one more reminder to clutter your inboxes: tonight, rock bottom brewery,
6-8ish???, cs161 get-together. come hoist a beer (or a coke, if you aren't of
age) with your fellow students and at least a small portion of the course
staff.
best,
-gwa-
geoffrey werner-allen : 617-694-7261 : www.eecs.harvard.edu/~werner
Remember the assignment 3 performance graphs?
While this year it was just the current students' kernels and the
solution set, we actually have an archive of kernels from past years
that are supposed to serve as extra points of comparison. This year,
because I was called away at exactly the wrong moment, no data from
those kernels was ever collected or posted. (But next year we hope to
do better.)
There's also a similar archive for assignment 4 performance.
We want more kernels for the archive. For this, we want your
permission (just to be on the safe side). We will then import your
kernel into the course staff's CVS repository and take care of keeping
it more or less up to date with respect to future changes in OS/161.
(This lets us generate meaningful performance numbers.)
So, if you're willing to let us do this, with either your assignment 3
and/or your assignment 4 submissions, please mail cs161@fas and tell
us which submissions to save. (If you did copy-on-write VM for
assignment 5, we'll take that too.)
You don't have to do any work for this... although of course I'll take
any fixes you want to provide - or even just bug reports. :-)
It DOES NOT MATTER if your code was fast or slow - in fact, since
future students will be seeing these and maybe implicitly comparing
their code, we'd rather the archive didn't get biased in favor of
faster submissions. (Although we do prefer submissions that actually
run most of the tests.)
And of course neither your group name nor your own names will be
attached to any performance stats we post.
Finally, if you have any comments about how the assignment 3 graph was
handled (this includes stuff like "it intimidated me" or "it induced
me to get started on the assignment earlier"), and whether you think
we should do the same thing for assignment 4, please let me know.
We've submitted grades so nothing you say can be used against you,
even if we were so inclined. :-)
--
- David A. Holland / dholland(a)eecs.harvard.edu
don't forget yet all of the fun your had in CS161 this semester!
tomorrow : 6 PM : rock bottom : be there, or be somewhere else
best,
-gwa-
geoffrey werner-allen : 617-694-7261 : www.eecs.harvard.edu/~werner
hello cs161ers:
based on the number of responses that i received, it seems like a post-161
party/get-together is a popular idea. however, tomorrow seems bad for a
couple of reasons:
1) your valiant teaching staff has to have grading finished by midnight
tomorrow night (and one has an exam monday to boot). now, while i know
that most of you would probably rather have us out rather than poring over
your asst5's, this would probably drive TF attendance down. and we plan
on being the life of the party, oh yeah.
2) a few people can't make it.
3) tomorrow grades won't yet be finished, and we'd rather not give you one
more shot at trying to bore your way into our hard little hearts...
well, i said there were a couple and there they are.
that said, i feel obliged to try and push this back into next week. next
weekend would be ideal i think, but i'm worried that many of you may not be
around then since exams will be over. so how about sometime during next week?
invariably this will conflict with some final or another, but i'm going to
arbitrarily pick wednesday night, 6PM, rock bottom in harvard square. if you
want to come and can't, please complain. if we have enough complaints, we'll
move it again.
i'm hoping that many of you will still be around and be willing to come join
us. also, at that point we will have finished final grades, and would love to
hear any comments/criticism you have of the course that you can offer freely
without fear of retribution.
best wishes for this coming week. again, please email if you aren't going to
be able to make it.
-gwa-
geoffrey werner-allen : 617-694-7261 : www.eecs.harvard.edu/~werner
Despite all your earnest begging and pleading, we only ended up
accepting two reconsiderations:
- Because question 9 says "argv array", it can reasonably be
interpreted to mean only the size of the argv[] itself and not
include the strings the argv entries point to . Thus, we have
decided to accept answer B as well as F.
- It was demonstrated that Professor Seltzer said in lecture that
buddy allocation does not suffer from external fragmentation.
So even though this is *not* true, we're accepting answer B on
question 23. If this helps you out, consider yourself lucky...
Statistical properties:
Average: 199.1
Standard deviation: 23.6
Theoretical maximum: 242
Maximum: 226
Minimum: 133
Theoretical minimum: 0
I'm going to mail out individual grades in a moment.
--
- David A. Holland / dholland(a)eecs.harvard.edu
hello 161ers:
now that you guys are done with problem sets, done with the exam, and (almost)
done complaining about the exam, maybe its time to get together one last time,
outside of the (admittedly familiar) setting of the science center terminal
room.
a bunch of students had asked that we try and organize one last little get
together, something chill and low-key at a local watering hole. we'll try to
get a good portion of the class together, as well as a few TFs for you to
throw darts at, and let you comisserate over age-appropriate beverages.
i'm thinking the perhaps sunday afternoon would be a good time for this. 3 or
4ish? nobody should have exams. anyways, that's my suggestion.
please reply to me and let me know if this is something that interests you and
if this is a good time. if it is, i'll send out additional email sometime
over the next few days. if not, we'll renegotiate.
oh, also, suggestions of places to hold this are appreciated.
best,
-gwa-
geoffrey werner-allen : 617-694-7261 : www.eecs.harvard.edu/~werner
The exam answers are now posted, including (mostly) with rationales.
Let us know (preferably sooner rather than later) if you think we've
got any of the questions wrong or if there are any other problems.
--
- David A. Holland / dholland(a)eecs.harvard.edu
Alexandra,
Did my final exam grade yet?
It seems the hardcopy of someone is already grade.
How about my softcopy that I submit in Saturday?
Thanks,
Chau
As always, your feedback is important. Click on
http://supply.nwest.attws.com/satisfaction_survey.cfm
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Supply Management
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Joshua.chau(a)attws.com
-----Original Message-----
From: David Holland [mailto:dholland@eecs.harvard.edu]
Sent: Tuesday, May 13, 2003 5:38 PM
To: cs161-list(a)fas.harvard.edu
Subject: [cs161-list] anonymous final...?
We received a hardcopy submission of the final with no name on it. If
this is yours (or you think it might be yours), please write to us ASAP
with a general description of what the submission looks like (*) so you
can get credit for it.
The finals have in fact been graded already. We'll send out the grades
probably tomorrow in case any issues arise that require adjustments. The
answers will be posted soon, once we're sure all the extension students
in distant time-zones have finished.
(*) for example, if it's a full printout of the exam or an answer sheet
or both, if it's an answer sheet how many pages the answer sheet printed
on, whether it was stapled or paper-clipped, if it was written in green
ink, etc. Stuff like that.
--
- David A. Holland / dholland(a)eecs.harvard.edu
_______________________________________________
cs161-list mailing list
cs161-list(a)fas.harvard.edu
http://www.fas.harvard.edu/mailman/listinfo/cs161-list
We received a hardcopy submission of the final with no name on it. If
this is yours (or you think it might be yours), please write to us
ASAP with a general description of what the submission looks like (*)
so you can get credit for it.
The finals have in fact been graded already. We'll send out the grades
probably tomorrow in case any issues arise that require adjustments.
The answers will be posted soon, once we're sure all the extension
students in distant time-zones have finished.
(*) for example, if it's a full printout of the exam or an answer
sheet or both, if it's an answer sheet how many pages the answer sheet
printed on, whether it was stapled or paper-clipped, if it was written
in green ink, etc. Stuff like that.
--
- David A. Holland / dholland(a)eecs.harvard.edu
- Question 27 should say "(ignore cleaner overhead)" for LFS, like
question 26 does.
- For questions 31 and 32 assume that the student has gone to the
backups after suffering a disk crash (so the original data is lost)
and found that the tapes have gone bad.
- For question 49: Consider attacks that are meant to take over the
target process, not those that are merely meant to deny service.
--
- David A. Holland / dholland(a)eecs.harvard.edu
