EE466_L04

EE466_L04 - Technology Trends + Quantitative Comparisons...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Monday August 31, 2009 Based in part th Edition Technology Trends + Quantitative Comparisons b Technology Trends: We need to be able to anticipate and exploit advances in technology – so look at history b Careful, quantitative comparisons: 1. Define, quantify, and summarize relative performance 2. Define and quantify relative cost 3. Define and quantify dependability 4. Define and quantify power
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Monday August 31, 2009 Based in part th Edition Moore’s Law: 2X transistors / “year” b “Cramming More Components onto Integrated Circuits” s Gordon Moore, Electronics, 1965 b # on transistors / cost-effective integrated circuit double every N months (12 ≤ N ≤ 24)
Background image of page 2
Monday August 31, 2009 Based in part th Edition Tracking Technology Performance Trends b Take a look at 4 technologies: s Disks, Memory, Network, Processors b Compare ~1980 Archaic vs. ~2008-9 “Modern” s Performance Milestones in each technology b Compare for Bandwidth vs. Latency improvements in performance over time b Bandwidth: number of events per unit time s E.g., M bits / second over network, M bytes / second from disk b Latency: elapsed time for a single event s E.g., one-way network delay in microseconds, average disk access time in milliseconds
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Monday August 31, 2009 Based in part th Edition Disks: Archaic v. “Modern” (Data from the text) b Seagate 373453, 2003 b 15000 RPM (4X) b 73.4 GBytes (2500X) b Tracks/Inch: 64000 (80X) b Bits/Inch: 533,000 (60X) b Four 2.5” platters (in 3.5” form factor) b Bandwidth: 86 MBytes/sec (140X) b Latency: 5.7 ms (8X) b Cache: 8 MBytes b CDC Wren I, 1983 b 3600 RPM b 0.03 GBytes capacity b Tracks/Inch: 800 b Bits/Inch: 9550 b Three 5.25” platters b Bandwidth: 0.6 MBytes/sec b Latency: 48.3 ms b Cache: none
Background image of page 4
Monday August 31, 2009 Based in part th Edition Disks: 2009 Choices: Hard drives b Seagate Barracuda ES.2 b 7200 RPM b 1 TByte (1000 GBytes) b Tracks/inch: 150 K avg b Bits/inch: 1090 K b Four 3.5" platters, 8 heads b Bandwidth: 116 MB/sec sustained b Latency: 4.16 ms b Cache: 32 Mbytes b Cost: as low as $152 (last year $279) b Seagate Saavio 15K b 15000 RPM b 73 GBytes b Tracks/inch: 150 K avg b Bits/inch: 862 K b Two 2.5” platters, 4 heads b Bandwidth: 79-112 MB/sec sustained b Latency: 2.0 ms b Cache: 16 MBytes b Cost: as low as $80 (last year, $250)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Monday August 31, 2009 Based in part th Edition And what about SSD? b
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 21

EE466_L04 - Technology Trends + Quantitative Comparisons...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online