This writer uses MPI I/O to dump simulation snapshots to disk. More...

#include <mpiiowriter.h>

Inherits Clonable< Writer< CELL_TYPE >, MPIIOWriter< CELL_TYPE > >.

Collaboration diagram for LibGeoDecomp::MPIIOWriter< CELL_TYPE >:

Public Types
typedef Writer< CELL_TYPE > ::GridType	GridType
typedef Writer< CELL_TYPE > ::Topology	Topology
Public Member Functions
	MPIIOWriter (const std::string &prefix, const unsigned period, const unsigned maxSteps, const MPI_Comm &communicator=MPI_COMM_WORLD, MPI_Datatype mpiDatatype=Typemaps::lookup< CELL_TYPE >())
virtual void	stepFinished (const GridType &grid, unsigned step, WriterEvent event)
	is called back from sim after each simulation step.
Static Public Attributes
static const int	DIM = Topology::DIM
Private Member Functions
std::string	filename (const unsigned &step) const
Private Attributes
unsigned	maxSteps
MPI_Comm	comm
MPI_Datatype	datatype
Friends
class	MPIIOWriterTest
class	MPIIOInitializerTest

Detailed Description

template<typename CELL_TYPE>
class LibGeoDecomp::MPIIOWriter< CELL_TYPE >

This writer uses MPI I/O to dump simulation snapshots to disk.

Use MPIIOInitializer for restarting from a checkpoint. Also consider ParallelMPIIOWriter for large-scale runs.

Member Typedef Documentation

template<typename CELL_TYPE >

typedef Writer<CELL_TYPE>::GridType LibGeoDecomp::MPIIOWriter< CELL_TYPE >::GridType

Reimplemented from LibGeoDecomp::Writer< CELL_TYPE >.

template<typename CELL_TYPE >

typedef Writer<CELL_TYPE>::Topology LibGeoDecomp::MPIIOWriter< CELL_TYPE >::Topology

Reimplemented from LibGeoDecomp::Writer< CELL_TYPE >.

Constructor & Destructor Documentation

template<typename CELL_TYPE >

LibGeoDecomp::MPIIOWriter< CELL_TYPE >::MPIIOWriter	(	const std::string &	prefix,
		const unsigned	period,
		const unsigned	maxSteps,
		const MPI_Comm &	communicator = `MPI_COMM_WORLD`,
		MPI_Datatype	mpiDatatype = `Typemaps::lookup<CELL_TYPE>()`
	)			`[inline]`

Member Function Documentation

template<typename CELL_TYPE >

std::string LibGeoDecomp::MPIIOWriter< CELL_TYPE >::filename ( const unsigned & step ) const [inline, private]

Referenced by LibGeoDecomp::MPIIOWriter< CELL_TYPE >::stepFinished().

template<typename CELL_TYPE >

virtual void LibGeoDecomp::MPIIOWriter< CELL_TYPE >::stepFinished	(	const GridType &	grid,
		unsigned	step,
		WriterEvent	event
	)			`[inline, virtual]`

is called back from sim after each simulation step.

event specifies the phase in which the simulation is currently in. This may be used for instance to open/close files at the beginning/end of the simulation.

Implements LibGeoDecomp::Writer< CELL_TYPE >.

References LibGeoDecomp::GridBase< CELL, DIMENSIONS >::boundingBox(), LibGeoDecomp::MPIIOWriter< CELL_TYPE >::comm, LibGeoDecomp::MPIIOWriter< CELL_TYPE >::datatype, LibGeoDecomp::GridBase< CELL, DIMENSIONS >::dimensions(), LibGeoDecomp::MPIIOWriter< CELL_TYPE >::filename(), and LibGeoDecomp::WRITER_STEP_FINISHED.