VMS Help STOP, /CPU  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Stops the specified secondary processor or processors (and any
    associated vector processors). The /CPU qualifier is required.

    Applies only to OpenVMS multiprocessing systems. Requires CMKRNL
    (change mode to kernel) privilege.

    Format

      STOP/CPU  [cpu-id[,...]]

1 - Parameter

 cpu-id[,...]

    Specifies a decimal value representing the identity of a
    processor in an OpenVMS multiprocessing system. On a VAX 6000
    system or an Alpha 7000 system, the CPU ID is the backplane slot
    number of the processor. If you do not specify a CPU ID, the
    STOP/CPU command selects a processor in the current active set to
    stop.

2 - Qualifiers

 2.1 - /ALL

    Stops all eligible secondary processors in the system's active
    set.

 2.2 - /OVERRIDE_CHECKS

    Directs the STOP/CPU command to bypass a series of checks that
    determine whether the specified processor is eligible for removal
    from the active set.

3 - Examples

    1.$ STOP/CPU

      The STOP/CPU command in this example selects a processor and
      removes it from the multiprocessing system's active set.

    2.$ STOP/CPU 4,7

      The STOP/CPU command in this example selects the processors
      with CPU IDs 4 and 7 and removes them from the multiprocessing
      system's active set.

    3.$ STOP/CPU/OVERRIDE_CHECKS 8

      The STOP/CPU/OVERRIDE_CHECKS command in this example
      unconditionally stops the processor with the CPU ID of 8 and
      removes it from active participation in the multiprocessing
      system.

    4.$ STOP/CPU/ALL

      The STOP/CPU/ALL command in this example stops all eligible
      secondary processors in the active set and removes them from
      the multiprocessing system.