single.dvi 15 Mechanism: Address Translation In developing the virtualization of the CPU, we focused on a general mechanism known as limited direct execution (or LDE). The idea be- hind LDE is simple: for the most part, let the program run directly on the hardware; however, at certain key points in time (such as when a […]
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COMP / Final Exam Student ID: u Time: minutes reading, minutes writing Totalmarks: Weighting: % Permittedmaterials: double-sided A cheat sheet Make sure you read each question carefully. Questions are not equally weighted, and the size of the answer box is not necessarily related to the length of the expected answer or the number of marks
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single.dvi 26 Concurrency: An Introduction Thus far, we have seen the development of the basic abstractions that the OS performs. We have seen how to take a single physical CPU and turn it into multiple virtual CPUs, thus enabling the illusion of multiple pro- grams running at the same time. We have also seen how
single.dvi 48 Distributed Systems Distributed systems have changed the face of the world. When your web browser connects to a web server somewhere else on the planet, it is par- ticipating in what seems to be a simple form of a client/server distributed system. When you contact a modern web service such as Google or
single.dvi 14 Interlude: Memory API In this interlude, we discuss the memory allocation interfaces in UNIX systems. The interfaces provided are quite simple, and hence the chapter is short and to the point1. The main problem we address is this: CRUX: HOW TO ALLOCATE AND MANAGE MEMORY In UNIX/C programs, understanding how to allocate and
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single.dvi F Laboratory: Tutorial This is a very brief document to familiarize you with the basics of the C programming environment on UNIX systems. It is not comprehensive or particularly detailed, but should just give you enough to get you going. A couple of general points of advice about programming: if you want to become
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single.dvi 16 Segmentation So far we have been putting the entire address space of each process in memory. With the base and bounds registers, the OS can easily relocate processes to different parts of physical memory. However, you might have noticed something interesting about these address spaces of ours: there is a big chunk of
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COPE-02 Hardware-Software Interface.indd 2 Hardware/Software Interface Uwe R. Zimmer – The Australian National University Computer Organisation & Program Execution 2021 Hardware/Software Interface © 2021 Uwe R. Zimmer, The Australian National University page 98 of 481 (chapter 2: “Hardware/Software Interface” up to page 150) References for this chapter [Patterson17] David A. Patterson & John L. Hennessy
single.dvi 27 Interlude: Thread API This chapter briefly covers the main portions of the thread API. Each part will be explained further in the subsequent chapters, as we show how to use the API. More details can be found in various books and online sources [B89, B97, B+96, K+96]. We should note that the subsequent
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6/30/2021 COMP 228 Final Exam https://moodle.concordia.ca/moodle/mod/quiz/attempt.php?attempt=2098947&cmid=2752114 1/9 Home / My courses / COMP-228-2211-AA / General / COMP 228 Final Exam Information At the bottom, there is room for you to upload scanned or photographed images of your work. Please allow yourself enough time at the end of the exam to scan or photograph your work
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