ECS 150 – Concurrency and threads Prof. Joël Porquet-Lupine UC Davis – 2020/2021 Copyright © 2017-2021 Joël Porquet-Lupine – CC BY-NC-SA 4.0 International License / 1 / 33 Concurrency Definition Concurrency is the composition of independently executing tasks Tasks can start, run, complete in overlapping time periods Opposite to sequential execution Process concurrency Decompose complex […]
ECS 150 – Synchronization Prof. Joël Porquet-Lupine UC Davis – 2020/2021 Copyright © 2017-2021 Joël Porquet-Lupine – CC BY-NC-SA 4.0 International License / 1 / 36 Threads (recap) Memory sharing Private processor registers Private stack Shared global memory Type of sharing Independent Cooperating Threads work on same areas of shared data Threads work on distinct
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PowerPoint Presentation © M. Winter COSC 2P05 – Programming languages 1.* COSC 2P05 Programming Languages Instructor: Michael Winter Office: MCC J323 Email: mwinter@brocku.ca Lecture: Mon & Thu, 14:00-15:30 online in Lifesize Course web page: www.cosc.brocku.ca/~mwinter/Courses/2P05/ Textbook: Sebesta, Robert W. Concepts of Programming Languages (12th edition) Pearson, 2019 ISBN: 9780135102268 * © M. Winter COSC 2P05
Scientific American: The Semantic Web May 17, 2001 The Semantic Web A new form of Web content that is meaningful to computers will unleash a revolution of new possibilities By Tim Berners-Lee, James Hendler and Ora Lassila The entertainment system was belting out the Beatles’ “We Can Work It Out” when the phone rang. When
Wait-Free Synchronization MAURICE HERLIHY Digital Equipment Corporation Au,a,zt-free implementation ofa concurrent data object is one that guarantees that any process can complete any operation in a finite number of’ steps, regardless of the execution speeds of the other processes. The problem ofconstructinga wait-free implementation of one data object from another lies at the heart of
Concurrency and Parallelism Objectives • Understand the concepts of concurrency and parallelism. Copyright By PowCoder代写 加微信 powcoder • Understand the terms of critical section, mutual exclusion, race condition, deadlock, livelock, starvation • Be aware of tools for enforcing mutual exclusions • Be aware of the strategies for tackling deadlock: prevention, avoidance and detection • Understand
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UCLA CS 131 lecture 2021-01-05 Core of this class (core of programming languages) 1. Principles and limitations of programming models. 2. Notations for these models, design + use + support for the above. 3. How to evaluate strengths + weaknesses in various contexts. Let¡¯s do a quiz (won¡¯t count for a grade). Write a program
Lecture 4: Instructions: Language of the Computer (3/3) John Owens Introduction to Computer Architecture UC Davis EEC 170, Winter 2021 From last time … ▪ What instructions look like – RISC-V: 32 bit instructions, dierent types (R, I, S, and more) – RISC-V: Instructions either compute something or move something to/from memory – Last lecture:
Update, Delete and Transaction Management MODIFYING ROWS USING UPDATE AND DELETE 2 UPDATE ▪ Changes the value of existing data. ▪ For example, at the end of semester, change the mark and grade from null to the actual mark and grade. UPDATE enrolment SET mark = 80, grade =’HD’ WHERE sno = 112233 and ……
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Update, Delete and Transaction Management MODIFYING ROWS USING UPDATE AND DELETE 2 UPDATE ▪ Changes the value of existing data. ▪ For example, at the end of semester, change the mark and grade from null to the actual mark and grade. …… 3 • 4 TRANSACTIONS 5 Transactions ▪ Consider the following situation. Sam is
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