By David A. Patterson, John L. Hennessy

Computing device structure: A Quantitative method explores the ways in which software program and expertise within the cloud are accessed by way of electronic media, corresponding to cellphones, pcs, pills, and different cellular units. The ebook turned part of Intel's 2012 suggested studying checklist for builders, and it covers the revolution of cellular computing. The textual content additionally highlights the 2 most vital elements in structure this day: parallelism and reminiscence hierarchy. The six chapters that this publication consists of keep on with a constant framework: clarification of the tips in each one bankruptcy; a "crosscutting issues" part, which offers how the options lined in a single bankruptcy connect to these given in different chapters; a "putting all of it together" part that hyperlinks those ideas by way of discussing how they're utilized in genuine desktop; and certain examples of misunderstandings and architectural traps generally encountered via builders and designers.

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72 2 Energy old Voltage thereby reducing energy to about 72% of the original. 61 Power old Frequency switched shrinking power to about 61% of the original. 24 ■ Chapter One Fundamentals of Quantitative Design and Analysis As we move from one process to the next, the increase in the number of transistors switching and the frequency with which they switch dominate the decrease in load capacitance and voltage, leading to an overall growth in power consumption and energy. 3 GHz Intel Core i7 consumes 130 watts.

8 shows. There is even concern as whether the growth rate will stop in the middle of this decade due to the increasing difficulty of efficiently manufacturing even smaller DRAM cells [Kim 2005]. Chapter 2 mentions several other technologies that may replace DRAM if it hits a capacity wall. 8 Change in rate of improvement in DRAM capacity over time. The first two editions even called this rate the DRAM Growth Rule of Thumb, since it had been so dependable since 1977 with the 16-kilobit DRAM through 1996 with the 64-megabit DRAM.

An inspiring example is Google Goggles. This application lets you hold up your cell phone to point its camera at an object, and the image is sent wirelessly over the Internet to a warehouse-scale computer that recognizes the object and tells you interesting information about it. It might translate text on the object to another language; read the bar code on a book cover to tell you if a book is available online and its price; or, if you pan the phone camera, tell you what businesses are nearby along with their websites, phone numbers, and directions.

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