Wrapper around MPI_Comm. Has a shallow copy constructor; use Create(Get_group()) for deep copy. More...

#include <safempi.h>

Inheritance diagram for SafeMPI::Intracomm:

Classes
struct	Impl

struct	WorldInitObject

Public Member Functions
	Intracomm (const Intracomm &other)

	Intracomm (const MPI_Comm &comm, bool take_ownership_of_comm=true)

	Intracomm (const WorldInitObject &)

	~Intracomm ()

void	Abort (int code=1) const

void	Allreduce (const void sendbuf, void recvbuf, const int count, const MPI_Datatype datatype, const MPI_Op op) const

void	Barrier () const

void	Bcast (void *buf, size_t count, const MPI_Datatype datatype, const int root) const

void	binary_tree_info (int root, int &parent, int &child0, int &child1)
	Construct info about a binary tree with given root. More...

Intracomm	Clone () const

Intracomm	Create (Group group) const

bool	Get_attr (int key, void *value) const

Group	Get_group () const

MPI_Comm &	Get_mpi_comm () const

int	Get_rank () const

int	Get_size () const

Request	Irecv (void *buf, const int count, const MPI_Datatype datatype, const int src, const int tag) const

Request	Isend (const void *buf, const int count, const MPI_Datatype datatype, const int dest, const int tag) const

Request	Issend (const void *buf, const int count, const MPI_Datatype datatype, const int dest, const int tag) const

bool	operator== (const Intracomm &other) const

void	Recv (void *buf, const int count, const MPI_Datatype datatype, const int source, const int tag) const

void	Recv (void *buf, const int count, const MPI_Datatype datatype, const int source, const int tag, MPI_Status &status) const

void	Reduce (const void sendbuf, void recvbuf, const int count, const MPI_Datatype datatype, const MPI_Op op, const int root) const

void	Send (const void *buf, const int count, const MPI_Datatype datatype, int dest, int tag) const

Intracomm	Split (int Color, int Key=0) const

Intracomm	Split_type (int Type, int Key=0) const

int	unique_reserved_tag ()
	Returns a unique tag reserved for long-term use (0<tag<1000) More...

int	unique_tag ()
	Returns a unique tag for temporary use (1023<tag<4095) More...

Static Public Member Functions
static int	unique_tag_period ()

Static Public Attributes
static const int	SHARED_SPLIT_TYPE = MPI_COMM_TYPE_SHARED

static const int	UNDEFINED_COLOR = MPI_UNDEFINED

static const int	UNDEFINED_SPLIT_TYPE = MPI_UNDEFINED

Private Member Functions
	Intracomm ()

	Intracomm (const std::shared_ptr< Impl > &i)

Intracomm &	operator= (const Intracomm &other)

Static Private Member Functions
static bool	Comm_compare (const MPI_Comm &comm1, const MPI_Comm &comm2)

Private Attributes
std::shared_ptr< Impl >	pimpl

Friends
int	Finalize ()
	Analogous to MPI_Finalize. More...

void	SafeMPI::detail::init_comm_world ()

Detailed Description

Wrapper around MPI_Comm. Has a shallow copy constructor; use Create(Get_group()) for deep copy.

Constructor & Destructor Documentation

◆ Intracomm() [1/5]

SafeMPI::Intracomm::Intracomm ( const std::shared_ptr< Impl > & i )

inlineprivate

◆ Intracomm() [2/5]

SafeMPI::Intracomm::Intracomm ( )

inlineprivate

Referenced by Create(), Split(), and Split_type().

◆ Intracomm() [3/5]

SafeMPI::Intracomm::Intracomm ( const WorldInitObject & init )

◆ Intracomm() [4/5]

SafeMPI::Intracomm::Intracomm	(	const MPI_Comm &	comm,
		bool	take_ownership_of_comm = `true`
	)

inlineexplicit

References Comm_compare(), SafeMPI::Is_initialized(), MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Comm_rank(), MPI_Comm_size(), MPI_COMM_WORLD, and pimpl.

◆ Intracomm() [5/5]

SafeMPI::Intracomm::Intracomm ( const Intracomm & other )

inline

◆ ~Intracomm()

SafeMPI::Intracomm::~Intracomm ( )

inline

Member Function Documentation

◆ Abort()

void SafeMPI::Intracomm::Abort ( int code = 1 ) const

inline

References MPI_Abort(), and pimpl.

Referenced by madness::error().

◆ Allreduce()

void SafeMPI::Intracomm::Allreduce	(	const void *	sendbuf,
		void *	recvbuf,
		const int	count,
		const MPI_Datatype	datatype,
		const MPI_Op	op
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Allreduce(), op(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

◆ Barrier()

void SafeMPI::Intracomm::Barrier ( ) const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Barrier(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by madness::World::World().

◆ Bcast()

void SafeMPI::Intracomm::Bcast	(	void *	buf,
		size_t	count,
		const MPI_Datatype	datatype,
		const int	root
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Bcast(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by madness::WorldMpiInterface::Bcast().

◆ binary_tree_info()

void SafeMPI::Intracomm::binary_tree_info	(	int	root,
		int &	parent,
		int &	child0,
		int &	child1
	)

Construct info about a binary tree with given root.

Constructs a binary tree spanning the communicator with process root as the root of the tree. Returns the logical parent and children in the tree of the calling process. If there is no parent/child the value -1 will be set.

References Get_rank(), Get_size(), me, and np.

Referenced by madness::WorldGopInterface::all_reduce(), madness::WorldGopInterface::bcast_task(), madness::WorldGopInterface::broadcast(), madness::WorldGopInterface::concat0(), madness::WorldGopInterface::fence_impl(), madness::WorldGopInterface::lazy_sync(), and madness::WorldGopInterface::reduce().

◆ Clone()

Intracomm SafeMPI::Intracomm::Clone ( ) const

inline

Clones this Intracomm object

Returns: a (deep) copy of this Intracomm object

References Create(), and Get_group().

◆ Comm_compare()

static bool SafeMPI::Intracomm::Comm_compare	(	const MPI_Comm &	comm1,
		const MPI_Comm &	comm2
	)

inlinestaticprivate

References MPI_Comm_compare(), MPI_IDENT, and MPI_SUCCESS.

Referenced by Intracomm(), SafeMPI::Intracomm::Impl::~Impl(), and operator==().

◆ Create()

Intracomm SafeMPI::Intracomm::Create ( Group group ) const

inline

This collective operation creates a new Intracomm from an Intracomm::Group object. Must be called by all processes that belong to this communicator, but not all must use the same group . Thus this Intracomm can be partitioned into several Intracomm objects with one call.

Parameters

group Intracomm::Group describing the Intracomm object to be created (Intracomm::Get_group() and Intracomm::Group::Incl() )

Returns: a new Intracomm object

References Intracomm(), SafeMPI::Group::group(), MADNESS_ASSERT, MADNESS_MPI_TEST, me, MPI_Comm_create(), MPI_Comm_rank(), MPI_Comm_size(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by Clone(), and test_multi_world().

◆ Get_attr()

bool SafeMPI::Intracomm::Get_attr	(	int	key,
		void *	value
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Comm_get_attr(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

◆ Get_group()

Group SafeMPI::Intracomm::Get_group ( ) const

inline

This local operation returns the Intracomm::Group object corresponding to this intracommunicator

Returns: the Intracomm::Group object corresponding to this intracommunicator

References MADNESS_ASSERT, pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by madness::WorldAmInterface::WorldAmInterface(), Clone(), and test_multi_world().

◆ Get_mpi_comm()

MPI_Comm& SafeMPI::Intracomm::Get_mpi_comm ( ) const

inline

References MADNESS_ASSERT, and pimpl.

◆ Get_rank()

int SafeMPI::Intracomm::Get_rank ( ) const

inline

References MADNESS_ASSERT, and pimpl.

Referenced by madness::RMI::assert_aslr_off(), madness::ThreadPool::begin(), binary_tree_info(), madness::WorldGopInterface::initial_max_reducebcast_msg_size(), madness::detail::WorldMpi::initialize(), main(), madness::WorldMpiInterface::rank(), and madness::profiling::TaskProfiler::write_to_file().

◆ Get_size()

int SafeMPI::Intracomm::Get_size ( ) const

inline

References MADNESS_ASSERT, and pimpl.

Referenced by madness::ThreadPool::ThreadPool(), binary_tree_info(), madness::WorldMpiInterface::nproc(), madness::WorldMpiInterface::size(), and test_multi_world().

◆ Irecv()

Request SafeMPI::Intracomm::Irecv	(	void *	buf,
		const int	count,
		const MPI_Datatype	datatype,
		const int	src,
		const int	tag
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Irecv(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by madness::WorldMpiInterface::Irecv().

◆ Isend()

Request SafeMPI::Intracomm::Isend	(	const void *	buf,
		const int	count,
		const MPI_Datatype	datatype,
		const int	dest,
		const int	tag
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Isend(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by madness::WorldMpiInterface::Isend().

◆ Issend()

Request SafeMPI::Intracomm::Issend	(	const void *	buf,
		const int	count,
		const MPI_Datatype	datatype,
		const int	dest,
		const int	tag
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Issend(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

◆ operator=()

Intracomm& SafeMPI::Intracomm::operator= ( const Intracomm & other )

private

◆ operator==()

bool SafeMPI::Intracomm::operator== ( const Intracomm & other ) const

inline

References Comm_compare(), and pimpl.

◆ Recv() [1/2]

void SafeMPI::Intracomm::Recv	(	void *	buf,
		const int	count,
		const MPI_Datatype	datatype,
		const int	source,
		const int	tag
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Recv(), MPI_STATUS_IGNORE, pimpl, SAFE_MPI_GLOBAL_MUTEX, and source().

◆ Recv() [2/2]

void SafeMPI::Intracomm::Recv	(	void *	buf,
		const int	count,
		const MPI_Datatype	datatype,
		const int	source,
		const int	tag,
		MPI_Status &	status
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Recv(), pimpl, SAFE_MPI_GLOBAL_MUTEX, source(), and status.

Referenced by madness::WorldMpiInterface::Recv().

◆ Reduce()

void SafeMPI::Intracomm::Reduce	(	const void *	sendbuf,
		void *	recvbuf,
		const int	count,
		const MPI_Datatype	datatype,
		const MPI_Op	op,
		const int	root
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Reduce(), op(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by madness::RMI::assert_aslr_off().

◆ Send()

void SafeMPI::Intracomm::Send	(	const void *	buf,
		const int	count,
		const MPI_Datatype	datatype,
		int	dest,
		int	tag
	)		const

inline

References MADNESS_ASSERT, MADNESS_MPI_TEST, MPI_Ssend(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by madness::WorldMpiInterface::Send().

◆ Split()

Intracomm SafeMPI::Intracomm::Split	(	int	Color,
		int	Key = `0`
	)		const

inline

This collective operation creates a new Intracomm using the MPI_Comm_split. Must be called by all processes that belong to this communicator. Each caller must provide Color of the new Intracomm and Key (this controls the rank within the new Intracomm; ties are broken by the rank in this Intracomm).

Parameters

Color	Specifies the new Intracomm that the calling process is to be assigned to. The value of color must be non-negative. If Color=UNDEFINED_COLOR then an uninitialized Intracomm object will be produced.
Key	The relative rank of the calling process in the group of the new Intracomm. If omitted, each communicator's ranks will be determined by the rank in the host communicator.

Returns: a new Intracomm object

References Intracomm(), MADNESS_ASSERT, MADNESS_MPI_TEST, me, MPI_COMM_NULL, MPI_Comm_rank(), MPI_Comm_size(), MPI_Comm_split(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by madness::MacroTaskQ::create_worlds(), and test_multi_world().

◆ Split_type()

Intracomm SafeMPI::Intracomm::Split_type	(	int	Type,
		int	Key = `0`
	)		const

inline

This collective operation creates a new Intracomm using the MPI_Comm_split_type. Must be called by all processes that belong to this communicator. Each caller must provide the split type and Key (this controls the rank within the new Intracomm; ties are broken by the rank in this Intracomm).

Parameters

Type	Controls how this Intracomm will be split. The value can only be UNDEFINED_SPLIT_TYPE or SHARED_SPLIT_TYPE. If Type=UNDEFINED_SPLIT_TYPE then an uninitialized Intracomm object will be produced.
Key	The relative rank of the calling process in the group of the new Intracomm. If omitted, each communicator's ranks will be determined by the rank in the host communicator.

Returns: a new Intracomm object

References Intracomm(), MADNESS_ASSERT, MADNESS_MPI_TEST, me, MPI_COMM_NULL, MPI_Comm_rank(), MPI_Comm_size(), MPI_Comm_split_type(), MPI_Info_create(), MPI_Info_free(), pimpl, and SAFE_MPI_GLOBAL_MUTEX.

Referenced by test_multi_world().

◆ unique_reserved_tag()

int SafeMPI::Intracomm::unique_reserved_tag ( )

inline

Returns a unique tag reserved for long-term use (0<tag<1000)

Get a tag from this routine for long-term/repeated use.

Tags in [1000,1023] are statically assigned.

References MADNESS_ASSERT, and pimpl.

◆ unique_tag()

int SafeMPI::Intracomm::unique_tag ( )

inline

Returns a unique tag for temporary use (1023<tag<4095)

These tags are intended for one time use to avoid tag collisions with other messages around the same time period. It simply increments/wraps a counter and returns the next legal value.

So that send and receiver agree on the tag all processes need to call this routine in the same sequence.

References MADNESS_ASSERT, and pimpl.

Referenced by madness::WorldGopInterface::broadcast(), madness::WorldGopInterface::concat0(), madness::WorldGopInterface::fence_impl(), madness::WorldGopInterface::reduce(), and madness::archive::ArchiveStoreImpl< ParallelOutputArchive< localarchiveT >, WorldContainer< keyT, valueT > >::store().

◆ unique_tag_period()

static int SafeMPI::Intracomm::unique_tag_period ( )

inlinestatic

Returns: the period of repeat of unique tags produces by unique_tag()

References SafeMPI::Intracomm::Impl::unique_tag_period().

Referenced by madness::WorldGopInterface::concat0().

Friends And Related Function Documentation

◆ Finalize

int Finalize ( )

friend

Analogous to MPI_Finalize.

This returns status rather than throw an exception upon failure because this is a "destructor", and throwing from destructors is evil.

Returns: 0 if successful, nonzero otherwise (see MPI_Finalize() for the return codes).

◆ SafeMPI::detail::init_comm_world

void SafeMPI::detail::init_comm_world ( )

friend

Member Data Documentation

◆ pimpl

std::shared_ptr<Impl> SafeMPI::Intracomm::pimpl

private

Referenced by Intracomm(), Abort(), Allreduce(), Barrier(), Bcast(), Create(), Get_attr(), Get_group(), Get_mpi_comm(), Get_rank(), Get_size(), SafeMPI::detail::init_comm_world(), Irecv(), Isend(), Issend(), operator==(), Recv(), Reduce(), Send(), Split(), Split_type(), unique_reserved_tag(), and unique_tag().

◆ SHARED_SPLIT_TYPE

const int SafeMPI::Intracomm::SHARED_SPLIT_TYPE = MPI_COMM_TYPE_SHARED

static

Referenced by test_multi_world().

◆ UNDEFINED_COLOR

const int SafeMPI::Intracomm::UNDEFINED_COLOR = MPI_UNDEFINED

static

◆ UNDEFINED_SPLIT_TYPE

const int SafeMPI::Intracomm::UNDEFINED_SPLIT_TYPE = MPI_UNDEFINED

static

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

Classes

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Member Functions

Static Private Member Functions

Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ Intracomm() [1/5]

◆ Intracomm() [2/5]

◆ Intracomm() [3/5]

◆ Intracomm() [4/5]

◆ Intracomm() [5/5]

◆ ~Intracomm()

Member Function Documentation

◆ Abort()

◆ Allreduce()

◆ Barrier()

◆ Bcast()

◆ binary_tree_info()

◆ Clone()

◆ Comm_compare()

◆ Create()

◆ Get_attr()

◆ Get_group()

◆ Get_mpi_comm()

◆ Get_rank()

◆ Get_size()

◆ Irecv()

◆ Isend()

◆ Issend()

◆ operator=()

◆ operator==()

◆ Recv() [1/2]

◆ Recv() [2/2]

◆ Reduce()

◆ Send()

◆ Split()

◆ Split_type()

◆ unique_reserved_tag()

◆ unique_tag()

◆ unique_tag_period()

Friends And Related Function Documentation

◆ Finalize

◆ SafeMPI::detail::init_comm_world

Member Data Documentation

◆ pimpl

◆ SHARED_SPLIT_TYPE

◆ UNDEFINED_COLOR

◆ UNDEFINED_SPLIT_TYPE