Lecture2_Chap1B - ECE/CSE 201 Spring 2009 Lecture 2...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ECE/CSE 201 Spring 2009 Lecture 2 Performance, power wall, sea change Read: Sections 1.4-1.9 Performance and Cost ° Purchasing perspective • Which machines have - best performance ?- least cost ?- best performance / cost ? Performance and Cost ° Purchasing perspective • Which machines have - best performance ?- least cost ?- best performance / cost ? ° Design perspective • Which design options have - best performance improvement ?- least cost ?- best performance / cost ? Performance and Cost ° Purchasing perspective • Which machines have - best performance ?- least cost ?- best performance / cost ? ° Design perspective • Which design options have - best performance improvement ?- least cost ?- best performance / cost ? ° Both require • basis for comparison • metric for evaluation Performance and Cost ° Purchasing perspective • Which machines have - best performance ?- least cost ?- best performance / cost ? ° Design perspective • Which design options have - best performance improvement ?- least cost ?- best performance / cost ? ° Both require • basis for comparison • metric for evaluation ° Different metrics give different “best”—consider airplane analog Airplane Passengers Range Speed Throughput number miles mph passengers x mph Boeing 747 470 4,150 610 286,700 Concorde 132 4,000 1,350 178,200 DC-8-50 146 8,720 544 79,424 Which is “BEST”? p. 28 Airplane Passengers Range Speed Throughput number miles mph passengers x mph Boeing 747 470 4,150 610 286,700 Concorde 132 4,000 1,350 178,200 DC-8-50 146 8,720 544 79,424 Which is “BEST”? Longest life time longest range, longest battery life p. 28 Airplane Passengers Range Speed Throughput number miles mph passengers x mph Boeing 747 470 4,150 610 286,700 Concorde 132 4,000 1,350 178,200 DC-8-50 146 8,720 544 79,424 Which is “BEST”? Gets there the quickest. Finishes first. Response time = execution time = latency. p. 28 Airplane Passengers Range Speed Throughput number miles mph passengers x mph Boeing 747 470 4,150 610 286,700 Concorde 132 4,000 1,350 178,200 DC-8-50 146 8,720 544 79,424 Which is “BEST”? Accomplishes the most Throughput = bandwidth p. 28 Airplane Passengers Range Speed Throughput number miles mph passengers x mph Boeing 747 470 4,150 610 286,700 Concorde 132 4,000 1,350 178,200 DC-8-50 146 8,720 544 79,424 Which is “BEST”? Response time Takes how long? Throughput How much done? Life time Lasts how long ? p. 28 How long it can run battery life (not considered much in P&H) Which has highest performance? How long it can run battery life (not considered much in P&H) Time to do the task execution time, response time, latency Which has highest performance? How long it can run battery life (not considered much in P&H) Time to do the task execution time, response time, latency Tasks per day, hour, week, sec, ns....
View Full Document

This note was uploaded on 01/21/2009 for the course CSE 201 taught by Professor Man during the Spring '09 term at Lehigh University .

Page1 / 45

Lecture2_Chap1B - ECE/CSE 201 Spring 2009 Lecture 2...

This preview shows document pages 1 - 14. Sign up to view the full document.

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