MPI_Win_test(3OpenMPI)MPI_Win_test(3OpenMPI)NAME
MPI_Win_test - Attempts to complete an RMA exposure epoch; a nonblocking version of MPI_Win_wait
SYNTAX C Syntax
#include <mpi.h>
int MPI_Win_test(MPI_Win win, int *flag)
Fortran Syntax
INCLUDE 'mpif.h'
MPI_WIN_TEST( WIN, FLAG, IERROR)
INTEGER WIN, IERROR
C++ Syntax
#include <mpi.h>
bool MPI::Win::Test() const
INPUT PARAMETERS
win Window object (handle)
OUTPUT PARAMETERS
IERROR Fortran only: Error status (integer).
flag The returning state of the test for epoch closure.
DESCRIPTION
MPI_Win_test is a one-sided MPI communication synchronization call, a nonblocking version of MPI_Win_wait. It returns ag = true if
MPI_Win_wait would return, ag = false otherwise. The effect of return of MPI_Win_test with flag = true is the same as the effect of a
return of MPI_Win_wait. If ag = false is returned, then the call has no visible effect.
Invoke MPI_Win_test only where MPI_Win_wait can be invoked. Once the call has returned ag = true, it must not be invoked anew, until the
window is posted anew.
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++ func-
tions 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_Win_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_Win_post MPI_Win_wait
Open MPI 1.2 March 2007 MPI_Win_test(3OpenMPI)
Check Out this Related Man Page
MPI_Win_complete(3OpenMPI)MPI_Win_complete(3OpenMPI)NAME
MPI_Win_complete - Completes an RMA access epoch on win started by a call to MPI_Win_start
SYNTAX C Syntax
#include <mpi.h>
MPI_Win_complete(MPI_Win win)
Fortran Syntax
INCLUDE 'mpif.h'
MPI_WIN_COMPLETE(WIN, IERROR)
C++ Syntax
#include <mpi.h>
void MPI::Win::Complete() const
INPUT PARAMETERS
win Window object (handle).
OUTPUT PARAMETERS
IERROR Fortran only: Error status (integer).
DESCRIPTION
MPI_Win_complete is a one-sided MPI communication synchronization call, completing an RMA access epoch on win started by a call to
MPI_Win_start. MPI_Win_complete enforces the completion of preceding RMA calls at the origin and not at the target. A put or accumulate
call may not have completed at the target when it has completed at the origin.
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++ func-
tions 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_Win_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_Win_start
Open MPI 1.2 March 2007 MPI_Win_complete(3OpenMPI)
Manufacturer Links
General Information
Home Page: IBM United States
Documentation/Information: IBM System p - UNIX servers: Support and services
pSeries and AIX Information Center
Developerworks AIX Wiki: AIX Wiki
AIX for System Administrators
In-depth information from IBM:
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