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MPI_Comm_get_info - Retrieves active communicator info hints
#include <mpi.h>
int MPI_Comm_get_info(MPI_Comm comm, MPI_Info *info_used)
USE MPI
! or the older form: INCLUDE ’mpif.h’
MPI_COMM_GET_INFO(COMM, INFO_USED, IERROR)
INTEGER COMM, INFO_USED, IERROR
USE mpi_f08
MPI_Comm_get_info(comm, info_used, ierror)
TYPE(MPI_Comm), INTENT(IN) :: comm
TYPE(MPI_Info), INTENT(OUT) :: info_used
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
- comm
- Communicator from which to receive active info hints
- info_used
- New info object returned with all active hints
on this communicator.
- IERROR
- Fortran only: Error status (integer).
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.
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.
MPI_Comm_get_info, MPI_Info_free
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