MPI_T_CATEGORY_GET_NUM(3)			     Open MPI				 MPI_T_CATEGORY_GET_NUM(3)

MPI_T_category_get_num — Query the number of categories

SYNTAX
   C Syntax
	  #include <mpi.h>

	  int MPI_T_category_get_num(int *num_cat)

OUTPUT PARAMETERS
       • num_cat: Current number of categories

DESCRIPTION
       MPI_T_category_get_num can be used to query the current number of categories.

ERRORS
       MPI_T_category_get_num will fail if:

       • MPI_T_ERR_NOT_INITIALIZED: The MPI Tools interface not initialized

Copyright
       2003-2026, The Open MPI Community

						   Mar 05, 2026				 MPI_T_CATEGORY_GET_NUM(3)
