PPT-Flipping Bits in Memory Without Accessing Them

Yoongu Kim Ross Daly Jeremie Kim Chris Fallin Ji Hye Lee Donghyuk Lee Chris Wilkerson Konrad Lai Onur Mutlu DRAM Disturbance Errors DRAM Chip Row of Cells Row Row Row Row Wordline. Memory isolation is a key property of a reliable and secure computing system an access to one memory ad dress should not have unintended side e ects on data stored in other addresses However as DRAM process technology scales down to smaller dimensi Memory isolation is a key property of a reliable and secure computing system an access to one memory ad dress should not have unintended side e ects on data stored in other addresses However as DRAM process technology scales down to smaller dimensi Without Accessing Them Yoongu Kim Ross Daly, Jeremie Kim, Chris Fallin, Ji Hye Lee, Donghyuk Lee, Chris Wilkerson, Konrad Lai, Onur Mutlu DRAM Disturbance Errors DRAM Chip Row of Cells Row Row Row Ro Chapter 5 . Overview. Discuss the Types of System Units. Describe System Boards. Discuss Processors. Discuss Memory. Discuss Expansion Slots and Cards. Bus Lines, Bus Widths, Expansion Buses. Describe Ports. The organization of a simple computer with. one . CPU and two I/O devices.. Computer Systems Organization. The CPU (Central Processing Unit) is the “brain” of the computer.. Fetches instructions from main memory.. DRAM Disturbance Errors. Yoongu Kim. Ross Daly, Jeremie Kim, Chris Fallin, Ji Hye Lee, . Donghyuk Lee, Chris Wilkerson, Konrad Lai, Onur Mutlu. DRAM Chip. Row. Row. Row. Row. Row. Wordline. DRAM Chip. Prof. Kavita Bala and Prof. Hakim Weatherspoon. CS 3410, Spring 2014. Computer Science. Cornell University. See P&H Appendix 2.16 – 2.18, and 2.21. Survey. Lectures. Need to repeat student questions. However, smallest addressable unit is a Byte (8 bits). . bit 7 6 5 4 3 2 1 0. . . msb. . lsb. Most computers permit access of memory through words (16 bits, 32 bits or 64 bits). CSE 373 SP 18 - Kasey Champion. 1. Warm Up. public int sum1(int n, int m, int[][] table) {. int output = 0;. for (int . i. = 0; . i. < n; . i. ) {. for (int j = 0; j < m; . j . Prof. Hakim Weatherspoon. CS 3410, Spring 2015. Computer Science. Cornell University. See P&H Appendix 2.16 – 2.18, and 2.21. Announcements. There . is. a Lab Section this week, C-Lab2. Project1 (PA1) . and Storage . Read . Kleitz. , Chapter 16.. Lab . #14 . due next week.. Final Exam next week.. Bit. : The smallest unit of digital data, a single 1 or 0.. Byte. : A group of 8 bits.. Nibble. : A “half-byte”: a group of 4 bits.. Hakim Weatherspoon. CS 3410. Computer Science. Cornell University. The slides are the product of many rounds of teaching CS . 3410 . by Professors . Weatherspoon, . Bala. , Bracy. , . McKee, and . Sirer. Lecture 10: . . Datapath. . Instructor:. Sören Schwertfeger. http://shtech.org/courses/ca/. School of Information Science and Technology SIST. ShanghaiTech University. 1. Slides based on UC Berkley's CS61C. Prof. Onur Mutlu. Carnegie Mellon University. Main Memory Lectures. These slides are . from the . Scalable . Memory Systems. course . taught at . ACACES . 2013 (July 15-19, 2013). Course Website:. http.