The scheduler hard off-load parameter is a CPU bitmask parameter.
    The bits correspond to CPU IDs. For any bit set, the OpenVMS
    scheduler does not schedule processes on this CPU unless the
    process has hard affinity set for the CPU. In addition, a process
    with the PRIMARY capability requirement will ignore the bit
    corresponding to the primary CPU.

    SCH_HARD_OFFLD is a DYNAMIC parameter.