PPT-Virtual Memory Hardware

Outline Introduction to virtual memory Paging MMU Page tables 2 Problems with Simple Memory Mgmt A simple memory management scheme allocates contiguous physical memory to programs Problems. 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 Memory. Supporting Large Transactions. Anvesh. . Komuravelli. Abe Othman. Kanat. . Tangwongsan. Hardware-based. . Concurrent Programs. obj.x. = 7;. find_primes. ();. // intrusion test. if (. obj.x. U . Wisc. and HP Labs. ISCA’13. Architecture Reading Club Summer'13. 1. Key points. Big memory workloads . Memcached. , databases, graph analysis . Analysis shows. TLB misses can account for . upto. 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 . Hardware vs. Software. Hardware includes. CPU = central processing unit. Memory = RAM (random access memory). Input = Keyboard, mouse, microphone. Output = Screen, speaker, printer. Storage = Hard drive, DVD, Solid State. Virtual World pros & cons Outline Virtual Reality Virtual World Second Life Pros & Cons How Second life Affects Real Life Are we ready to live in a Virtual World? Virtual Reality Virtual reality (VR) is a powerful technique that uses computer representations to transform people's sense of presence, so that they feel themselves to be in a virtual environment rather their current one. 15-213: Introduction to Computer Systems . 16. th. . Lecture, Oct. . 22. , 2013. Instructors:. . Randy Bryant, Dave . O’Hallaron. , and Greg . Kesden. Today . Address spaces. VM as a tool for caching. 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 =. Mikhail . Gorobets, Oleksandr . Bazhaniuk, Alex . Matrosov,. Andrew Furtak, Yuriy Bulygin. Advanced . Threat . Research. Agenda. Hypervisor based isolation. Firmware rootkit . vs . hypervisor. Attacking hypervisor emulation of hardware devices. Perigon Live, a leading provider of digital event software, announces the addition of the Green Room to its feature-rich product. Visit: https://perigonlive.com If you are toying with the idea of hosting a virtual event to drive interest in a product, elevate your brand’s reputation, or simply build rapport with would-be clients, it’s important to note that a good virtual event requires at least some level of professional production in order to keep your attendees interested. Visit: https://perigonlive.com 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 .