CS 241: Operating System Lecture 4 - Threads & Concurrency
17 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What type of parallelism involves distributing subsets of the same data across multiple cores, with the same operation performed on each?

  • Data parallelism (correct)
  • Task parallelism
  • Serial processing
  • Multicore programming

    • What is the purpose of Amdahl's Law?

  • To measure the performance gain from adding more processing cores (correct)
  • To compare the performance of different multicore systems
  • To determine the optimal number of processing cores for an application
  • To identify the serial components of an application

    • What is the term for distributing threads across cores, each thread performing a unique operation?

  • Multicore programming
  • Task parallelism (correct)
  • Data parallelism
  • Serial processing

    • What is the variable 'S' in Amdahl's Law formula?

    <p>The portion of the application that must be performed serially</p> Signup and view all the answers

    What is the result of running an application with 75% parallelism and 25% serial components on a system with two processing cores?

    <p>A speedup of 1.5</p> Signup and view all the answers

    What is a major advantage of using threads instead of processes in a multithreaded server architecture?

    <p>Lightweight thread creation</p> Signup and view all the answers

    What is a major limitation of using a single-threaded process to service client requests in a web server?

    <p>Long wait times for clients</p> Signup and view all the answers

    What is an advantage of using a multithreaded web server over a single-threaded process?

    <p>Ability to service multiple clients concurrently</p> Signup and view all the answers

    What is a common use case for multithreaded applications?

    <p>Update display, fetch data, and spell checking</p> Signup and view all the answers

    Why is process creation a less desirable approach in a multithreaded server architecture?

    <p>It is time consuming and resource intensive</p> Signup and view all the answers

    What is a major characteristic of kernels in modern operating systems?

    <p>Multithreaded</p> Signup and view all the answers

    What is the primary benefit of a multithreaded server architecture?

    <p>Enhanced responsiveness</p> Signup and view all the answers

    How do threads share resources by default?

    <p>By sharing the memory and resources of the process</p> Signup and view all the answers

    What is the primary challenge of multicore programming?

    <p>All of the above</p> Signup and view all the answers

    What is a key difference between concurrency and parallelism?

    <p>Concurrency involves multiple tasks on a single core, while parallelism involves multiple tasks on multiple cores</p> Signup and view all the answers

    What is the primary advantage of thread creation over process creation?

    <p>Threads have lower overhead and are cheaper to create</p> Signup and view all the answers

    What is the primary benefit of resource sharing in multithreaded applications?

    <p>Code and data sharing</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser