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Virtual machine (VM) systems are a major development in computer systems design. By providing an efficient facsimile of one or more complete computer systems, virtual machines have extended the multi-access, multi-programming, multi-processing systems of the past decade to be multi-environment systems as well. Thus, many of the advantages in ease of system use previously enjoyed only by application programmers have been made available to systems programmers.
Robert P. Goldberg (Mon,) studied this question.