PPT-A Cache-Like Memory Organization

for 3D memory systems CAMEO 12152014 MICRO Cambridge UK Chiachen Chou Georgia Tech Aamer Jaleel Intel Moinuddin K Qureshi Georgia Tech Executive Summary How to use S tacked DRAM Cache or Memory. 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 Here we focus on cache improvements to support at least 1 instruction fetch and at least 1 data access per cycle. With a superscalar, we might need to accommodate more than 1 per cycle. Typical server and . Mark Gebhart. 1,2 . Stephen W. Keckler. 1,2. Brucek Khailany. 2. Ronny Krashinsky. 2. . William J. Dally. 2,3. 1. The University of Texas at Austin . 2. NVIDIA . 3. Stanford University. Methodology. Memory and Performance. Many . of the following slides are taken with permission from . Complete . Powerpoint. Lecture Notes for. Computer Systems: A Programmer's Perspective (CS:APP). Randal E. Bryant. Memory Wall . The . growing disparity of speed between CPU and memory outside the CPU . chip. Bandwidth wall: limited . communication bandwidth beyond chip . boundaries. Solution . Memory hierarchy . Aakash. . Sabharwal. Section J. October. 7. th. , 2013. Welcome to the World of Pointers !. Class Schedule. Cache Lab. Due Thursday.. Start now ( if you haven’t already ). Exam Soon !. Start doing practice problems.. and Architecture. 9. th. Edition. Chapter 4. Cache Memory. Key Characteristics of Computer Memory Systems. Table 4.1 Key Characteristics of Computer Memory Systems. . Characteristics of Memory Systems. Table 4.1 . Key . Characteristics of Computer Memory Systems. . © 2016 Pearson Education, Inc., Hoboken, NJ. All rights reserved.. Characteristics of Memory Systems. Location. Refers to whether memory is internal and external to the computer. :. What is Cache Coherence?. When one Core writes to its own cache the other core gets to see it, when they read it out of its own cache.. Provides underlying guarantees for the programmer with respect to data validation.. 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. Lecture for CPSC 5155. Edward Bosworth, Ph.D.. Computer Science Department. Columbus State University. The Simple View of Memory. The simplest view of memory is . that presented . at the ISA (Instruction Set Architecture) level. At this level, memory is a . sharedmemory architectures Adapted from a lecture by Ian Watson, University of Machester Overview We have talked about optimizing performance on single coresLocalityVectorizationNow let us look at opt 2. Educational objectives The MESI protocol simulator is widely used in several courses about Computer Architecture, Computer Design and Multiprocessor Systems in the University of Cordoba. The syllab The basic objective of a computer system is to increase the speed of computation. Likewise, the basic objective of a memory system is to provide fast, uninterrupted access by the processor to the memory such that, the processor can operate at its expected speed. .