OpenVMS Alpha Galaxy Guide
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  2.1  A New Computing Model and a New Software
       Architecture

  Adaptive partitioned multiprocessing (APMP)            is a new
  model of computing in which multiple instances of oper-
  ating systems execute cooperatively in a single computer.

  With APMP, processors (and other physical resources) are
  partitioned in order to run multiple instances of operating
  systems.

  APMP is another form of multiprocessor computing like
  symmetric multiprocessing (SMP) and massively parallel
  processing (MPP). For example, with two identical comput-
  ers (the hardware is the same), one could run as an SMP
  system and the other could run as an APMP system.

  The  Galaxy Software Architecture        is the complemen-
  tary architecture that leverages Adaptive Partitioned

  Multiprocessing (APMP) capabilities.  The Galaxy
  Architecture provides the software structure and opera-
  tion components that fully exploit the APMP computing
  model.
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