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

Description Usage Arguments Author(s) References Examples

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

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  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.openmpi.org/

Examples

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#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)

Rmpi documentation built on April 11, 2018, 5:04 p.m.

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