Util::MpiLoader< IArchive > Class Template Reference

Detailed Description

template<class IArchive>
class Util::MpiLoader< IArchive >

Provides methods for MPI-aware loading of data from input archive.

Each MpiLoader is associated with an IArchive input archive, and with a MpiFileIo, which are passed as arguments to the constructor. The MpiFileIo argument is often a ParamComposite, which is derived from MpiFileIo.

The "load" function templates all load data from the archive and (if appropriate) broadcast data among processors. If MPI is not enabled (i.e., if UTIL_MPI is not defined), then the data is simply loaded from the archive. If MPI is enabled and a parameter communicator is set, data is loaded from the archive by the ioProcessor and then broadcast to all other processors in the IO communicator. If MPI is enabled but no parameter communicator is set, every processor loads data independently.

Definition at line 43 of file MpiLoader.h.

#include <MpiLoader.h>

Public Member Functions
	MpiLoader (MpiFileIo &mpiFileIo, IArchive &archive)
	Constructor. More...
template<typename Data >
void	load (Data &value)
	Load and broadcast a single Data value. More...
template<typename Data >
void	load (Data *value, int n)
	Load and broadcast a C array. More...
template<typename Data >
void	load (DArray< Data > &array, int n)
	Load and broadcast a DArray < Data > container. More...
template<typename Data , int N>
void	load (FArray< Data, N > &array)
	Load and broadcast an FArray <Data , N > object. More...
template<typename Data >
void	load (Data *value, int m, int n, int np)
	Load and broadcast a 2D CArray of Data objects. More...
template<typename Data >
void	load (DMatrix< Data > &matrix, int m, int n)
	Load and broadcast a DMatrix<Data> object. More...

Constructor & Destructor Documentation

template<typename IArchive >

Util::MpiLoader< IArchive >::MpiLoader	(	MpiFileIo &	mpiFileIo,
		IArchive &	archive
	)

Constructor.

Parameters

mpiFileIo	associated MpiFileIo object
archive	input archive from which data will be loaded

Definition at line 127 of file MpiLoader.h.

Member Function Documentation

template<typename IArchive >

template<typename Data >

void Util::MpiLoader< IArchive >::load

(

Data &

value

)

Load and broadcast a single Data value.

Parameters

value

reference to a Data

Definition at line 137 of file MpiLoader.h.

References Util::MpiFileIo::hasIoCommunicator(), Util::MpiFileIo::ioCommunicator(), and Util::MpiFileIo::isIoProcessor().

Referenced by DdMd::NvtIntegrator::loadParameters(), DdMd::NphIntegrator::loadParameters(), DdMd::NptIntegrator::loadParameters(), DdMd::OutputStressTensor::loadParameters(), DdMd::OutputEnergy::loadParameters(), DdMd::OutputTemperature::loadParameters(), DdMd::OutputBoxdim::loadParameters(), DdMd::OutputPressure::loadParameters(), DdMd::VirialStressTensor::loadParameters(), DdMd::LogEnergy::loadParameters(), DdMd::ConfigWriter::loadParameters(), DdMd::GroupStorage< N >::loadParameters(), and Tools::TrajectoryWriter::readParameters().

template<typename IArchive >

template<typename Data >

void Util::MpiLoader< IArchive >::load	(	Data *	value,
		int	n
	)

Load and broadcast a C array.

Parameters

value	pointer to array
n	number of elements

Definition at line 154 of file MpiLoader.h.

References Util::MpiFileIo::hasIoCommunicator(), Util::MpiFileIo::ioCommunicator(), and Util::MpiFileIo::isIoProcessor().

template<typename IArchive >

template<typename Data >

void Util::MpiLoader< IArchive >::load	(	DArray< Data > &	array,
		int	n
	)

Load and broadcast a DArray < Data > container.

Parameters

array	DArray object
n	number of elements

Definition at line 174 of file MpiLoader.h.

References Util::MpiFileIo::hasIoCommunicator(), Util::MpiFileIo::ioCommunicator(), Util::MpiFileIo::isIoProcessor(), and UTIL_THROW.

template<typename IArchive >

template<typename Data , int N>

void Util::MpiLoader< IArchive >::load

(

FArray< Data, N > &

array

)

Load and broadcast an FArray <Data , N > object.

Parameters

array

FArray object to be loaded

Definition at line 194 of file MpiLoader.h.

References Util::MpiFileIo::hasIoCommunicator(), Util::MpiFileIo::ioCommunicator(), and Util::MpiFileIo::isIoProcessor().

template<typename IArchive >

template<typename Data >

void Util::MpiLoader< IArchive >::load	(	Data *	value,
		int	m,
		int	n,
		int	np
	)

Load and broadcast a 2D CArray of Data objects.

Loads m rows of n elements into array declared as Data array[][np].

Parameters

value	pointer to first element or row in array
m	logical number of rows (1st dimension)
n	logical number of columns (2nd dimension)
np	physcial number of columns (elements allocated per row)

Definition at line 214 of file MpiLoader.h.

References Util::MpiFileIo::hasIoCommunicator(), Util::MpiFileIo::ioCommunicator(), and Util::MpiFileIo::isIoProcessor().

template<typename IArchive >

template<typename Data >

void Util::MpiLoader< IArchive >::load	(	DMatrix< Data > &	matrix,
		int	m,
		int	n
	)

Load and broadcast a DMatrix<Data> object.

Parameters

matrix	DMatrix object
m	number of rows (1st dimension)
n	number of columns (2nd dimension)

Definition at line 237 of file MpiLoader.h.

References Util::MpiFileIo::hasIoCommunicator(), Util::MpiFileIo::ioCommunicator(), and Util::MpiFileIo::isIoProcessor().

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

• MpiLoader.h