#include <messmpi.h>
Inheritance diagram for sc::MPIMessageGrp:
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< MessageGrp > | clone (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< ThreadGrp > | threadgrp |
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< ThreadLock > | grplock |
lock to access nmpi_grps variable |
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.
Construction MPIMessageGrp given a KeyVal input object.
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.