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Welcome to the encore offering of Computer
Architecture.

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I'm David Wentzlaff, I'm a professor

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at the Princeton Department of Electrical
Engineering.

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And my background is building mini core
and

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multi core microprocessors both in
academia and in industry.

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And for example, this is one of the

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microprocessors that I built while I was
in industry.

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And this is actually a 64 core multi-core
microprocessor.

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And that's actually put onto something
like this board here.

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And you can see actually that that chip is
under this heat sink on this board here.

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And in this course, you're going to be
learning how to

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build processors with, sort of complexity
on the order of this.

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We're not, in this course, trying to teach
you how to build basic processors.

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We will overview basic processors and
basic in order pipeline processors,

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but instead, in this course, we'll go into
much more detail about how to build

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out of order sequential processors, how do

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you build more advanced things, like
advanced caches?

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How do you go about building vector
processors?

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How do you exploit different

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types of parallelism, like instructional
parallelism?

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Thread level parallelism?

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Process level parallelism?
Vector parallelism, etc.?

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We'll also be going into detail about how
to build cache coherent systems.

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And at the end of the course, we'll be

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talking about how to build multi-core and
many-core microprocessors.

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And I wanted to point out that this course
is an advanced computer architecture

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course, so we'll be going into much more
detail, and we're going to be learning

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how to build the inner working components,

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for instance all the different structures
and

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all the different algorithms you need in

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order to build these advanced modern-day
microprocessors.

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And we won't be spending as much time
looking at

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how to build processors let's say from 20
or 30

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years ago.

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So in this on core offering, we're
going to

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be extending where we were for our first
offering.

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And in our first offering we had over
100,000 students registered.

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And this was really successful.

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We were very encouraged by this.

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And we want this offering to be just as
successful.

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So please, tell your friends.

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If you're sitting here at the beginning of
this class, watching this video, and

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saying I know of a friend who might
actually be helped by this course.

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Let them know.

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If they're interested in the field, let
them know.

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Also if you're taking a computer
architecture

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course at another university, and you
want to

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use a supplemental materials, please sign
up and tell your friends to sign up.

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We try to make this course also useful for

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people who are currently taking a course
at other Universities.

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So let's stop and take a look at the
philosophy of this course.

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So in this course we're trying to have a
high quality course

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similar to what we have at Princeton.

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And this course is going to be rigorous,
so we're going to use good

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text books, have hard problems, have a
hard mid-term and a hard final.

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Now the trade-off here is that because
this course is going to be

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so rigorous you're going to learn a lot
and it's going to be very rewarding.

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But unlike, you know, other courses where
it

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might just be a survey level course, this

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is going to go into the details, and the

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trade off there is you're going to learn
and

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be able to apply this information in the
future of your life.

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I wanted to, while we were talking about
rigor and sort of what goes about

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into a course, I want to talk about the
two recommended textbooks for this course.

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So the first recommended textbook is this
one here.

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It's called Patterson and Hennessy.

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you see that the two authors are Patterson
and Hennessey and

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the title of the book is Computer
Architecture A Quantitative Approach.

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We're going to be using the fifth edition
of this book, but

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for those of you who, and I highly
recommend the fifth edition.

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But for those of you who are not able to
acquire the

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fifth edition or it's too expensive you're
going, you can also go

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about and try to get the fourth edition of
the book, which

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has we'll, we'll be posting equivalent
pages out of the fourth edition.

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If they are valuable.

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So there's some topics which are covered
only in

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the fifth edition, but not in the fourth
edition.

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also I wanted to say we will also be
posting

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if there's a particular question that we
assign from a textbook.

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We'll be paraphrasing or, or copying the
entire question on there.

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We've had permission from the publisher to
do that.

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The second book for this course we're
going to be

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using is called Modern Processor Design
Fundamentals of Super-scalar Processors.

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And we'll be talking about this as or

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we'll be mentioning this and we coined
this Shennon-Leposty

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book because these are the two authors of
this textbook.

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I did want to point out that this version
here

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which has a blue cover and is hardcover
has recently fallen

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out of print as McGraw-Hill, who is the
publisher, but it

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is being reissued by Wyvern Press in a
cheaper, paperback edition.

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the paperback edition is going to have the
white cover and will be released very

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soon and we'll post more details about
that

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on the course website when it becomes
available.

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For those of you who are joining in the
middle of

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this course, we want to encourage you to,
to jump right in.

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the mid term and the final we will have
open for

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long periods to take the exams and also to
grade the exams.

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But if you are just coming in the middle
and

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you're like say joining like a week before
the midterm or

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after the midterm we'll be posting the
answers to those

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but we unfortunately can't have like
infinite numbers of midterms and

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finals with full grading turned on.

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So you're more than welcome to come join
the course.

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Use it as a self study.

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And we'll also be including after the
course

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completes, we'll be leaving it open for
self study.

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And for instance if you missed the midterm
but you make it

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to this course for the final feel free to
take the final.

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so, while this is the encore offering of
the course, I

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wanted to talk a little bit about how
we've improved this course

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since the first offering.

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So, we'll actually we've re-taped several
of the lectures,

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and we've fixed many different errata in
the slides.

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And while I was speaking about errata, I
wanted to encourage you if you find

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an error, somewhere in the course
material,

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please log in and use the course forums.

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Go to the course material errors forum,
and look through and

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see, make sure that the error has not
already been posted.

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But if it hasn't, please let

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us know.

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We really want to try to make this as best
as possible, this course.

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So please go in there and post the
problems, and

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we'll try to get 'em fixed as soon as
possible.

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while I'm on the topic of forums, I also
wanted to

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talk about, language and region specific
meet up groups, or study groups.

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We have a location on our forums where
people can meet up and try

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to post in there if they are from a
specific region or specific language.

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I unfortunately

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only speak English.

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So I'm not going to be able to answer your
questions in another language.

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But, your fellow students might be able to
help.

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And it might actually help if you will,
you know, are able

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to discuss the different problems in the
course, in a different, language.

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So, look onto that website.

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and look under the forum in that specific,
sub portion of

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the forum to post and try to form meet up
groups.

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In our first offering, we actually had.
Several, actually,

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physical meet up groups in different
countries.

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And we had language specific discussions
that were

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quite in depth about problems, of this
course.

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And it, from what we've heard, it

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really help different, students from
around the world.

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Also, one of the things I wanted to talk
about is surveys.

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And this is a difference from our first
time, offering this course.

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This time around, we're actually going to
be sending you surveys.

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and at a regular basis.

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So we want to be in the course we want to
probably work for

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the mid term one right after the mid term
and a couple at the end.

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And these of course are optional you don't
have to go and fill these out.

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But what we're trying to do is we're
trying to understand

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where the students who are taking our
course are coming from.

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Both in location but also background and
preparation.

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And one of the reasons we're doing this is
to better tune the course for the future.

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And make the course much better in the
future.

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But also,

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we're trying to research, and actively
figure out

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how to better teach computer architecture
in the future.

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And also just about how to teach in a

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massively open online course environment
better in the future.

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Finally, I wanted to talk about.

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Princeton Electrical Engineering
Department.

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And all the very strong computer
engineering and

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computer architecture faculty members at
Princeton electrical engineering.

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So if you're going and taking this course,
and you're really enjoying the course.

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And you're learning.

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And you're, you say, I want to continue
doing this in the future.

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And if you're, for instance, a senior in
undergraduate.

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Please apply to Princeton Electrical
Engineering.

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Come and, learn.

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And figure out how to build better and
better microprocessors in the future.

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We currently have, five faculty member.

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Both in the electrical engineering

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department, and the computer science
department.

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Who focus on, computer architecture.

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So we have.
Tens of graduate students and

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also, as I said, five computer
architecture

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faculties and computer engineering is
located in

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the electrical engineering department, so
please come

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and apply to the electrical engineering
department.

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We also have circuits professors and a
bunch of software professors over

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in the computer science department, and we
are a top ranked school.

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Our submission deadline for application
process is December 15th.

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Thank you, and I look forward to having a
very successful course with you.