table of contents
MPI_Comm_remote_size(3) | Open MPI | MPI_Comm_remote_size(3) |
NAME¶
MPI_Comm_remote_size - Determines the size of the remote group associated with an intercommunicator.SYNTAX¶
C Syntax¶
#include <mpi.h> int MPI_Comm_remote_size(MPI_Comm comm, int *size)
Fortran Syntax¶
INCLUDE 'mpif.h' MPI_COMM_REMOTE_SIZE(COMM, SIZE, IERROR) INTEGER COMM, SIZE, IERROR
C++ Syntax¶
#include <mpi.h> int Intercomm::Get_remote_size() const
INPUT PARAMETER¶
- comm
- Communicator (handle).
OUTPUT PARAMETERS¶
- size
- Number of processes in the remote group of comm (integer).
- IERROR
- Fortran only: Error status (integer).
DESCRIPTION¶
MPI_Comm_remote_size determines the size of the remote group associated with an intercommunicator.The intercommunicator accessors (MPI_Comm_test_inter, MPI_Comm_remote_size, MPI_Comm_remote_group) are all local operations.
ERRORS¶
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI::Exception object.Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.
SEE ALSO¶
MPI_Comm_test_inter MPI_Comm_remote_group MPI_Intercomm_create MPI_Intercomm_merge
January 31, 2017 | 2.0.2 |