2.2  The Galaxy Software Architecture on OpenVMS

  Compaq's first implementation of the APMP model of com-
  puting is the Galaxy Software Architecture on OpenVMS,
  which uses APMP to execute multiple instances of OpenVMS
  in a single computer.

  Software logically partitions   CPUs, memory, and I/O ports
  by assigning them to individual instances of the OpenVMS
  operating system.  This partitioning, which a system man-
  ager directs, is a software function; no hardware boundaries
  are required.  Each individual  instance   has the resources it
  needs to execute independently.  An OpenVMS Galaxy envi-
  ronment is  adaptive   in that resources such as CPUs can be
  dynamically reassigned to different instances of OpenVMS.