Difference between two types of multiprocessing systems
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8.1.2 Multiprocessor Operating System Types
Let us now turn from multiprocessor hardware to multiprocessor software, in particular, multiprocessor operating systems. Various organizations are possible. Below we will study three of them.
Each CPU Has Its Own Operating System
The simplest possible way to organize a multiprocessor operating system is to statically divide memory into as many partitions as there are CPUs and give each CPU its own private memory and its own private copy of the operating system. In effect, the n CPUs then operate as n independent computers. One obvious optimization is to allow all the CPUs to share the operating system code and make private copies of only the data,
Let us now turn from multiprocessor hardware to multiprocessor software, in particular, multiprocessor operating systems. Various organizations are possible. Below we will study three of them.
Each CPU Has Its Own Operating System
The simplest possible way to organize a multiprocessor operating system is to statically divide memory into as many partitions as there are CPUs and give each CPU its own private memory and its own private copy of the operating system. In effect, the n CPUs then operate as n independent computers. One obvious optimization is to allow all the CPUs to share the operating system code and make private copies of only the data,
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