mpi.h File Reference

#include <deal.II/base/config.h>
#include <deal.II/base/array_view.h>
#include <deal.II/base/mpi_tags.h>
#include <deal.II/base/numbers.h>
#include <map>
#include <numeric>
#include <set>
#include <vector>

Go to the source code of this file.

Classes
class	Utilities::MPI::DuplicatedCommunicator
class	Utilities::MPI::CollectiveMutex
class	Utilities::MPI::CollectiveMutex::ScopedLock
struct	Utilities::MPI::MinMaxAvg
class	Utilities::MPI::MPI_InitFinalize

Namespaces
	Utilities
	Utilities::MPI

Macros
#define	DEAL_II_MPI_CONST_CAST(expr)   (expr)

Functions
IndexSet	Utilities::create_evenly_distributed_partitioning (const unsigned int my_partition_id, const unsigned int n_partitions, const IndexSet::size_type total_size)
unsigned int	Utilities::MPI::n_mpi_processes (const MPI_Comm &mpi_communicator)
unsigned int	Utilities::MPI::this_mpi_process (const MPI_Comm &mpi_communicator)
std::vector< unsigned int >	Utilities::MPI::compute_point_to_point_communication_pattern (const MPI_Comm &mpi_comm, const std::vector< unsigned int > &destinations)
unsigned int	Utilities::MPI::compute_n_point_to_point_communications (const MPI_Comm &mpi_comm, const std::vector< unsigned int > &destinations)
MPI_Comm	Utilities::MPI::duplicate_communicator (const MPI_Comm &mpi_communicator)
void	Utilities::MPI::free_communicator (MPI_Comm &mpi_communicator)
int	Utilities::MPI::create_group (const MPI_Comm &comm, const MPI_Group &group, const int tag, MPI_Comm *new_comm)
std::vector< IndexSet >	Utilities::MPI::create_ascending_partitioning (const MPI_Comm &comm, const IndexSet::size_type local_size)
IndexSet	Utilities::MPI::create_evenly_distributed_partitioning (const MPI_Comm &comm, const IndexSet::size_type total_size)
template<class Iterator , typename Number = long double>
std::pair< Number, typename numbers::NumberTraits< Number >::real_type >	Utilities::MPI::mean_and_standard_deviation (const Iterator begin, const Iterator end, const MPI_Comm &comm)
template<typename T >
T	Utilities::MPI::sum (const T &t, const MPI_Comm &mpi_communicator)
template<typename T , typename U >
void	Utilities::MPI::sum (const T &values, const MPI_Comm &mpi_communicator, U &sums)
template<typename T >
void	Utilities::MPI::sum (const ArrayView< const T > &values, const MPI_Comm &mpi_communicator, const ArrayView< T > &sums)
template<int rank, int dim, typename Number >
SymmetricTensor< rank, dim, Number >	Utilities::MPI::sum (const SymmetricTensor< rank, dim, Number > &local, const MPI_Comm &mpi_communicator)
template<int rank, int dim, typename Number >
Tensor< rank, dim, Number >	Utilities::MPI::sum (const Tensor< rank, dim, Number > &local, const MPI_Comm &mpi_communicator)
template<typename Number >
void	Utilities::MPI::sum (const SparseMatrix< Number > &local, const MPI_Comm &mpi_communicator, SparseMatrix< Number > &global)
template<typename T >
T	Utilities::MPI::max (const T &t, const MPI_Comm &mpi_communicator)
template<typename T , typename U >
void	Utilities::MPI::max (const T &values, const MPI_Comm &mpi_communicator, U &maxima)
template<typename T >
void	Utilities::MPI::max (const ArrayView< const T > &values, const MPI_Comm &mpi_communicator, const ArrayView< T > &maxima)
template<typename T >
T	Utilities::MPI::min (const T &t, const MPI_Comm &mpi_communicator)
template<typename T , typename U >
void	Utilities::MPI::min (const T &values, const MPI_Comm &mpi_communicator, U &minima)
template<typename T >
void	Utilities::MPI::min (const ArrayView< const T > &values, const MPI_Comm &mpi_communicator, const ArrayView< T > &minima)
MinMaxAvg	Utilities::MPI::min_max_avg (const double my_value, const MPI_Comm &mpi_communicator)
std::vector< MinMaxAvg >	Utilities::MPI::min_max_avg (const std::vector< double > &my_value, const MPI_Comm &mpi_communicator)
void	Utilities::MPI::min_max_avg (const ArrayView< const double > &my_values, const ArrayView< MinMaxAvg > &result, const MPI_Comm &mpi_communicator)
bool	Utilities::MPI::job_supports_mpi ()
template<typename T >
std::map< unsigned int, T >	Utilities::MPI::some_to_some (const MPI_Comm &comm, const std::map< unsigned int, T > &objects_to_send)
template<typename T >
std::vector< T >	Utilities::MPI::all_gather (const MPI_Comm &comm, const T &object_to_send)
template<typename T >
std::vector< T >	Utilities::MPI::gather (const MPI_Comm &comm, const T &object_to_send, const unsigned int root_process=0)
std::vector< unsigned int >	Utilities::MPI::compute_index_owner (const IndexSet &owned_indices, const IndexSet &indices_to_look_up, const MPI_Comm &comm)
template<typename T >
std::vector< T >	Utilities::MPI::compute_set_union (const std::vector< T > &vec, const MPI_Comm &comm)
template<typename T >
std::set< T >	Utilities::MPI::compute_set_union (const std::set< T > &set, const MPI_Comm &comm)

Macro Definition Documentation

DEAL_II_MPI_CONST_CAST

#define DEAL_II_MPI_CONST_CAST

(

expr

)

(expr)

Helper macro to remove const from the pointer arguments to some MPI_* functions.

This is needed as the input arguments of functions like MPI_Allgather() are not marked as const in OpenMPI 1.6.5. If using MPI 3 or newer, this macro is a NOOP, while we do the following otherwise:

1. remove * from type of expr
2. remove const from resulting type
3. add * to resulting type
4. const_cast the given expression expr to this new type.

Definition at line 76 of file mpi.h.