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Functions | Variables
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 Get_count_c (const MPI_Status *status, MPI_Datatype datatype, MPI_Count *count)
 
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 64 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 151 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 190 of file mpi_large_count.h.

◆ Get_count_c()

int Utilities::MPI::LargeCount::Get_count_c ( const MPI_Status *  status,
MPI_Datatype  datatype,
MPI_Count *  count 
)
inline

Return the (possibly large) number of entries of type datatype received in the message described by status, for example after an MPI_Probe() call. datatype must be a basic MPI datatype.

See the MPI 4.x standard for details.

Definition at line 233 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 254 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 292 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 328 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 364 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 399 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 435 of file mpi_large_count.h.

Variable Documentation

◆ mpi_max_int_count

constexpr 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 55 of file mpi_large_count.h.

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