Revision as of 14:22, 22 September 2021 edit Reidgreg (talk \| contribs) Autopatrolled, Extended confirmed users, Mass message senders 27,410 edits Adding local short description: "The equal sharing of all resources by multiple identical processors", overriding Wikidata description "multiprocessor architecture where two or more identical processors are connected to a single, shared main memory, have full access to all input and output devices, and are controlled by a single OS that treats all processors equally" (Shortdesc helper) ← Previous edit		Revision as of 06:45, 22 November 2021 edit undo Citation bot (talk \| contribs) Bots 5,871,534 edits Alter: title. Add: edition. \| Use this bot. Report bugs. \| Suggested by Whoop whoop pull up \| #UCB_webform 613/2035 Next edit →
Line 3: [[File:SMP - Symmetric Multiprocessor System.svg\|thumb\|upright=2\|Diagram of a symmetric multiprocessing system]] '''Symmetric multiprocessing''' or '''shared-memory multiprocessing'''<ref>{{cite book \|last1=Patterson \|first1=David \|last2=Hennessy \|first2=John \|author-link1=David Patterson (computer scientist) \|author-link2=John L. Hennessy \|date=2018 \|title=Computer Organisation and Design: The Hardware/Software Interface ~~(RISC-V Edition)~~ \|___location=Cambridge, United States \|publisher=Morgan Kaufmann \|page=509 \|isbn=978-0-12-812275-4\|edition=RISC-V }}</ref> ('''SMP''') involves a [[multiprocessor]] computer hardware and software architecture where two or more identical processors are connected to a single, shared [[main memory]], have full access to all input and output devices, and are controlled by a single operating system instance that treats all processors equally, reserving none for special purposes. Most multiprocessor systems today use an SMP architecture. In the case of [[multi-core processor]]s, the SMP architecture applies to the cores, treating them as separate processors. Professor John D. Kubiatowicz considers traditionally SMP systems to contain processors without caches.<ref>{{cite conference\|url=https://parlab.eecs.berkeley.edu/2013bootcampagenda\|conference=2013 Short Course on Parallel Programming\|author=John Kubiatowicz\|title=Introduction to Parallel Architectures and Pthreads}}</ref> Culler and Pal-Singh in their 1998 book "Parallel Computer Architecture: A Hardware/Software Approach" mention: "The term SMP is widely used but causes a bit of confusion. [...] The more precise description of what is intended by SMP is a shared memory multiprocessor where the cost of accessing a memory ___location is the same for all processors; that is, it has uniform access costs when the access actually is to memory. If the ___location is cached, the access will be faster, but cache access times and memory access times are the same on all processors."<ref>{{cite book\|isbn=978-1558603431\|author1=David Culler\|author-link1=David Culler\|author2=Jaswinder Pal Singh\|author3=Anoop Gupta\|title=Parallel Computer Architecture: A Hardware/Software Approach\|url=https://books.google.com/books?id=MHfHC4Wf3K0C&pg=PA32\|page=47\|year=1999\|publisher=[[Morgan Kaufmann]]}}</ref>

Symmetric multiprocessing: Difference between revisions