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Utilities::MPI::LargeCount Namespace Reference

Functions

int Type_contiguous_c (MPI_Count count, MPI_Datatype oldtype, MPI_Datatype *newtype)
int Send_c (const void *buf, MPI_Count count, MPI_Datatype datatype, int dest, int tag, MPI_Comm comm)
int Recv_c (void *buf, MPI_Count count, MPI_Datatype datatype, int source, int tag, MPI_Comm comm, MPI_Status *status)
int Bcast_c (void *buf, MPI_Count count, MPI_Datatype datatype, unsigned int root_mpi_rank, MPI_Comm comm)
int File_write_at_c (MPI_File fh, MPI_Offset offset, const void *buf, MPI_Count count, MPI_Datatype datatype, MPI_Status *status)
int File_write_at_all_c (MPI_File fh, MPI_Offset offset, const void *buf, MPI_Count count, MPI_Datatype datatype, MPI_Status *status)
int File_write_ordered_c (MPI_File fh, const void *buf, MPI_Count count, MPI_Datatype datatype, MPI_Status *status)
int File_read_at_c (MPI_File fh, MPI_Offset offset, void *buf, MPI_Count count, MPI_Datatype datatype, MPI_Status *status)
int File_read_at_all_c (MPI_File fh, MPI_Offset offset, void *buf, MPI_Count count, MPI_Datatype datatype, MPI_Status *status)

Variables

constexpr MPI_Count mpi_max_int_count

Detailed Description

This namespace contains symbols to support MPI routines with large "counts" on MPI implementations that implement version 3.x of the standard, where count is a signed integer.

Function Documentation

◆ Type_contiguous_c()

int Utilities::MPI::LargeCount::Type_contiguous_c ( MPI_Count count,
MPI_Datatype oldtype,
MPI_Datatype * newtype )
inline

Create a contiguous type of (possibly large) count.

See the MPI 4.x standard for details.

Definition at line 63 of file mpi_large_count.h.

◆ Send_c()

int Utilities::MPI::LargeCount::Send_c ( const void * buf,
MPI_Count count,
MPI_Datatype datatype,
int dest,
int tag,
MPI_Comm comm )
inline

Send a package to rank dest with a (possibly large) count.

See the MPI 4.x standard for details.

Definition at line 150 of file mpi_large_count.h.

◆ Recv_c()

int Utilities::MPI::LargeCount::Recv_c ( void * buf,
MPI_Count count,
MPI_Datatype datatype,
int source,
int tag,
MPI_Comm comm,
MPI_Status * status )
inline

Receive a package from rank source with a (possibly large) count.

See the MPI 4.x standard for details.

Definition at line 189 of file mpi_large_count.h.

◆ Bcast_c()

int Utilities::MPI::LargeCount::Bcast_c ( void * buf,
MPI_Count count,
MPI_Datatype datatype,
unsigned int root_mpi_rank,
MPI_Comm comm )
inline

Broadcast a message of possibly large count of data from the process with rank "root" to all other processes.

See the MPI 4.x standard for details.

Definition at line 231 of file mpi_large_count.h.

◆ File_write_at_c()

int Utilities::MPI::LargeCount::File_write_at_c ( MPI_File fh,
MPI_Offset offset,
const void * buf,
MPI_Count count,
MPI_Datatype datatype,
MPI_Status * status )
inline

Write a possibly large count of data at the location offset.

See the MPI 4.x standard for details.

Definition at line 269 of file mpi_large_count.h.

◆ File_write_at_all_c()

int Utilities::MPI::LargeCount::File_write_at_all_c ( MPI_File fh,
MPI_Offset offset,
const void * buf,
MPI_Count count,
MPI_Datatype datatype,
MPI_Status * status )
inline

Collectively write a possibly large count of data at the location offset.

See the MPI 4.x standard for details.

Definition at line 305 of file mpi_large_count.h.

◆ File_write_ordered_c()

int Utilities::MPI::LargeCount::File_write_ordered_c ( MPI_File fh,
const void * buf,
MPI_Count count,
MPI_Datatype datatype,
MPI_Status * status )
inline

Collectively write a possibly large count of data in order.

See the MPI 4.x standard for details.

Definition at line 341 of file mpi_large_count.h.

◆ File_read_at_c()

int Utilities::MPI::LargeCount::File_read_at_c ( MPI_File fh,
MPI_Offset offset,
void * buf,
MPI_Count count,
MPI_Datatype datatype,
MPI_Status * status )
inline

Read a possibly large count of data at the location offset.

See the MPI 4.x standard for details.

Definition at line 376 of file mpi_large_count.h.

◆ File_read_at_all_c()

int Utilities::MPI::LargeCount::File_read_at_all_c ( MPI_File fh,
MPI_Offset offset,
void * buf,
MPI_Count count,
MPI_Datatype datatype,
MPI_Status * status )
inline

Collectively read a possibly large count of data at the location offset.

See the MPI 4.x standard for details.

Definition at line 412 of file mpi_large_count.h.

Variable Documentation

◆ mpi_max_int_count

MPI_Count Utilities::MPI::LargeCount::mpi_max_int_count
inlineconstexpr
Initial value:
=
std::numeric_limits<int>::max()

This is the largest count supported when it is represented with a signed integer (old MPI routines).

Definition at line 54 of file mpi_large_count.h.