Man page - mpi_t_pvar_start.openmpi(3)

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MPI_T_PVAR_START

SYNTAX
C Syntax
INPUT PARAMETERS
DESCRIPTION
ERRORS
COPYRIGHT

MPI_T_pvar_start , MPI_T_pvar_stop - Start/stop a performance variable

SYNTAX

C Syntax

#include <mpi.h>

int MPI_T_pvar_start(MPI_T_pvar_session session, MPI_T_pvar_handle handle)

int MPI_T_pvar_stop(MPI_T_pvar_session session, MPI_T_pvar_handle handle)

INPUT PARAMETERS

	•		session : Performance experiment session.
	•		handle : Performance variable handle.

DESCRIPTION

MPI_T_pvar_start starts the performance variable with the handle specified in handle . The special value MPI_T_PVAR_ALL_HANDLES can be passed in handle to start all non-continuous handles in the session specified in session .

MPI_T_pvar_stop stops the performance variable with the handle specified in handle . The special value MPI_T_PVAR_ALL_HANDLES can be passed in handle to stop all non-continuous handles in the session specified in session .

Continuous performance variables can neither be started nor stopped.

ERRORS

MPI_T_pvar_start and MPI_T_pvar_stop() will fail if:

	•		MPI_T_ERR_NOT_INITIALIZED : The MPI Tools interface not initialized
	•		MPI_T_ERR_INVALID_SESSION : Session parameter is not a valid session
	•		MPI_T_ERR_INVALID_HANDLE : Invalid handle or handle not associated with the session
	•		MPI_T_ERR_PVAR_NO_STARTSTOP : The variable cannot be started or stopped

SEE ALSO:

•

MPI_T_pvar_get_info

COPYRIGHT

2003-2025, The Open MPI Community