论文信息 - Using Memory in the Cedar System

Using Memory in the Cedar System

The design of the virtual memory system for the Cedar multiprocessor under construction at the University of Illinois is discussed. The Cedar architecture features a hierarchy of memory, some shared by all processors, and some shared by subsets of processors. The Xylem operating system is based on Alliant Computer Systems CONCENTRIXTM operating system, which is based on 4.2BSD UNIXTM. Xylem supports multi-tasking and demand paging of parts of the memory hierarchy into a linear virtual address space. Memory may be private to a task or shared between all the tasks. The locality and attributes of a page may be modified during the execution of a program. Examples of how these mechanisms can be used are discussed.

Robert E. McGrath | Perry A. Emrath | R. McGrath | P. Emrath

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