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Guy Harris (talk | contribs) →History: Link Model 65, capitalize "Model" in both M65 and M67 (that's how IBM did it). |
Guy Harris (talk | contribs) →Advantages/Disadvantages: They weren't, in fact, in a single box; each CPU had its own box. |
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== Advantages/Disadvantages ==
In current SMP systems, all of the processors are tightly coupled inside the same box with a bus or switch; on earlier SMP systems, a single CPU took an entire cabinet. Some of the components that are shared are global memory, disks, and I/O devices. Only one copy of an OS runs on all the processors, and the OS must be designed to take advantage of this architecture. Some of the basic advantages involves cost-effective ways to increase throughput. To solve different problems and tasks, SMP applies multiple processors to that one problem, known as [[parallel programming]].▼
▲Some of the components that are shared are global memory, disks, and I/O devices. Only one copy of an OS runs on all the processors, and the OS must be designed to take advantage of this architecture. Some of the basic advantages involves cost-effective ways to increase throughput. To solve different problems and tasks, SMP applies multiple processors to that one problem, known as [[parallel programming]].
However, there are a few limits on the scalability of SMP due to [[cache coherence]] and shared objects.
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