Basic CS-Operating System [TCS Placement]: Sample Questions 24 - 24 of 35

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Question 24

Operating System

Describe in Detail


What is SMP


  • SMP (symmetric multiprocessing) is the processing of programs by multiple processors that share a common operating system and memory.
  • To achieve maximum efficiency and reliability a mode of operation known as symmetric multiprocessing is used.
  • In essence, with SMP any process or threads can be assigned to any processor.
  • In symmetric (or “tightly coupled” ) multiprocessing, the processors share memory and the I/O bus or data path.
  • A single copy of the operating system is in charge of all the processors.
  • SMP, also known as a “shared everything” system, does not usually exceed 16 processors.
  • SMP is primarily implemented in resource-intensive computing environments that require high computing power to execute program and application tasks and processes.
  • This involves the joint installation of two or processors on one machine.
  • SMP combines hardware and software multiprocessing.
  • The hardware provides raw computing power, and the software manages the segregation, selection and distribution of the hardware processor.
  • SMP hardware capabilities deal with multiple processors, data buses and physical memory support.
  • SMP software capabilities are responsible for OS support, which manages the execution workload of application specific processes over the distributed processing architecture.
Given the Image is Define the Symmetric Multiprocessor System

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