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sc::MPIMessageGrp Class Reference

The MPIMessageGrp class is an concrete implementation of MessageGrp that uses the MPI 1 library. More...

#include <messmpi.h>

Inheritance diagram for sc::MPIMessageGrp:

[legend]Collaboration diagram for sc::MPIMessageGrp:

[legend]List of all members.

Public Methods
	MPIMessageGrp ()
	MPIMessageGrp (MPI_Comm comm)
	Use an MPI communicator to create a MessageGrp. More...
	MPIMessageGrp (int *argc, char ***argv)
	Use argc and argv to create a MPIMessageGrp. More...
	MPIMessageGrp (const Ref< KeyVal > &)
	Construction MPIMessageGrp given a KeyVal input object.
	~MPIMessageGrp ()
Ref< MessageGrp >	clone (void)
	Clones (dups) an MPIMessageGrp from MPI_COMM_WORLD.
void	raw_send (int target, void *data, int nbyte)
void	raw_recv (int sender, void *data, int nbyte)
void	raw_sendt (int target, int type, void *data, int nbyte)
void	raw_recvt (int type, void *data, int nbyte)
int	probet (int type)
	Ask if a given typed message has been received.
void	sync ()
	Synchronize all of the processors.
void	reduce (double *, int n, GrpReduce< double > &, double *scratch=0, int target=-1)
	Global generic reduction. More...
void	reduce (unsigned int *, int n, GrpReduce< unsigned int > &, unsigned int *scratch=0, int target=-1)
void	reduce (int *, int n, GrpReduce< int > &, int *scratch=0, int target=-1)
void	reduce (char *, int n, GrpReduce< char > &, char *scratch=0, int target=-1)
void	reduce (unsigned char *, int n, GrpReduce< unsigned char > &, unsigned char *scratch=0, int target=-1)
void	reduce (signed char *, int n, GrpReduce< signed char > &, signed char *scratch=0, int target=-1)
void	reduce (short *, int n, GrpReduce< short > &, short *scratch=0, int target=-1)
void	reduce (float *, int n, GrpReduce< float > &, float *scratch=0, int target=-1)
void	reduce (long *, int n, GrpReduce< long > &, long *scratch=0, int target=-1)
void	raw_bcast (void *data, int nbyte, int from)
Protected Methods
void	init (MPI_Comm comm, int *argc=0, char ***argv=0)
	Not thread-safe due to race condition on nmpi_grps variable.
Protected Attributes
void *	buf
int	bufsize
int	rnode
int	rtag
int	rlen
Ref< ThreadGrp >	threadgrp
MPI_Comm	commgrp
	Currently each commgrp is a dup of MPI_COMM_WORLD.
Static Protected Attributes
int	nmpi_grps
	Number of MPIMessageGrp's currently in use.
Ref< ThreadLock >	grplock
	lock to access nmpi_grps variable.

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Detailed Description

The MPIMessageGrp class is an concrete implementation of MessageGrp that uses the MPI 1 library.

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Constructor & Destructor Documentation

sc::MPIMessageGrp::MPIMessageGrp (  MPI_Comm    comm )

Use an MPI communicator to create a MessageGrp. The comm argument could be a subset of MPI_COMM_WORLD, for example.

sc::MPIMessageGrp::MPIMessageGrp (  int *    argc, char ***    argv )

Use argc and argv to create a MPIMessageGrp. This would have to be used for implementations of MPI that have MPI_Init fill in argc and argv.

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Member Function Documentation

void sc::MPIMessageGrp::reduce (  double *   , int    n, GrpReduce< double > &   , double *    scratch = 0, int    target = -1 )  [virtual]

Global generic reduction. Similar members exist for each of the basic types. Reimplemented from sc::MessageGrp.

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The documentation for this class was generated from the following file:

• messmpi.h

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