Provided by: openmpi-doc_2.1.1-8_all 

NAME
MPI_T_pvar_get_num - Query the number of performance variables
SYNTAX
C Syntax
#include <mpi.h>
int MPI_T_pvar_get_num(int *num_pvar)
OUTPUT PARAMETERS
num_pvar Current number of performance variables.
DESCRIPTION
MPI_T_pvar_get_num can be used to query the current number of performance variables. The number of
performance variables may increase throughout the exection of the process but will never decrease.
ERRORS
MPI_T_pvar_get_num() will fail if:
[MPI_T_ERR_NOT_INITIALIZED]
The MPI Tools interface not initialized
2.1.1 May 10, 2017 MPI_T_pvar_get_num(3)