NAME¶
MPI_Comm_get_info - Retrieves active communicator info hints
C Syntax¶
#include <mpi.h>
int MPI_Comm_get_info(MPI_Comm comm, MPI_Info *info_used)
Fortran Syntax¶
INCLUDE 'mpif.h'
MPI_COMM_GET_INFO(COMM, INFO_USED, IERROR)
INTEGER COMM, INFO_USED, IERROR
- comm
- Communicator from which to receive active info hints
OUTPUT PARAMETERS¶
- info_used
- New info object returned with all active hints on this communicator.
- IERROR
- Fortran only: Error status (integer).
DESCRIPTION¶
MPI_Comm_get_info returns a new info object containing the hints of the
communicator associated with comm. The current setting of all hints
actually used by the system related to this communicator is returned in
info_used. If no such hints exist, a handle to a newly created info
object is returned that contains no key/value pair. The user is responsible
for freeing info_used via MPI_Info_free.
ERRORS¶
Almost all MPI routines return an error value; C routines as the value of the
function and Fortran routines in the last argument.
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_get_info, MPI_Info_free