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MPI_T_PVAR_GET_NUM(3) Open MPI MPI_T_PVAR_GET_NUM(3)

NAME

MPI_T_pvar_get_num - Query the number of performance variables

MPI_T_pvar_get_num — Query the number of performance variables

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 execution 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

Author

The Open MPI community

Copyright

2003-2026, The Open MPI Community

October 18, 2026