Datatype

template<typename T>
MPI_Datatype mpicpp_lite::register_mpi_datatype()

Register a new datatype for MPI communication.

Template Parameters:

T – Datatype to register

Returns:

New MPI datatype

template<typename T>
inline MPI_Datatype mpicpp_lite::mpi_datatype()

General template to obtain an MPI_Datatype from a C++ type.

Template Parameters:

T – C++ data type

Returns:

MPI_Datatype that is used in the MPI API

inline MPI_Datatype mpicpp_lite::type_create_struct(const std::vector<MPI_Datatype> &types, const std::vector<int> &blk_lens, const std::vector<MPI_Aint> &offsets)

Create a new datatype for MPI communication.

Parameters:

  • types – MPI datatypes

  • blk_lens – Number of elements of each type

  • offsets – Byte offsets of each element

Returns:

New MPI datatype

inline MPI_Datatype mpicpp_lite::type_contiguous(int count, MPI_Datatype type)

Creates a contiguous datatype.

Parameters:

  • count – Replication count (nonnegative integer)

  • type – Datatype (handle)

Returns:

New MPI datatype

template<typename T>
inline int mpicpp_lite::type_size()

Return the number of bytes occupied by entries in the datatype.

Template Parameters:

T – Datatype

Returns:

Number of bytes