SCIP *  scip )

private

check root node solvability

remove the node sent from SCIP environment

remove the node sent from SCIP environment

Definition at line 1006 of file scipParaObjCommPointHdlr.cpp.

References UG::AllBoundChangesTransfer, BbParaSolver::countInPrecheckSolvedParaNodes(), DEF_SCIP_PARA_COMM, DEFAULT_NUM_EPSILON, EPSGT, EPSLT, ParaParamSet::getBoolParamValue(), BbParaSolver::getGlobalBestIncumbentValue(), ScipParaSolver::getNOrgVars(), ScipParaSolver::getOriginalIndex(), BbParaSolver::getParaParamSet(), ScipParaObjCommPointHdlr::ifFeasibleInOriginalProblem(), ScipParaSolver::isCopyIncreasedVariables(), BbParaSolver::isRacingStage(), MINEPSILON, ScipParaObjCommPointHdlr::needToSendNode, UG::NoAllBoundChangesTransferInRacing, ScipParaObjCommPointHdlr::paraComm, ParaSCIP::RootNodeSolvabilityCheck, BbParaSolver::saveIfImprovedSolutionWasFound(), ScipParaObjCommPointHdlr::scipParaSolver, ScipParaObjCommPointHdlr::scipToCheckRootSolvability, ScipParaObjCommPointHdlr::sendNode(), and THROW_LOGICAL_ERROR2.

Referenced by ScipParaObjCommPointHdlr::scip_exec().

clone()

ObjCloneable * clone

(

SCIP *

scip

)

const

clone method, used to copy plugins which are not constraint handlers or variable pricer plugins

Parameters

scip	SCIP data structure

Definition at line 154 of file scipParaObjCommPointHdlr.h.

References ScipParaSolver::getScip(), ScipParaObjCommPointHdlr::paraComm, ScipParaObjCommPointHdlr::ScipParaObjCommPointHdlr(), and ScipParaObjCommPointHdlr::scipParaSolver.

ifFeasibleInOriginalProblem()

bool ifFeasibleInOriginalProblem ( SCIP *  scip, int  nNewBranchVars, SCIP_VAR **  newBranchVars, SCIP_Real *  newBranchBounds  )

private

Definition at line 1325 of file scipParaObjCommPointHdlr.cpp.

References ScipParaSolver::getNOrgVars(), ScipParaSolver::getOrgVarLb(), ScipParaSolver::getOrgVarUb(), and ScipParaObjCommPointHdlr::scipParaSolver.

Referenced by ScipParaObjCommPointHdlr::checkRootNodeSolvabilityAndSendParaNode().

iscloneable()

SCIP_Bool iscloneable

(

void

)

const

returns whether the objective plugin is copyable

Definition at line 161 of file scipParaObjCommPointHdlr.h.

isColne()

bool isColne

(

)

Definition at line 169 of file scipParaObjCommPointHdlr.h.

References ScipParaObjCommPointHdlr::cloned.

isInterrupting()

bool isInterrupting

(

)

Definition at line 241 of file scipParaObjCommPointHdlr.h.

References ScipParaObjCommPointHdlr::interrupting.

Referenced by ScipParaSolver::isInterrupting().

issueInterrupt()

void issueInterrupt

(

)

Definition at line 236 of file scipParaObjCommPointHdlr.h.

References ScipParaObjCommPointHdlr::interrupting.

Referenced by ScipParaSolver::issueInterruptSolve().

processNewSolution()

void processNewSolution ( SCIP *  scip, SCIP_EVENT *  event  )

private

Parameters

scip	SCIP data structure
event	event to process

Definition at line 58 of file scipParaObjCommPointHdlr.cpp.

References DEF_SCIP_PARA_COMM, ScipParaSolver::getOriginalIndex(), ScipParaSolver::isCopyIncreasedVariables(), ScipParaObjCommPointHdlr::paraComm, BbParaSolver::saveIfImprovedSolutionWasFound(), and ScipParaObjCommPointHdlr::scipParaSolver.

Referenced by ScipParaObjCommPointHdlr::scip_exec().

resetCommPointHdlr()

void resetCommPointHdlr

(

)

Definition at line 145 of file scipParaObjCommPointHdlr.h.

References ScipParaObjCommPointHdlr::interrupting, ScipParaObjCommPointHdlr::needToSendNode, ScipParaObjCommPointHdlr::originalSelectionStrategy, ScipParaObjCommPointHdlr::scipParaSolver, and ScipParaSolver::setOriginalPriority().

Referenced by ScipParaSolver::createSubproblem().

scip_delete()

virtual SCIP_RETCODE scip_delete ( SCIP *  scip, SCIP_EVENTHDLR *  eventhdlr, SCIP_EVENTDATA **  eventdata  )

virtual

frees specific constraint data

Parameters

scip	SCIP data structure
eventhdlr	the event handler itself
eventdata	pointer to the event data to free

Definition at line 284 of file scipParaObjCommPointHdlr.h.

scip_exec()

SCIP_RETCODE scip_exec ( SCIP *  scip, SCIP_EVENTHDLR *  eventhdlr, SCIP_EVENT *  event, SCIP_EVENTDATA *  eventdata  )

virtual

execution method of event handler

Processes the event. The method is called every time an event occurs, for which the event handler is responsible. Event handlers may declare themselves resposible for events by calling the corresponding SCIPcatch...() method. This method creates an event filter object to point to the given event handler and event data.

set cutoff value

if root node is solved, set root node time

when a problem is solved at root, its root node process time is set on paraSolver main loop

Parameters

scip	SCIP data structure
eventhdlr	the event handler itself
event	event to process
eventdata	user data for the event

Definition at line 121 of file scipParaObjCommPointHdlr.cpp.

References UG::AllowableRegressionRatioInMerging, ScipParaSolver::allowCollectingMode(), UG::BreakFirstSubtree, ScipParaObjCommPointHdlr::changeSearchStrategy(), ScipParaObjCommPointHdlr::checkRootNodeSolvabilityAndSendParaNode(), ScipParaObjCommPointHdlr::cloned, UG::CommunicateTighterBoundsInRacing, UG::ControlCollectingModeOnSolverSide, DEF_SCIP_PARA_COMM, UG::Deterministic, UG::DualBoundGainBranchRatio, UG::DualBoundGainTest, UG::EventWeightedDeterministic, UG::FinalCheckpointGeneratingTime, UG::GenerateReducedCheckpointFiles, BbParaSolver::getAggresivePresolvingDepth(), BbParaSolver::getAggresivePresolvingStopDepth(), BbParaSolver::getAverageDualBoundGain(), BbParaSolver::getBigDualGapSubtreeHandlingStrategy(), ParaParamSet::getBoolParamValue(), BbParaSolver::getBoundGapForCollectingMode(), BbParaSolver::getBoundGapForStopSolving(), BbParaSolver::getCurrentNode(), BbParaSolver::getCurrentSolivingNodeMergingStatus(), BbParaSolver::getCurrentSolvingNodeInitialDualBound(), ParaSolver::getDeterministicTimer(), BbParaNode::getDualBoundValue(), ParaDeterministicTimer::getElapsedTime(), BbParaSolver::getElapsedTimeOfNodeSolving(), BbParaSolver::getGlobalBestIncumbentValue(), ParaParamSet::getIntParamValue(), BbParaSolver::getLcBestDualBoundValue(), BbParaSolver::getNSendInCollectingMode(), BbParaSolver::getNStopSolvingMode(), ScipParaSolver::getOffsetDepth(), ScipParaSolver::getOrgVarLb(), ScipParaSolver::getOrgVarUb(), ScipParaSolver::getOriginalIndex(), ScipParaSolver::getOriginalPriority(), BbParaSolver::getParaParamSet(), ParaSolver::getPreviousCommTime(), ScipParaSolver::getProbIndex(), BbParaSolver::getRank(), ParaComm::getRank(), ParaParamSet::getRealParamValue(), ScipParaSolver::getSimplexIter(), BbParaSolver::getSubMipDepth(), BbParaSolver::getTargetBound(), BbParaSolver::getThresholdValue(), ScipParaSolver::getTightenedVarLb(), ScipParaSolver::getTightenedVarUb(), BbParaSolver::getTimeStopSolvingMode(), ScipParaObjCommPointHdlr::interrupting, BbParaSolver::iReceiveMessages(), BbParaSolver::isAggressiveCollecting(), BbParaSolver::isAggressivePresolvingSpecified(), BbParaSolver::isAnotherNodeIsRequested(), BbParaSolver::isBreaking(), BbParaSolver::isCollecingInterrupt(), BbParaSolver::isCollectingAllNodes(), ScipParaSolver::isCollectingModeProhibited(), BbParaSolver::isDualBoundGainTestNeeded(), BbParaSolver::isEnoughGainObtained(), BbParaSolver::isGivenGapReached(), BbParaSolver::isGlobalIncumbentUpdated(), BbParaSolver::isInCollectingMode(), ScipParaSolver::isInterrupting(), BbParaSolver::isManyNodesCollectionRequested(), ScipParaSolver::isOriginalIndeciesMap(), ScipParaSolver::isProbIndeciesMap(), BbParaSolver::isRacingInterruptRequested(), BbParaSolver::isRacingRampUp(), BbParaSolver::isRacingStage(), ParaSolver::isRacingWinner(), ParaSolver::isRampUp(), ParaTask::isRootTask(), ParaSolver::isTerminationRequested(), BbParaSolver::isTransferLimitReached(), UG::KeepNodesDepth, ScipParaObjCommPointHdlr::needToSendNode, BbParaSolver::newParaNodeExists(), UG::NoAlternateSolving, UG::NotificationInterval, BbParaSolver::notificationIsNecessary(), UG::NumberOfNodesKeepingInRootSolver, ScipParaObjCommPointHdlr::originalScip, ScipParaObjCommPointHdlr::originalSelectionStrategy, PARA_COMM_CALL, UG::ParaBYTE, ScipParaObjCommPointHdlr::paraComm, UG::ParaDOUBLE, UG::ParaINT, BbParaSolver::passToken(), ScipParaObjCommPointHdlr::previousLpIter, ScipParaObjCommPointHdlr::previousNNodesSolved, ScipParaObjCommPointHdlr::processNewSolution(), UG::RampUpPhaseProcess, REALABS, BbParaSolver::resetBreakingInfo(), ScipParaObjCommPointHdlr::scipParaObjLimitUpdator, ScipParaObjCommPointHdlr::scipParaSolver, ParaComm::send(), BbParaSolver::sendAnotherNodeRequest(), BbParaSolver::sendLocalSolution(), BbParaSolver::sendSolverState(), BbParaSolver::setNotEnoughGain(), ScipParaSolver::setNPreviousNodesLeft(), ParaSolver::setPreviousCommTime(), BbParaSolver::setRootNodeSimplexIter(), BbParaSolver::setRootNodeTime(), BbParaSolver::setSendBackAllNodes(), ScipParaSolver::setTightenedVarLb(), ScipParaSolver::setTightenedVarUb(), ScipParaObjCommPointHdlr::startedCollectingNodesForInitialRampUp, UG::TagAllowToBeInCollectingMode, UG::TagLbBoundTightenedBound, UG::TagLbBoundTightenedIndex, UG::TagUbBoundTightenedBound, UG::TagUbBoundTightenedIndex, THROW_LOGICAL_ERROR2, ScipParaObjLimitUpdator::update(), ParaDeterministicTimer::update(), ParaSolver::updatePendingSolution(), BbParaSolver::waitMessageIfNecessary(), and BbParaSolver::waitToken().

scip_exit()

virtual SCIP_RETCODE scip_exit ( SCIP *  scip, SCIP_EVENTHDLR *  eventhdlr  )

virtual

deinitialization method of event handler (called before transformed problem is freed)

Parameters

scip	SCIP data structure
eventhdlr	the event handler itself

Definition at line 247 of file scipParaObjCommPointHdlr.h.

scip_exitsol()

virtual SCIP_RETCODE scip_exitsol ( SCIP *  scip, SCIP_EVENTHDLR *  eventhdlr  )

virtual

solving process deinitialization method of event handler (called before branch and bound process data is freed)

This method is called before the branch and bound process is freed. The event handler should use this call to clean up its branch and bound data.

Parameters

scip	SCIP data structure
eventhdlr	the event handler itself

Definition at line 275 of file scipParaObjCommPointHdlr.h.

scip_free()

virtual SCIP_RETCODE scip_free ( SCIP *  scip, SCIP_EVENTHDLR *  eventhdlr  )

virtual

destructor of event handler to free user data (called when SCIP is exiting)

Parameters

scip	SCIP data structure
eventhdlr	the event handler itself

Definition at line 178 of file scipParaObjCommPointHdlr.h.

scip_init()

virtual SCIP_RETCODE scip_init ( SCIP *  scip, SCIP_EVENTHDLR *  eventhdlr  )

virtual

initialization method of event handler (called after problem was transformed)

Parameters

scip	SCIP data structure
eventhdlr	the event handler itself

Definition at line 187 of file scipParaObjCommPointHdlr.h.

References ScipParaObjCommPointHdlr::cloned, and ScipParaObjCommPointHdlr::interrupting.

scip_initsol()

virtual SCIP_RETCODE scip_initsol ( SCIP *  scip, SCIP_EVENTHDLR *  eventhdlr  )

virtual

solving process initialization method of event handler (called when branch and bound process is about to begin)

This method is called when the presolving was finished and the branch and bound process is about to begin. The event handler may use this call to initialize its branch and bound specific data.

Parameters

scip	SCIP data structure
eventhdlr	the event handler itself

Definition at line 262 of file scipParaObjCommPointHdlr.h.

sendNode()

void sendNode ( SCIP *  scip, SCIP_NODE *  node, int  depth, int  nBranchVars, SCIP_VAR **  branchVars, SCIP_Real *  branchBounds, SCIP_BOUNDTYPE *  boundTypes  )

private

remove the node sent from SCIP environment

Definition at line 1229 of file scipParaObjCommPointHdlr.cpp.

References DEF_SCIP_PARA_COMM, BbParaSolver::getRank(), ParaComm::getRank(), ScipParaObjCommPointHdlr::paraComm, ScipParaObjCommPointHdlr::scipParaSolver, and BbParaSolver::sendParaNode().

Referenced by ScipParaObjCommPointHdlr::checkRootNodeSolvabilityAndSendParaNode().

setOriginalNodeSelectionStrategy()

void setOriginalNodeSelectionStrategy

(

)

Definition at line 171 of file scipParaObjCommPointHdlr.h.

References ScipParaObjCommPointHdlr::originalSelectionStrategy, ScipParaObjCommPointHdlr::scipParaSolver, and ScipParaSolver::setOriginalPriority().

Referenced by ScipParaSolver::setOriginalNodeSelectionStrategy().

Member Data Documentation

changeNodeSelName

const char* changeNodeSelName

private

Definition at line 66 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::changeSearchStrategy(), and ScipParaObjCommPointHdlr::ScipParaObjCommPointHdlr().

cloned

bool cloned

private

Definition at line 68 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::isColne(), ScipParaObjCommPointHdlr::scip_exec(), ScipParaObjCommPointHdlr::scip_init(), and ScipParaObjCommPointHdlr::ScipParaObjCommPointHdlr().

interrupting

bool interrupting

private

Definition at line 69 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::isInterrupting(), ScipParaObjCommPointHdlr::issueInterrupt(), ScipParaObjCommPointHdlr::resetCommPointHdlr(), ScipParaObjCommPointHdlr::scip_exec(), and ScipParaObjCommPointHdlr::scip_init().

needToSendNode

bool needToSendNode

private

Definition at line 61 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::checkRootNodeSolvabilityAndSendParaNode(), ScipParaObjCommPointHdlr::resetCommPointHdlr(), and ScipParaObjCommPointHdlr::scip_exec().

originalScip

SCIP* originalScip

private

Definition at line 60 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::scip_exec().

originalSelectionStrategy

bool originalSelectionStrategy

private

Definition at line 62 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::changeSearchStrategy(), ScipParaObjCommPointHdlr::resetCommPointHdlr(), ScipParaObjCommPointHdlr::scip_exec(), and ScipParaObjCommPointHdlr::setOriginalNodeSelectionStrategy().

paraComm

UG::ParaComm* paraComm

private

Definition at line 56 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::checkRootNodeSolvabilityAndSendParaNode(), ScipParaObjCommPointHdlr::clone(), ScipParaObjCommPointHdlr::processNewSolution(), ScipParaObjCommPointHdlr::scip_exec(), and ScipParaObjCommPointHdlr::sendNode().

previousLpIter

SCIP_Longint previousLpIter

private

Definition at line 65 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::scip_exec().

previousNNodesSolved

SCIP_Longint previousNNodesSolved

private

Definition at line 64 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::scip_exec().

scipParaObjLimitUpdator

ScipParaObjLimitUpdator* scipParaObjLimitUpdator

private

Definition at line 58 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::scip_exec().

scipParaSolver

ScipParaSolver* scipParaSolver

private

Definition at line 57 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::changeSearchStrategy(), ScipParaObjCommPointHdlr::checkRootNodeSolvabilityAndSendParaNode(), ScipParaObjCommPointHdlr::clone(), ScipParaObjCommPointHdlr::ifFeasibleInOriginalProblem(), ScipParaObjCommPointHdlr::processNewSolution(), ScipParaObjCommPointHdlr::resetCommPointHdlr(), ScipParaObjCommPointHdlr::scip_exec(), ScipParaObjCommPointHdlr::ScipParaObjCommPointHdlr(), ScipParaObjCommPointHdlr::sendNode(), and ScipParaObjCommPointHdlr::setOriginalNodeSelectionStrategy().

scipToCheckRootSolvability

SCIP* scipToCheckRootSolvability

private

Definition at line 59 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::checkRootNodeSolvabilityAndSendParaNode(), ScipParaObjCommPointHdlr::ScipParaObjCommPointHdlr(), and ScipParaObjCommPointHdlr::~ScipParaObjCommPointHdlr().

startedCollectingNodesForInitialRampUp

bool startedCollectingNodesForInitialRampUp

private

Definition at line 70 of file scipParaObjCommPointHdlr.h.

Referenced by ScipParaObjCommPointHdlr::scip_exec(), and ScipParaObjCommPointHdlr::ScipParaObjCommPointHdlr().