Foam::PstreamDetail Namespace Reference

Some implementation details for Pstream and/or MPI. More...

Functions
template<class Type >
void	broadcast0 (Type *values, int count, MPI_Datatype datatype, const label comm)
template<class Type >
void	reduce0 (Type *values, int count, MPI_Datatype datatype, MPI_Op optype, const label comm)
template<class Type >
void	allReduce (Type *values, int count, MPI_Datatype datatype, MPI_Op optype, const label comm, label *requestID=nullptr)
template<class Type >
void	allToAll (const UList< Type > &sendData, UList< Type > &recvData, MPI_Datatype datatype, const label comm, label *requestID=nullptr)
template<class Type >
void	allToAllv (const Type *sendData, const UList< int > &sendCounts, const UList< int > &sendOffsets, Type *recvData, const UList< int > &recvCounts, const UList< int > &recvOffsets, MPI_Datatype datatype, const label comm, label *requestID=nullptr)
template<class Type >
void	gather (const Type *sendData, int sendCount, Type *recvData, int recvCount, MPI_Datatype datatype, const label comm, label *requestID=nullptr)
template<class Type >
void	scatter (const Type *sendData, int sendCount, Type *recvData, int recvCount, MPI_Datatype datatype, const label comm, label *requestID=nullptr)
template<class Type >
void	gatherv (const Type *sendData, int sendCount, Type *recvData, const UList< int > &recvCounts, const UList< int > &recvOffsets, MPI_Datatype datatype, const label comm, label *requestID=nullptr)
template<class Type >
void	scatterv (const Type *sendData, const UList< int > &sendCounts, const UList< int > &sendOffsets, Type *recvData, int recvCount, MPI_Datatype datatype, const label comm, label *requestID=nullptr)

Detailed Description

Some implementation details for Pstream and/or MPI.

InNamespace Foam::PstreamDetail

Functions to wrap MPI_Bcast, MPI_Allreduce, MPI_Iallreduce etc.

Source files

• UPstreamWrapping.H
• UPstreamWrappingTemplates.C

Function Documentation

broadcast0()

void broadcast0	(	Type *	values,
		int	count,
		MPI_Datatype	datatype,
		const label	comm
	)

Definition at line 36 of file UPstreamWrappingTemplates.C.

reduce0()

void reduce0	(	Type *	values,
		int	count,
		MPI_Datatype	datatype,
		MPI_Op	optype,
		const label	comm
	)

Definition at line 66 of file UPstreamWrappingTemplates.C.

References Foam::endl(), and Foam::Pout.

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allReduce()

void allReduce	(	Type *	values,
		int	count,
		MPI_Datatype	datatype,
		MPI_Op	optype,
		const label	comm,
		label *	requestID = nullptr
	)

Definition at line 115 of file UPstreamWrappingTemplates.C.

References Foam::abort(), Foam::endl(), Foam::FatalError, FatalErrorInFunction, and Foam::Pout.

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allToAll()

void allToAll	(	const UList< Type > &	sendData,
		UList< Type > &	recvData,
		MPI_Datatype	datatype,
		const label	comm,
		label *	requestID = nullptr
	)

Definition at line 226 of file UPstreamWrappingTemplates.C.

References Foam::abort(), UList< T >::cdata(), UList< T >::data(), UList< T >::deepCopy(), Foam::endl(), Foam::FatalError, FatalErrorInFunction, Foam::Pout, and UList< T >::size().

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allToAllv()

void allToAllv	(	const Type *	sendData,
		const UList< int > &	sendCounts,
		const UList< int > &	sendOffsets,
		Type *	recvData,
		const UList< int > &	recvCounts,
		const UList< int > &	recvOffsets,
		MPI_Datatype	datatype,
		const label	comm,
		label *	requestID = nullptr
	)

Definition at line 350 of file UPstreamWrappingTemplates.C.

References Foam::abort(), UList< T >::cdata(), Foam::endl(), Foam::FatalError, FatalErrorInFunction, Foam::Pout, and UList< T >::size().

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gather()

void gather	(	const Type *	sendData,
		int	sendCount,
		Type *	recvData,
		int	recvCount,
		MPI_Datatype	datatype,
		const label	comm,
		label *	requestID = nullptr
	)

Definition at line 500 of file UPstreamWrappingTemplates.C.

References Foam::abort(), Foam::endl(), Foam::FatalError, FatalErrorInFunction, and Foam::Pout.

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scatter()

void scatter	(	const Type *	sendData,
		int	sendCount,
		Type *	recvData,
		int	recvCount,
		MPI_Datatype	datatype,
		const label	comm,
		label *	requestID = nullptr
	)

Definition at line 618 of file UPstreamWrappingTemplates.C.

References Foam::abort(), Foam::endl(), Foam::FatalError, FatalErrorInFunction, and Foam::Pout.

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gatherv()

void gatherv	(	const Type *	sendData,
		int	sendCount,
		Type *	recvData,
		const UList< int > &	recvCounts,
		const UList< int > &	recvOffsets,
		MPI_Datatype	datatype,
		const label	comm,
		label *	requestID = nullptr
	)

Definition at line 736 of file UPstreamWrappingTemplates.C.

References Foam::abort(), UList< T >::cdata(), Foam::endl(), Foam::FatalError, FatalErrorInFunction, Foam::Pout, and UList< T >::size().

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scatterv()

void scatterv	(	const Type *	sendData,
		const UList< int > &	sendCounts,
		const UList< int > &	sendOffsets,
		Type *	recvData,
		int	recvCount,
		MPI_Datatype	datatype,
		const label	comm,
		label *	requestID = nullptr
	)

Definition at line 881 of file UPstreamWrappingTemplates.C.

References Foam::abort(), UList< T >::cdata(), Foam::endl(), Foam::FatalError, FatalErrorInFunction, Foam::Pout, and UList< T >::size().

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