C Syntax

       2003-2025, The Open MPI Community

                                                  Jun 07, 2025                             MPI_T_CVAR_GET_NUM(3)

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.

MPI_T_cvar_get_num will fail if:

       • MPI_T_ERR_NOT_INITIALIZED: The MPI Tools interface not initialized

       • num_cvar: Current number of control variables.

CSyntax
          #include <mpi.h>

          int MPI_T_cvar_get_num(int *num_cvar)