PPT-Memory Management We have seen how CPU can be shared by a set of processes

Improve system performance Process management Need to keep several process in memory Share memory Learn various techniques to manage memory Hardware dependent Memory management Memory management. Shared memory. Process A. Process B. Physical Memory. Virtual address space A. Virtual address space B. Share. Share. Share. Instruction memory. Data. Instruction memory. Data. Create a shared memory region. Rev. by Kyungeun Park, 2015. Chapter 3: Processes. Process Concept. Process Scheduling. Operations on Processes: creation, termination, scheduling, communication. Inter Process Communication (IPC). Examples of IPC Systems. : A New OS Architecture for Scalable . M. ulticore . S. ystems. By (last names): Baumann, . Barham. , . Dagand. , Harris, Isaacs, Peter, Roscoe, . Schupbach. , . Singhania. EECS 582 – W16. 1. Presented by: Clyde Byrd III. Hakim Weatherspoon. CS 3410, Spring 2013. Computer Science. Cornell University. P&H Chapter 2.11 and 5.8. Big Picture: Parallelism and Synchronization. How do I take advantage of multiple processors; . Chapter 7. 2. Roadmap. M. emory management . Objectives. . Requirements. Simple memory management. . Memory partitioning. . Fixed partitioning. . Dynamic partitioning. . Address translation. CSSE 332. Operating Systems. Rose-Hulman Institute of Technology. Independent vs cooperating processes. A process is independent if it cannot affect or be affected by other processes. Does not share data with other processes. Clocks. External clock synchronization (. Cristian. ). Internal clock synchronization (. Gusella. & . Zatti. ). Network Time Protocol (Mills). Decisions. Agreement protocols (Fischer). Data. Distributed file . Memory systems. Memory tasks. Terms. The Brain. Forgetting. Improving memory. The Three Processes of Memory. Encoding. Storage. Retrieval. (TOT). The Three Memory Systems. 1.Sensory memory . Yao Wang, Andrew . Ferraiuolo. , G. Edward . Suh. Feb 17. th. 2014. Executive Summary. Observation:. Modern computing systems are vulnerable to . timing channel attacks. Problem: . No hardware techniques exist to eliminate timing channels through . Part 2: Paging Algorithms and. Implementation Issues. Chapter 4. 2. CS 1550, cs.pitt.edu (originaly modified by Ethan L. Miller and Scott A. Brandt). Page replacement algorithms: summary. Algorithm. Week 8 – Discussion Section.   . Atefeh Sohrabizadeh. atefehsz@cs.ucla.edu. 11/22/19. Agenda. Virtual Memory. Threading and Basic Synchronization. Virtual Memory. As demand on the CPU increases, processes slow down. Outline. Centralized Database Systems. Server System Architectures. Parallel Systems. Distributed Systems. Network Types. Centralized Database Systems. Run on a single computer system. Single-user system. Hagersten. , . Landin. , and . Haridi. (1991). Presented by Patrick . Eibl. Outline. Basics of Cache-Only Memory Architectures. The Data Diffusion Machine (DDM). DDM Coherence Protocol. Examples of Replacement, Reading, Writing. Lecture 19. April . 4. th. , . 2012. Bus-Based Shared Memory (. Con’t. ). Distributed Shared Memory. Prof John D. Kubiatowicz. http://www.cs.berkeley.edu/~kubitron/cs252. Recall: Natural Extensions of Memory System.