Detailed Description

Base class for configuration bias (CFB) end regrowth moves.

This class provides methods deleteEndAtom and addEndAtom that delete or add a single atom to a specified end of a linear chain. These are the basic building blocks of CFB moves for flexible linear chains.

Definition at line 31 of file CfbEndBase.h.

#include <CfbEndBase.h>

Inheritance diagram for McMd::CfbEndBase:

Public Member Functions
	CfbEndBase (McSystem &system)
	Constructor. More...

virtual	~CfbEndBase ()
	Destructor. More...

virtual void	readParameters (std::istream &in)
	Read parameter nTrial. More...

void	deleteEndAtom (Atom endPtr, Atom pvtPtr, int bondType, double &rosenbluth, double &energy)
	CFB algorithm for deleting an end atom from a flexible chain. More...

void	addEndAtom (Atom endPtr, Atom pvtPtr, int bondType, double &rosenbluth, double &energy)
	Configuration bias algorithm for adding an atom to a chain end. More...

Public Member Functions inherited from McMd::SystemMove
	SystemMove (McSystem &system)
	Constructor. More...

virtual	~SystemMove ()
	Destructor. More...

Public Member Functions inherited from McMd::McMove
	McMove (Simulation &simulation)
	Constructor. More...

virtual	~McMove ()
	Destructor. More...

virtual void	loadParameters (Serializable::IArchive &ar)
	Load internal state from an archive. More...

virtual void	save (Serializable::OArchive &ar)
	Save internal state to an archive. More...

void	setProbability (double probability)
	Set the probability for this McMove. More...

virtual void	setup ()
	Setup before the beginning of each simulation run. More...

virtual bool	move ()
	Generate, attempt, and accept or reject a Monte Carlo move. More...

double	probability () const
	Return probability for this McMove. More...

long	nAttempt () const
	Return number of moves that have been attempted. More...

long	nAccept () const
	Return number of moves that have been accepted. More...

virtual void	output ()
	Output statistics for this move (called at the end of the simulation) More...

Public Member Functions inherited from Util::ParamComposite
	ParamComposite ()
	Constructor. More...

	ParamComposite (const ParamComposite &other)
	Copy constructor. More...

	ParamComposite (int capacity)
	Constructor. More...

virtual	~ParamComposite ()
	Virtual destructor. More...

void	resetParam ()
	Resets ParamComposite to its empty state. More...

virtual void	readParam (std::istream &in)
	Read the parameter file block. More...

virtual void	readParamOptional (std::istream &in)
	Read optional parameter file block. More...

virtual void	writeParam (std::ostream &out)
	Write all parameters to an output stream. More...

virtual void	load (Serializable::IArchive &ar)
	Load all parameters from an input archive. More...

virtual void	loadOptional (Serializable::IArchive &ar)
	Load an optional ParamComposite. More...

void	saveOptional (Serializable::OArchive &ar)
	Saves isActive flag, and then calls save() iff isActive is true. More...

void	readParamComposite (std::istream &in, ParamComposite &child, bool next=true)
	Add and read a required child ParamComposite. More...

void	readParamCompositeOptional (std::istream &in, ParamComposite &child, bool next=true)
	Add and attempt to read an optional child ParamComposite. More...

template<typename Type >
ScalarParam< Type > &	read (std::istream &in, const char *label, Type &value)
	Add and read a new required ScalarParam < Type > object. More...

template<typename Type >
ScalarParam< Type > &	readOptional (std::istream &in, const char *label, Type &value)
	Add and read a new optional ScalarParam < Type > object. More...

template<typename Type >
CArrayParam< Type > &	readCArray (std::istream &in, const char label, Type value, int n)
	Add and read a required C array parameter. More...

template<typename Type >
CArrayParam< Type > &	readOptionalCArray (std::istream &in, const char label, Type value, int n)
	Add and read an optional C array parameter. More...

template<typename Type >
DArrayParam< Type > &	readDArray (std::istream &in, const char *label, DArray< Type > &array, int n)
	Add and read a required DArray < Type > parameter. More...

template<typename Type >
DArrayParam< Type > &	readOptionalDArray (std::istream &in, const char *label, DArray< Type > &array, int n)
	Add and read an optional DArray < Type > parameter. More...

template<typename Type , int N>
FArrayParam< Type, N > &	readFArray (std::istream &in, const char *label, FArray< Type, N > &array)
	Add and read a required FArray < Type, N > array parameter. More...

template<typename Type , int N>
FArrayParam< Type, N > &	readOptionalFArray (std::istream &in, const char *label, FArray< Type, N > &array)
	Add and read an optional FArray < Type, N > array parameter. More...

template<typename Type >
CArray2DParam< Type > &	readCArray2D (std::istream &in, const char label, Type value, int m, int n, int np)
	Add and read a required CArray2DParam < Type > 2D C-array. More...

template<typename Type >
CArray2DParam< Type > &	readOptionalCArray2D (std::istream &in, const char label, Type value, int m, int n, int np)
	Add and read an optional CArray2DParam < Type > 2D C-array parameter. More...

template<typename Type >
DMatrixParam< Type > &	readDMatrix (std::istream &in, const char *label, DMatrix< Type > &matrix, int m, int n)
	Add and read a required DMatrix < Type > matrix parameter. More...

template<typename Type >
DMatrixParam< Type > &	readOptionalDMatrix (std::istream &in, const char *label, DMatrix< Type > &matrix, int m, int n)
	Add and read an optional DMatrix < Type > matrix parameter. More...

template<typename Type >
DSymmMatrixParam< Type > &	readDSymmMatrix (std::istream &in, const char *label, DMatrix< Type > &matrix, int n)
	Add and read a required symmetrix DMatrix. More...

template<typename Type >
DSymmMatrixParam< Type > &	readOptionalDSymmMatrix (std::istream &in, const char *label, DMatrix< Type > &matrix, int n)
	Add and read an optional DMatrix matrix parameter. More...

Begin &	readBegin (std::istream &in, const char *label, bool isRequired=true)
	Add and read a class label and opening bracket. More...

End &	readEnd (std::istream &in)
	Add and read the closing bracket. More...

Blank &	readBlank (std::istream &in)
	Add and read a new Blank object, representing a blank line. More...

void	loadParamComposite (Serializable::IArchive &ar, ParamComposite &child, bool next=true)
	Add and load a required child ParamComposite. More...

void	loadParamCompositeOptional (Serializable::IArchive &ar, ParamComposite &child, bool next=true)
	Add and load an optional child ParamComposite if isActive. More...

template<typename Type >
ScalarParam< Type > &	loadParameter (Serializable::IArchive &ar, const char *label, Type &value, bool isRequired)
	Add and load a new ScalarParam < Type > object. More...

template<typename Type >
ScalarParam< Type > &	loadParameter (Serializable::IArchive &ar, const char *label, Type &value)
	Add and load new required ScalarParam < Type > object. More...

template<typename Type >
CArrayParam< Type > &	loadCArray (Serializable::IArchive &ar, const char label, Type value, int n, bool isRequired)
	Add a C array parameter and load its elements. More...

template<typename Type >
CArrayParam< Type > &	loadCArray (Serializable::IArchive &ar, const char label, Type value, int n)
	Add and load a required CArrayParam< Type > array parameter. More...

template<typename Type >
DArrayParam< Type > &	loadDArray (Serializable::IArchive &ar, const char *label, DArray< Type > &array, int n, bool isRequired)
	Add an load a DArray < Type > array parameter. More...

template<typename Type >
DArrayParam< Type > &	loadDArray (Serializable::IArchive &ar, const char *label, DArray< Type > &array, int n)
	Add and load a required DArray< Type > array parameter. More...

template<typename Type , int N>
FArrayParam< Type, N > &	loadFArray (Serializable::IArchive &ar, const char *label, FArray< Type, N > &array, bool isRequired)
	Add and load an FArray < Type, N > fixed-size array parameter. More...

template<typename Type , int N>
FArrayParam< Type, N > &	loadFArray (Serializable::IArchive &ar, const char *label, FArray< Type, N > &array)
	Add and load a required FArray < Type > array parameter. More...

template<typename Type >
CArray2DParam< Type > &	loadCArray2D (Serializable::IArchive &ar, const char label, Type value, int m, int n, int np, bool isRequired)
	Add and load a CArray2DParam < Type > C 2D array parameter. More...

template<typename Type >
CArray2DParam< Type > &	loadCArray2D (Serializable::IArchive &ar, const char label, Type value, int m, int n, int np)
	Add and load a required < Type > matrix parameter. More...

template<typename Type >
DMatrixParam< Type > &	loadDMatrix (Serializable::IArchive &ar, const char *label, DMatrix< Type > &matrix, int m, int n, bool isRequired)
	Add and load a DMatrixParam < Type > matrix parameter. More...

template<typename Type >
DMatrixParam< Type > &	loadDMatrix (Serializable::IArchive &ar, const char *label, DMatrix< Type > &matrix, int m, int n)
	Add and load a required DMatrixParam < Type > matrix parameter. More...

template<typename Type >
DSymmMatrixParam< Type > &	loadDSymmMatrix (Serializable::IArchive &ar, const char *label, DMatrix< Type > &matrix, int n, bool isRequired)
	Add and load a symmetric DSymmMatrixParam < Type > matrix parameter. More...

template<typename Type >
DSymmMatrixParam< Type > &	loadDSymmMatrix (Serializable::IArchive &ar, const char *label, DMatrix< Type > &matrix, int n)
	Add and load a required DSymmMatrixParam < Type > matrix parameter. More...

void	addParamComposite (ParamComposite &child, bool next=true)
	Add a child ParamComposite object to the format array. More...

Begin &	addBegin (const char *label)
	Add a Begin object representing a class name and bracket. More...

End &	addEnd ()
	Add a closing bracket. More...

Blank &	addBlank ()
	Create and add a new Blank object, representing a blank line. More...

std::string	className () const
	Get class name string. More...

bool	isRequired () const
	Is this ParamComposite required in the input file? More...

bool	isActive () const
	Is this parameter active? More...

Public Member Functions inherited from Util::ParamComponent
virtual	~ParamComponent ()
	Destructor. More...

void	setIndent (const ParamComponent &parent, bool next=true)
	Set indent level. More...

std::string	indent () const
	Return indent string for this object (string of spaces). More...

template<class Archive >
void	serialize (Archive &ar, const unsigned int version)
	Serialize this ParamComponent as a string. More...

Public Member Functions inherited from Util::Serializable
virtual	~Serializable ()
	Destructor. More...

Public Member Functions inherited from Util::MpiFileIo
	MpiFileIo ()
	Constructor. More...

	MpiFileIo (const MpiFileIo &other)
	Copy constructor. More...

bool	isIoProcessor () const
	Can this processor do file I/O ? More...

void	setIoCommunicator (MPI::Intracomm &communicator)
	Set the communicator. More...

void	clearCommunicator ()
	Clear (nullify) the communicator. More...

bool	hasIoCommunicator () const
	Does this object have an associated MPI communicator? More...

MPI::Intracomm &	ioCommunicator () const
	Get the MPI communicator by reference. More...

Protected Attributes
int	nTrial_
	Actual number of trial positions for each regrown atom. More...

Static Protected Attributes
static const int	MaxTrial_ = 20
	Maximum allowed number of trial positions for a regrown atom. More...

Additional Inherited Members
Public Types inherited from Util::Serializable
typedef BinaryFileOArchive	OArchive
	Type of output archive used by save method. More...

typedef BinaryFileIArchive	IArchive
	Type of input archive used by load method. More...

Static Public Member Functions inherited from Util::ParamComponent
static void	initStatic ()
	Initialize static echo member to false. More...

static void	setEcho (bool echo=true)
	Enable or disable echoing for all subclasses of ParamComponent. More...

static bool	echo ()
	Get echo parameter. More...

Protected Member Functions inherited from McMd::SystemMove
McSystem &	system ()
	Get parent McSystem. More...

Boundary &	boundary ()
	Get Boundary object of parent McSystem. More...

EnergyEnsemble &	energyEnsemble ()
	Get EnergyEnsemble object of parent McSystem. More...

double	boltzmann (double energy)
	Boltzmann weight associated with an energy difference. More...

Protected Member Functions inherited from McMd::McMove
void	incrementNAttempt ()
	Increment the number of attempted moves. More...

void	incrementNAccept ()
	Increment the number of accepted moves. More...

Simulation &	simulation ()
	Get parent Simulation object. More...

Random &	random ()
	Get Random number generator of parent Simulation. More...

void	readProbability (std::istream &in)
	Read the probability from file. More...

Protected Member Functions inherited from Util::ParamComposite
void	setClassName (const char *className)
	Set class name string. More...

void	setIsRequired (bool isRequired)
	Set or unset the isActive flag. More...

void	setIsActive (bool isActive)
	Set or unset the isActive flag. More...

void	setParent (ParamComponent &param, bool next=true)
	Set this to the parent of a child component. More...

void	addComponent (ParamComponent &param, bool isLeaf=true)
	Add a new ParamComponent object to the format array. More...

template<typename Type >
ScalarParam< Type > &	add (std::istream &in, const char *label, Type &value, bool isRequired=true)
	Add a new required ScalarParam < Type > object. More...

template<typename Type >
CArrayParam< Type > &	addCArray (std::istream &in, const char label, Type value, int n, bool isRequired=true)
	Add (but do not read) a required C array parameter. More...

template<typename Type >
DArrayParam< Type > &	addDArray (std::istream &in, const char *label, DArray< Type > &array, int n, bool isRequired=true)
	Add (but do not read) a DArray < Type > parameter. More...

template<typename Type , int N>
FArrayParam< Type, N > &	addFArray (std::istream &in, const char *label, FArray< Type, N > &array, bool isRequired=true)
	Add (but do not read) a FArray < Type, N > array parameter. More...

template<typename Type >
CArray2DParam< Type > &	addCArray2D (std::istream &in, const char label, Type value, int m, int n, int np, bool isRequired=true)
	Add (but do not read) a CArray2DParam < Type > 2D C-array. More...

template<typename Type >
DMatrixParam< Type > &	addDMatrix (std::istream &in, const char *label, DMatrix< Type > &matrix, int m, int n, bool isRequired=true)
	Add and read a required DMatrix < Type > matrix parameter. More...

Protected Member Functions inherited from Util::ParamComponent
	ParamComponent ()
	Constructor. More...

	ParamComponent (const ParamComponent &other)
	Copy constructor. More...

Constructor & Destructor Documentation

McMd::CfbEndBase::CfbEndBase ( McSystem & system )

Constructor.

Definition at line 29 of file CfbEndBase.cpp.

References McMd::McSystem::hasDihedralPotential(), and UTIL_THROW.

McMd::CfbEndBase::~CfbEndBase ( )

virtual

Destructor.

Definition at line 44 of file CfbEndBase.cpp.

Member Function Documentation

void McMd::CfbEndBase::readParameters ( std::istream & in )

virtual

Read parameter nTrial.

This function is used only for testing. Subclasses read the protected member nTrial directly.

Reimplemented from McMd::McMove.

Reimplemented in McMd::CfbRebridgeBase, McMd::CfbRingRebridgeMove, McMd::CfbReptationMove, McMd::CfbRebridgeMove, McMd::CfbEndMove, and McMd::CfbDoubleRebridgeMove.

Definition at line 50 of file CfbEndBase.cpp.

References MaxTrial_, nTrial_, and UTIL_THROW.

void McMd::CfbEndBase::deleteEndAtom	(	Atom *	endPtr,
		Atom *	pvtPtr,
		int	bondType,
		double &	rosenbluth,
		double &	energy
	)

CFB algorithm for deleting an end atom from a flexible chain.

This function computes the energy of an end atom and a Rosenbluth factor for removing it. It does not remove the end atom from the system cell list.

Upon return:

rosenbluth is the nonbonded Rosenblush factor for the deleted atom, i.e., the sum of Boltzmann factors from nonbonded pair interactions for the initial position and nTrial_ - 1 trials.
energy is the total energy (bonded + nonbonded) of the end atom before it was deleted.

Parameters

endPtr	ptr to end atom, which we attempt to remove
pvtPtr	ptr to atom next to end, or end after removal
bondType	type of bond connecting pvt and end atoms
rosenbluth	nonbonded Rosenbluth factor of deleted atom (out)
energy	total potential energy of deleted atom (out)

Definition at line 62 of file CfbEndBase.cpp.

References Util::Vector::add(), McMd::McSystem::anglePotential(), McMd::Group< NAtom >::atom(), McMd::McPairPotential::atomEnergy(), McMd::ExternalPotential::atomEnergy(), McMd::SystemMove::boltzmann(), McMd::McSystem::bondPotential(), McMd::SystemMove::boundary(), Simp::OrthorhombicBoundary::distanceSq(), Util::Vector::dot(), McMd::BondPotential::energy(), McMd::AnglePotential::energy(), McMd::McSystem::externalPotential(), McMd::getAtomAngles(), nTrial_, McMd::McSystem::pairPotential(), McMd::Atom::position(), McMd::McMove::random(), Simp::OrthorhombicBoundary::shift(), Util::FSArray< Data, Capacity >::size(), McMd::SystemMove::system(), McMd::Group< NAtom >::typeId(), and Util::Random::unitVector().

Referenced by McMd::CfbRebridgeBase::deleteSequence(), McMd::CfbEndMove::move(), McMd::CfbReptationMove::move(), and McMd::CfbRingRebridgeMove::move().

void McMd::CfbEndBase::addEndAtom	(	Atom *	endPtr,
		Atom *	pvtPtr,
		int	bondType,
		double &	rosenbluth,
		double &	energy
	)

Configuration bias algorithm for adding an atom to a chain end.

This function generates and computes Rosenbluth factors for nTrial trial positions, chooses one, updates the atomic position. It does not add the end atom to the system cell list.

Upon return:

rosenbluth is the nonbonded Rosenblush factor for the added atom, i.e., the sum of Boltzmann factors from nonbonded pair interactions for all nTrial_ trial positions.
energy is the total energy (bonded + nonbonded) of the new end atom in its chosen position.

Parameters

endPtr	ptr to new end atom, which we attempt to add
pvtPtr	end atom of current chain, next to end
bondType	type of bond connecting pvt and end atoms
rosenbluth	Rosenbluth factor of added atom (out)
energy	potential energy of deleted atom (out)