Activating Computer Architecture with Classroom Presenter

1
Activating Computer Architecture withClassroom
Presenter
Not normal talk Important features of
system Basic setup for using system Example of
how used in arch class

• Beth Simon
• University of San Diego
• Richard Anderson, Steven Wolfman
• University of Washington

Thank Dean and Larry for architecture slides
2
Classroom Presenter

• System to allow for dynamic presentation of
  PowerPoint-style slides
• High-quality Tablet PC-based inking
• Wireless network connectivity
• Supports separation of views
• Instructor has one view on Tablet
• Students have a different view on projector
• Review of use in a small undergraduate Patterson
  and Hennessey-style architecture class
• Sophomore level, small classes (10-20)

Microsoft UW
But orig for LARGE class
6,000 undergrads Liberal arts 20 majors a year
3
Basic Class Setup

• Instructor has wireless Tablet PC and a deck of
  slides
• Prepared in PPT, exported to a Presenter deck
• Runs Presenter in Instructor mode
• Exports deck
• Regular machine drives projector
• Runs Presenter in Viewer mode
• Requests active deck
• Slides are wirelessly transferred to projecting
  machine
• Slide deck on viewer controlled wirelessly by
  instructor tablet

4
Classroom Presenter Highlights

• Spontaneity
• Inking over for emphasis
• Providing additional information
• Slide shrink
• Erasing
• Solving problems interactively
• Control
• Filmstrip and preview
• Whiteboard
• Instructor Notes
• Notes on how to explain concept
• Answers to problems

Demo this
LASTPLUG IN TABLET BEGIN DEMO
LAST Show filmstrip And whiteboard FIRST
5
Time versus throughput

• Execution time is measured in time units/job.
• For a SINGLE PROGRAM to execute on a system,
  usually in a dedicated environment
• Throughput is measured in jobs/time unit.
• Total amount of work (multiple jobs) done by a
  computer for a given amount of time.
• But time 1/throughput may be false.
• It takes 4 months to grow a tomato.Can you only
  grow 3 tomatoes a year ??

NO!
If you run only one job at a time,
time 1/throughput
6
SPEC on Pentium III and Pentium 4
Start with LEFT
INK SAVING
ET IC CPI 1/CR -CTdoubling the GHz doesnt
double the SPEC number -IC Bigger improvement on
P4 on FP (SSE/2 instruction set stack registers
to regular FP register set had to recompile to
use these instruction sets)

• What do you notice?

7
Amdahls Law Practice

• Way cool biological modeling code
• 4 days ET on current machine, spends 20 of time
  doing integer instructions
• How much faster must you make the integer unit to
  make the code run 8 hours faster?

ETnew ETold affected/ speedup ETold
unaffected (96-8) .296/x (96-.296) 88
19.2 /x 76.8 11.2 19.2/x X 1.714
Lets say original integer unit takes 3ns ET(old)
1.714ET(new) X 1.75ns
8
lw without the displacement
LW inst DISP empty
RedPC Blue Dest Green Source
9 control lines You must show values for all
What if I want to Support both styles of lw/sw?
Jump Branch MemRead MemWrite
0 0 1 0
ALUSrc ALUOp MemToReg RegWrite RegDest
X X 1 1 0
9
Upcoming Classroom Presenter Features

• Private Inking
• Notes you take to yourself in class
• Additional instructor notes off-screen
• Pulled directly from PPT notes field
• Shown filmstrip-view style
• Tablets for Students
• Group problem solving
• Quick display and markup
• Wireless Projectors
• Large Classroom-specific
• Classroom Feedback System (implemented)
• Structured Interaction

Some avail, not sure of interface
10
Where to get it

• Download Presenter from
• http//www.cs.washington.edu/education/dl/present
  er/
• 1.1.03 most stable
• No integrated instructor mode objects
• Personally had few problems with Integrated IMode
  and PPT add in
• Toolbar changes wont stay
• Please register with wolf_at_cs.washington.edu
• Acknowledgements
• UW Educational Technology Group (Richard
  Anderson)

Demo PPT? Review 4 view modes
11
Brainstorming SessionHow would you use this
technology?
12
Classroom Feedback System
OPTIONAL

• Problem Student feedback does not scale
• If method does scale, how does instructor handle
  load?
• Solution Embed clickable simple feedback options
  in slide deck received by students
• Example, More Information, Got It
• Students can click on current or previous slide
• Request shows up color coded on instructor
  slide
• SIP Structured Interaction Presentation
• Greatly enhance student interaction options
• Allow large numbers of students to participate in
  pre-planned problem solving,
• provide way of analyzing and aggregating the data
  quickly for use in discussion

13
Student provides feedback
highlighter circle
14
Instructor receives feedback
anonymized, aggregated
one of many visual representa-tions
15
SIP Example
16
Example America Before Columbus Cross and
Angelo

• How many people lived in North America in 1491?
• How many years had they been there by 1491?
• What significant achievements had they made in
  that time?

17
Your Impressions of America Before Columbus

• About how many people lived in North America in
  1491?
• About how many years had they been on this
  continent by 1491?
• What significant achievements had they made in
  that time?

18
Your Impressions of America Before Columbus

• About how many people lived in North America in
  1491?
• About how many years had they been on this
  continent by 1491?
• What significant achievements had they made in
  that time?

completed
completed
completed
19
How many people?
0 10 100 1000 10,000 100,000 1,000,000 10,000,000
from
to
400
2,500,000
Rachel found, 110 million for N S Am. early
ests. at 1 million
decide whether to cover natural language,
computing with classroom audience
20
(No Transcript)
21
(No Transcript)
22
Solving Natural Language

• Problem handling free text responses in class is
  impractical
• Solution distributed student computation
• allows rapid, in-class turnaround
• Via wireless submission, database queries