Distributed Virtual Memory Systems (DVMs) are extremely complex.
   Much work has been done on them. The problem we are currently
   facing is that there are no truly adaptable Distributed Virtual
   (Shared) Memory systems.  As a result, lots of different
   (incompatible) DVMs systems have been implemented and none of them
   is good for all kinds of applications due to the lack of
   adaptability and to their inability to deal with the diversity of
   applications found in a distributed system. 
    
   In recent years some approaches have dealt with this problem to
   some extent, like external pagers and application level virtual
   memory systems. However, they are not well suited for distributed
   systems and ignore the inherent hardware distribution in these
   systems.
    
   In this paper we describe the design and implementation of a
   distributed virtual memory system named Advice, which has been
   designed for maximum flexibility and adaptability.  Advice
   runs out of the Off uKernel, providing a means through which
   distributed memory services can be dynamically adapted accordingly
   to the user needs.