PPT-Efficient Virtual Memory for Big Memory Servers

U Wisc and HP Labs ISCA13 Architecture Reading Club Summer13 1 Key points Big memory workloads Memcached databases graph analysis Analysis shows TLB misses can account for upto. Avg Access Time 2 Tokens Number of Controllers Average Access Time clock cyles brPage 16br Number of Tokens vs Avg Access Time 9 Controllers Number of Tokens Average Access Time clock cycles brPage 17br brPage 18br Hakim Weatherspoon. CS 3410, Spring 2011. Computer Science. Cornell University. P & H . Chapter. 5.4-5. Announcements. PA3 . available. Due . Tuesday, April 19. th. Work with . pairs. Be responsible with new knowledge. Use main memory as a “cache” for secondary (disk) storage. Managed jointly by CPU hardware and the operating system (OS). Programs share main memory. Each gets a private virtual address space holding its frequently used code and data. BYU CS 345. Virtual Memory. 2. Topics to Cover…. Program Execution Patterns. Computer Memory. Virtual Memory. Paging. Segmentation. Performance. Replacement Algorithms. Paging Improvements. Objectives. Apr 25, 2017. 1. Memory (Programmer. ’. s View) . 2. Hmmm, How Does This Work?! . Process 1. Process 2. Process n. Solution: Virtual Memory (today and next lecture). 3. Today . Virtual Memory: Concepts . Managed jointly by CPU hardware and the operating system (OS). Programs share main memory. Each gets a private virtual address space holding its frequently used code and data. Protected from other programs. 2017. Instructor:. . Ruth Anderson. Teaching Assistants:. Dylan Johnson. Kevin Bi. Linxing. Preston Jiang. Cody . Ohlsen. Yufang. Sun. Joshua Curtis. Administrivia. Midterms Graded. If you did not receive an email from . Virtual Memory Use main memory as a “cache” for secondary (disk) storage Managed jointly by CPU hardware and the operating system (OS) Programs share main memory Each gets a private virtual address space holding its frequently used code and data CS 3410, Spring 2012. Computer Science. Cornell University. P & H Chapter 5.4 . Goals for Today. Virtual Memory. Address Translation. Pages, page tables, and memory . mgmt. unit. Paging. Role of Operating System. CSE351 Winter 2013. Roadmap. 2. car *c = malloc(sizeof(car));. c->miles = 100;. c->gals = 17;. float mpg = get_mpg(c);. free(c);. Car c = new Car();. c.setMiles(100);. c.setGals(17);. float mpg =. Prof. Eric Rotenberg. 1. Fall 2018. ECE 463/563, Microprocessor Architecture, Prof. Eric Rotenberg. Virtual Memory. Every program has its own virtual memory. Large virtual address space. Divided into . Reducing Dimensionality of Nested Page Walks . Jayneel . Gandhi. , . Arkaprava. . Basu. ,. Mark D. . Hill, Michael . M. . Swift. MICRO-47 . Executive Summary. Problem: TLB misses in virtual machines. for Big Memory Servers. Arkaprava Basu. , . Jayneel. Gandhi, . Jichuan. Chang*, Mark D. Hill, Michael M. Swift. “. Virtual . Memory was invented in a time of scarcity. Is it still good idea?. ” . 17. th. Lecture, . November 1. , 2022. Instructors:. . Dave Andersen (15-213). Zack Weinberg (15-213). Brian Railing (15-513). David Varodayan (14-513). Review: Virtual Addressing. Each process has its own .