mpi.comm: MPI\_Comm\_c2f, MPI\_Comm\_dup, MPI\_Comm\_rank, and...

In snoweye/Rmpi_PROF: Interface (Wrapper) to MPI (Message-Passing Interface)

Description

mpi.comm.c2f converts the comm (a C communicator) and returns an integer that can be used as the communicator in external FORTRAN code. mpi.comm.dup duplicates (copies) a comm to a new comm. mpi.comm.rank returns its rank in a comm. mpi.comm.size returns the total number of members in a comm.

Usage

  mpi.comm.c2f(comm=1)
  mpi.comm.dup(comm, newcomm)
  mpi.comm.rank(comm = 1)
  mpi.comm.size(comm = 1)

Arguments

comm	a communicator number
newcomm	a new communicator number

Author(s)

Hao Yu

References

http://www.lam-mpi.org/, http://www-unix.mcs.anl.gov/mpi/www/www3/

Examples

## Not run: 
#Assume that there are some slaves running
mpi.comm.size(comm=1)
mpi.comm.size(comm=0)

mpi.remote.exec(mpi.comm.rank(comm=1))
mpi.remote.exec(mpi.comm.rank(comm=0))

mpi.remote.exec(mpi.comm.size(comm=1))
mpi.remote.exec(mpi.comm.size(comm=0))

mpi.bcast.cmd(mpi.comm.dup(comm=1,newcomm=5))
mpi.comm.dup(comm=1,newcomm=5)

## End(Not run)

snoweye/Rmpi_PROF documentation built on May 30, 2019, 6:04 a.m.