NPAGERAD

   (Alpha and Integrity servers) NPAGERAD specifies the total number
   of bytes of nonpaged pool that will be allocated for Resource
   Affinity Domains (RADs) other than the base RAD. For platforms
   that have no RADs, NPAGERAD is ignored. Notice that NPAGEDYN
   specifies the total amount of nonpaged pool for all RADs.

   Also notice that the OpenVMS system might round the specified
   values higher to an even number of pages for each RAD, which
   prevents the base RAD from having too little nonpaged pool. For
   example, if the hardware is an AlphaServer GS160 with 4 RADs:

   NPAGEDYN = 6291456 bytes
   NPAGERAD = 2097152 bytes

   In this case, the OpenVMS system allocates a total of
   approximately 6,291,456 bytes of nonpaged pool. Of this amount,
   the system divides 2,097,152 bytes among the RADs that are not
   the base RAD. The system then assigns the remaining 4,194,304
   bytes to the base RAD.

                                  NOTE

      The system actually rounds up to an even number of pages
      on each RAD. In addition, the base RAD is never assigned a
      value less than the smaller of the value of NPAGEDYN and 4
      megabytes.

   On AlphaServer GS series processors on OpenVMS systems prior to
   Version 7.3-1, system managers frequently saw pool expansion that
   increasing NPAGEDYN did not reduce. This problem was caused by
   leaving NPAGERAD at its default value of 0.

   Starting with OpenVMS Version 7.3-1, when NPAGERAD is 0 (the
   default), the system calculates a value to use for NPAGERAD with
   the following formula:

                     Base RAD memory
      NPAGEDYN * (1- --------------- )
                      Total memory

   This calculation gives more pool to the non-base RADs than before
   and, therefore, reduces the expansion of non-base RADs.

   NPAGERAD has the GEN attribute.