mfem::adios2stream Class Reference

#include <adios2stream.hpp>

Public Types
enum	openmode { openmode::out, openmode::in, openmode::app }
enum	mode { mode::sync, mode::deferred }
enum	data_type { data_type::none, data_type::point_data, data_type::cell_data }

Public Member Functions
	adios2stream (const std::string &name, const openmode mode, MPI_Comm comm, const std::string engine_type="BPFile")
	adios2stream (const std::string &name, const openmode mode, const std::string engine_type="BPFile")
virtual	~adios2stream ()
void	SetParameters (const std::map< std::string, std::string > &parameters=std::map< std::string, std::string >())
void	SetParameter (const std::string key, const std::string value) noexcept
void	BeginStep ()
void	EndStep ()
void	SetTime (const double time)
void	SetCycle (const int cycle)
void	SetRefinementLevel (const int level) noexcept
size_t	CurrentStep () const
void	Close ()

Protected Member Functions
void	Print (const Mesh &mesh, const adios2stream::mode print_mode=mode::sync)
void	Save (const GridFunction &grid_function, const std::string &variable_name, const data_type type)

Friends
class	Vector
class	GridFunction
class	Mesh
class	ADIOS2DataCollection

Detailed Description

Definition at line 47 of file adios2stream.hpp.

Member Enumeration Documentation

enum mfem::adios2stream::data_type

strong

Enumerator
none
point_data
cell_data

Definition at line 66 of file adios2stream.hpp.

enum mfem::adios2stream::mode

strong

Print and Save modes, deferred is done at Close or EndStep, sync is immediate

Enumerator
sync
deferred

Definition at line 64 of file adios2stream.hpp.

enum mfem::adios2stream::openmode

strong

Open modes for adios2stream (from std::fstream) out: write in: read app: append

Enumerator
out
in
app

Definition at line 61 of file adios2stream.hpp.

Constructor & Destructor Documentation

mfem::adios2stream::adios2stream	(	const std::string &	name,
		const openmode	mode,
		MPI_Comm	comm,
		const std::string	engine_type = "BPFile"
	)

adios2stream MPI constructor, allows for passing parameters in source code (compile-time) only.

Parameters

name	stream name
mode	adios2stream::openmode::in (Read), adios2stream::openmode::out (Write)
comm	MPI communicator establishing domain for fstream
engine_type	available adios2 engine, default is BPFile see https://adios2.readthedocs.io/en/latest/engines/engines.html

Exceptions

std::invalid_argument

(user input error) or std::runtime_error (system error)

Definition at line 114 of file adios2stream.cpp.

mfem::adios2stream::adios2stream	(	const std::string &	name,
		const openmode	mode,
		const std::string	engine_type = "BPFile"
	)

adios2stream Non-MPI serial constructor, allows for passing parameters in source code (compile-time) only.

Parameters

name	stream name
mode	adios2stream::openmode::in (Read), adios2stream::openmode::out (Write)
engine_type	available adios2 engine, default is BPFile

Exceptions

std::invalid_argument

(user input error) or std::runtime_error (system error)

Definition at line 124 of file adios2stream.cpp.

mfem::adios2stream::~adios2stream ( )

virtual

calls Close if stream is valid basically follows C++ RAII

Definition at line 135 of file adios2stream.cpp.

Member Function Documentation

void mfem::adios2stream::BeginStep

(

)

Begins an I/O step

Definition at line 161 of file adios2stream.cpp.

void mfem::adios2stream::Close

(

)

Finished interaction with adios2stream and flushes the data

Definition at line 208 of file adios2stream.cpp.

size_t mfem::adios2stream::CurrentStep

(

)

const

Return the current step between BeginStep and EndStep

Definition at line 203 of file adios2stream.cpp.

void mfem::adios2stream::EndStep

(

)

Ends the current step, by default transports the data

Definition at line 171 of file adios2stream.cpp.

void mfem::adios2stream::Print ( const Mesh &  mesh, const adios2stream::mode  print_mode = mode::sync  )

protected

Called from friend class Mesh (which is called from ParMesh)

Parameters

mesh	input Mesh object to print
print_mode	sync: one at a time, deferred: collected (pre-fetch)

Definition at line 226 of file adios2stream.cpp.

void mfem::adios2stream::Save ( const GridFunction &  grid_function, const std::string &  variable_name, const data_type  type  )

protected

Definition at line 534 of file adios2stream.cpp.

void mfem::adios2stream::SetCycle

(

const int

cycle

)

Associates a current time step (cycle) with the current I/O step as CYCLE variable

Parameters

cycle

physical time

Definition at line 192 of file adios2stream.cpp.

void mfem::adios2stream::SetParameter ( const std::string  key, const std::string  value  )

noexcept

Single parameter version of SetParameters passing a key/value pair See https://adios2.readthedocs.io/en/latest/engines/engines.html

Parameters

key	input parameter key
value	input parameter value

Definition at line 151 of file adios2stream.cpp.

void mfem::adios2stream::SetParameters

(

const std::map< std::string, std::string > &

parameters = std::map<std::string, std::string>()

)

Set parameters for a particular adios2stream Engine See https://adios2.readthedocs.io/en/latest/engines/engines.html

Parameters

parameters

map of key/value string elements

Definition at line 144 of file adios2stream.cpp.

void mfem::adios2stream::SetRefinementLevel ( const int  level )

noexcept

Input to the Global Geometry Refiner

Parameters

level

input level

Definition at line 198 of file adios2stream.cpp.

void mfem::adios2stream::SetTime

(

const double

time

)

Associates a physical time with the current I/O step as TIME variable

Parameters

time	input physical time

Definition at line 185 of file adios2stream.cpp.

Friends And Related Function Documentation

friend class ADIOS2DataCollection

friend

Definition at line 52 of file adios2stream.hpp.

friend class GridFunction

friend

Definition at line 50 of file adios2stream.hpp.

friend class Mesh

friend

Definition at line 51 of file adios2stream.hpp.

friend class Vector

friend

Definition at line 49 of file adios2stream.hpp.

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

• general/adios2stream.hpp
• general/adios2stream.cpp