Synopsis

int MPI_T_pvar_readreset(MPI_T_pvar_session session, MPI_T_pvar_handle handle,
                         void *buf)

Input Parameters

session

identifier of performance experiment session (handle)

handle

handle of a performance variable (handle)

Output Parameters

buf

initial address of storage location for variable value (choice)

Thread and Interrupt Safety

This routine is thread-safe. This means that this routine may be safely used by multiple threads without the need for any user-provided thread locks. However, the routine is not interrupt safe. Typically, this is due to the use of memory allocation routines such as 'malloc' or other non-MPICH runtime routines that are themselves not interrupt-safe.

Errors

All MPI routines (except 'MPI_Wtime' and 'MPI_Wtick') return an error value; C routines as the value of the function and Fortran routines in the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job. The error handler may be changed with 'MPI_Comm_set_errhandler' (for communicators), 'MPI_File_set_errhandler' (for files), and 'MPI_Win_set_errhandler' (for RMA windows). The MPI-1 routine 'MPI_Errhandler_set' may be used but its use is deprecated. The predefined error handler 'MPI_ERRORS_RETURN' may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error; however, MPI implementations will attempt to continue whenever possible.

  • MPI_SUCCESS - No error; MPI routine completed successfully.

  • MPI_T_ERR_INVALID - Invalid use of the interface or bad parameter values(s).

  • MPI_T_ERR_INVALID_HANDLE - The handle is invalid.

  • MPI_T_ERR_INVALID_SESSION - Session argument is not valid.

  • MPI_T_ERR_NOT_INITIALIZED - The MPI tool information interface is not initialized.

  • MPI_T_ERR_PVAR_NO_ATOMIC - The performance variable can not be read/write atomically.

  • MPI_ERR_OTHER - Other error; use 'MPI_Error_string' to get more information about this error code.