C Syntax

       2003-2025, The Open MPI Community

                                                  Jun 07, 2025                                MPI_T_CVAR_READ(3)

MPI_T_cvar_read  reads the value of the control variable identified by the handle specified in handle and
       stores the value in the buffer pointed to by buf. The caller must ensure that the buffer  pointed  to  by
       buf is large enough to hold the entire value of the control variable.

MPI_T_cvar_read will fail if:

       • MPI_T_ERR_NOT_INITIALIZED: The MPI Tools interface not initialized

       • MPI_T_ERR_INVALID_HANDLE: The handle is invalid

       SEEALSO:

          • MPI_T_cvar_handle_alloc

          • MPI_T_cvar_get_info

       • handle: Handle of the control variable to be read.

       • buf: Initial address of storage location for variable value.

CSyntax
          #include <mpi.h>

          int MPI_T_cvar_read(MPI_T_cvar_handle handle, const void *buf)