137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
// This file contains wrappers for MPI routines and functions to pack/unpack data structures
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#ifndef MPI_WRAPPERS_INC
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#define MPI_WRAPPERS_INC
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#include <string.h>
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#include <vector>
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#include <set>
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#include <map>
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#ifdef USE_MPI
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// Inlcude MPI
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#include "mpi.h"
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#else
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// Create fake MPI types
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typedef int MPI_Comm;
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typedef int MPI_Request;
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typedef int MPI_Status;
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#define MPI_COMM_WORLD 0
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#define MPI_COMM_SELF 0
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#define MPI_STATUS_IGNORE NULL
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enum MPI_Datatype { MPI_LOGICAL, MPI_CHAR, MPI_INT, MPI_DOUBLE };
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enum MPI_Op { MPI_SUM };
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// Fake MPI functions
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int MPI_Init(int*,char***);
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int MPI_Finalize();
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int MPI_Comm_size( MPI_Comm, int *size );
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int MPI_Comm_rank( MPI_Comm, int *rank );
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int MPI_Barrier(MPI_Comm);
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int MPI_Waitall(int,MPI_Request[],MPI_Status[]);
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int MPI_Bcast(void*,int,MPI_Datatype,int,MPI_Comm);
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int MPI_Isend(const void *buf, int count, MPI_Datatype datatype, int dest, int tag,
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MPI_Comm comm, MPI_Request *request);
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int MPI_Irecv(void *buf, int count, MPI_Datatype datatype, int source,
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int tag, MPI_Comm comm, MPI_Request *request);
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int MPI_Allreduce(const void *sendbuf, void *recvbuf, int count,
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MPI_Datatype datatype, MPI_Op op, MPI_Comm comm);
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int MPI_Sendrecv(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
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int dest, int sendtag,
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void *recvbuf, int recvcount, MPI_Datatype recvtype,
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int source, int recvtag,
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MPI_Comm comm, MPI_Status *status);
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double MPI_Wtime( void );
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#endif
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//! Get the size of MPI_COMM_WORLD
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inline int MPI_WORLD_SIZE( ) {
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int size = 1;
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MPI_Comm_size( MPI_COMM_WORLD, &size );
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return size;
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}
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//! Get the size of MPI_COMM_WORLD
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inline int MPI_WORLD_RANK( ) {
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int rank = 0;
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MPI_Comm_rank( MPI_COMM_WORLD, &rank );
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return rank;
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}
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//! Return the appropriate MPI datatype for a class
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template<class TYPE>
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MPI_Datatype getMPItype();
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//! Template function to return the buffer size required to pack a class
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template<class TYPE>
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size_t packsize( const TYPE& rhs );
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//! Template function to pack a class to a buffer
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template<class TYPE>
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void pack( const TYPE& rhs, char *buffer );
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//! Template function to unpack a class from a buffer
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template<class TYPE>
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void unpack( TYPE& data, const char *buffer );
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//! Template function to return the buffer size required to pack a std::vector
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template<class TYPE>
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size_t packsize( const std::vector<TYPE>& rhs );
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//! Template function to pack a class to a buffer
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template<class TYPE>
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void pack( const std::vector<TYPE>& rhs, char *buffer );
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//! Template function to pack a class to a buffer
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template<class TYPE>
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void unpack( std::vector<TYPE>& data, const char *buffer );
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//! Template function to return the buffer size required to pack a std::pair
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template<class TYPE1, class TYPE2>
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size_t packsize( const std::pair<TYPE1,TYPE2>& rhs );
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//! Template function to pack a class to a buffer
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template<class TYPE1, class TYPE2>
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void pack( const std::pair<TYPE1,TYPE2>& rhs, char *buffer );
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//! Template function to pack a class to a buffer
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template<class TYPE1, class TYPE2>
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void unpack( std::pair<TYPE1,TYPE2>& data, const char *buffer );
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//! Template function to return the buffer size required to pack a std::map
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template<class TYPE1, class TYPE2>
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size_t packsize( const std::map<TYPE1,TYPE2>& rhs );
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//! Template function to pack a class to a buffer
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template<class TYPE1, class TYPE2>
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void pack( const std::map<TYPE1,TYPE2>& rhs, char *buffer );
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//! Template function to pack a class to a buffer
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template<class TYPE1, class TYPE2>
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void unpack( std::map<TYPE1,TYPE2>& data, const char *buffer );
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//! Template function to return the buffer size required to pack a std::set
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template<class TYPE>
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size_t packsize( const std::set<TYPE>& rhs );
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//! Template function to pack a class to a buffer
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template<class TYPE>
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void pack( const std::set<TYPE>& rhs, char *buffer );
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//! Template function to pack a class to a buffer
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template<class TYPE>
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void unpack( std::set<TYPE>& data, const char *buffer );
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#endif
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#include "common/MPI_Helpers.hpp"
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