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MPI_T_cvar_get_num

:ref:`MPI_T_cvar_get_num` |mdash| Query the number of control variables

SYNTAX

C Syntax

#include <mpi.h>

int MPI_T_cvar_get_num(int *num_cvar)

OUTPUT PARAMETERS

  • num_cvar: Current number of control variables.

DESCRIPTION

:ref:`MPI_T_cvar_get_num` can be used to query the current number of control variables. The number of control variables may increase throughout the execution of the process but will never decrease.

ERRORS

:ref:`MPI_T_cvar_get_num` will fail if:

  • MPI_T_ERR_NOT_INITIALIZED: The MPI Tools interface not initialized