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:

sc::MessageGrp sc::DescribedClass sc::RefCount sc::Identity List of all members.

Public Member Functions

 MPIMessageGrp (MPI_Comm comm)
 Use an MPI communicator to create a MessageGrp.
 MPIMessageGrp (int *argc, char ***argv)
 Use argc and argv to create a MPIMessageGrp.
 MPIMessageGrp (const Ref< KeyVal > &)
 Construction MPIMessageGrp given a KeyVal input object.
Ref< MessageGrpclone (void)
 Clones (dups) an MPIMessageGrp from MPI_COMM_WORLD.
void raw_send (int target, const void *data, int nbyte)
void raw_recv (int sender, void *data, int nbyte)
void raw_sendt (int target, int type, const 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 sum (double *, int n, double *scratch=0, int target=-1)
 Global sum reduction.
void sum (int *, int n, int *scratch=0, int target=-1)
void reduce (double *, int n, GrpReduce< double > &, double *scratch=0, int target=-1)
 Global generic reduction.
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 Member Functions

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
bool use_messagegrp_collectives_
 If true use the generic collective routines in the base class.
Ref< ThreadGrpthreadgrp
MPI_Comm commgrp
 Currently each commgrp is a dup of MPI_COMM_WORLD.

Static Protected Attributes

static int nmpi_grps
 Number of MPIMessageGrp's currently in use.
static Ref< ThreadLockgrplock
 lock to access nmpi_grps variable

Detailed Description

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


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.

sc::MPIMessageGrp::MPIMessageGrp ( const Ref< KeyVal > &   ) 

Construction MPIMessageGrp given a KeyVal input object.


Member Function Documentation

void sc::MPIMessageGrp::sum ( double *  data,
int  n,
double *  = 0,
int  target = -1 
) [virtual]

Global sum reduction.

Similar members exist for each of the basic types.

Reimplemented from sc::MessageGrp.

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.


The documentation for this class was generated from the following file:
Generated at Mon Dec 3 23:24:00 2007 for MPQC 2.3.1 using the documentation package Doxygen 1.5.2.