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NAME
MPI_Grequest_complete - Reports that a generalized request is com-
plete.
SYNTAX
C Syntax
#include <mpi.h>
int MPI_Grequest_complete(MPI_Request request)
Fortran Syntax
INCLUDE 'mpif.h'
MPI_GREQUEST_COMPLETE(REQUEST, IERROR)
INTEGER REQUEST, IERROR
C++ Syntax
#include <mpi.h>
void MPI::Grequest::Complete()
INPUT/OUTPUT PARAMETER
request Generalized request (handle).
OUTPUT PARAMETER
IERROR Fortran only: Error status (integer).
DESCRIPTION
MPI_Grequest_complete informs MPI that the operations represented by
the generalized request request are complete. A call to
MPI_Wait(request, status) will return, and a call to MPI_Test(request,
flag, status) will return flag=true only after a call to MPI_Gre-
quest_complete has declared that these operations are complete.
MPI imposes no restrictions on the code executed by the callback func-
tions. However, new nonblocking operations should be defined so that
the general semantic rules about MPI calls such as MPI_Test,
MPI_Request_free, or MPI_Cancel still hold. For example, all these
calls are supposed to be local and nonblocking. Therefore, the callback
functions query_fn, free_fn, or cancel_fn should invoke blocking MPI
communication calls only if the context is such that these calls are
guaranteed to return in finite time. Once MPI_Cancel has been invoked,
the canceled operation should complete in finite time, regardless of
the state of other processes (the operation has acquired "local" seman-
tics). It should either succeed or fail without side-effects. The user
should guarantee these same properties for newly defined 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++ 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.
1.3.4 Nov 11, 2009 MPI_Grequest_complete(3)
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