[CS61C FA20] Weekly Lecture 12.LIVE - SIMD — Transcript

Full transcript

1. 0:00computer all right ladies and gentlemen
2. 0:03welcome to cs61c
3. 0:05once a week lectures live session on
4. 0:07parallelism
5. 0:09great to have you here great to have you
6. 0:11here good stuff
7. 0:13hope you boy we're as rapped as i were
8. 0:16was
9. 0:16uh last week with cnn i don't think i've
10. 0:19watched more hours of cnn
11. 0:21in my life than i did last week was
12. 0:23everybody were you
13. 0:24locked into that i had it on on lockdown
14. 0:26over here i had my
15. 0:28second monitor always we
16. 0:31i mean i don't watch television but yes
17. 0:33i spent too many hours and you know
18. 0:35there was an impact that i posted uh you
19. 0:38know today's videos for the lecture
20. 0:40last night at like 2 a.m because i had
21. 0:42to
22. 0:45you were on last week that's true when
23. 0:47you're on it's hard to have something
24. 0:48taken i was obviously yeah i had a
25. 0:50little chance that's right
26. 0:51wonderful all right so let's let's go
27. 0:53for what we're talking about today
28. 0:54today's agenda
29. 0:55again welcome to week 12 everybody we
30. 0:56have some wonderful guests from apple
31. 0:58jared dave and anand and we'll introduce
32. 1:01them then we're going to talk about
33. 1:02computing in the news i've got a
34. 1:03delightfully humorous competing the news
35. 1:05to share with you
36. 1:06uh a schedule there's no new policy
37. 1:08updates just just fyi
38. 1:09you missed that bullet is usually there
39. 1:11we're missing that no policy updates and
40. 1:12then we'll have an ask me anything to
41. 1:14talk about
42. 1:14you know anything else you have folks i
43. 1:16think things are on students minds
44. 1:18so most of the time most of the time is
45. 1:22going to go
46. 1:22to um to our chat with applefox
47. 1:26right we have um uh dave conroy jared
48. 1:29zerby
49. 1:30and anand uh with us we would like to
50. 1:33ask them
51. 1:33you know how they ended up
52. 1:37over um uh in in
53. 1:40in in this part of their careers but
54. 1:43then uh us
55. 1:44after that we're gonna ask them for
56. 1:46advice um on
57. 1:48internships because we have heard
58. 1:50earlier in the semester that apple
59. 1:52is interested in interns and full-time
60. 1:54employees
61. 1:55um so we're going to try to spend
62. 1:58uh most of the time um on that
63. 2:02but let's start with the introductions
64. 2:04um and um
65. 2:05so maybe we can start with the dave
66. 2:08because
67. 2:08uh i think people know jared already
68. 2:13dave how did you end up were you did you
69. 2:16decide you know when you when you
70. 2:18started kindergarten you know
71. 2:19one day i'm gonna work for apple
72. 2:23and tell us also what your role for
73. 2:24apple is now people may have not heard
74. 2:26that
75. 2:26sure i'm dave conroy um i'm a i'm a
76. 2:29fellow
77. 2:29at at apple uh a fellow is a great goal
78. 2:33you uh you get to have all the uh the uh
79. 2:36benefits of being a vice president
80. 2:38without having to do all the management
81. 2:39stuff of being a vice president
82. 2:41so it's great for a technical person
83. 2:42like me um i've been at apple for 17
84. 2:45years
85. 2:46um and uh before that i did a short
86. 2:49stint at
87. 2:50a consumer electronics startup that got
88. 2:51acquired by microsoft and before that i
89. 2:53did 20 years of digital equipment
90. 2:56who many of you don't know who they are
91. 2:59but they were the people who invented
92. 3:00mini computers on the east coast that
93. 3:02they were like a force
94. 3:03of their era were you our east coast
95. 3:05person at the time
96. 3:06dave yeah i was in maynard i was in
97. 3:08canada i was in maynard and hudson
98. 3:10and then i moved out to palo alto and
99. 3:12worked in bob taylor's lab
100. 3:14at the end right so i know all those
101. 3:16xerox park guys pretty well sure sure
102. 3:19my path to apple is when i was at
103. 3:22digital
104. 3:22apple was building this thing called
105. 3:24newton that some of you will remember
106. 3:27and i was building a microprocessor
107. 3:29called strongarm which most people
108. 3:30didn't know
109. 3:32um went into a second generation
110. 3:35newton that never shipped and uh
111. 3:40and so it all you know we we were
112. 3:42building this thing and then that newton
113. 3:43got cancelled
114. 3:44and uh and it all kind of disappeared
115. 3:48and then years later i got this call
116. 3:49from this guy named mike colbert out of
117. 3:51the blue
118. 3:52uh who was at apple who knew me from
119. 3:54like back when we worked together like a
120. 3:56decade before
121. 3:57on this newton and said you should come
122. 3:59to apple it'll be fun
123. 4:01and uh and of course this is 17 years
124. 4:03ago which means if you're going to come
125. 4:05to apple
126. 4:06you have to decide how comfortable you
127. 4:08are going to a place that's going to go
128. 4:10bankrupt in the next six months and
129. 4:12you're going to have to find another job
130. 4:14but i liked the people and so i said
131. 4:16what the hell i could find a job in six
132. 4:18months if y'all goes
133. 4:19the ball goes to crap and uh it turned
134. 4:21out it worked out kind of okay
135. 4:23um i've worked on a whole bunch of
136. 4:25things that at
137. 4:27apple i started off working on the intel
138. 4:29transition which turned out was the
139. 4:31reason
140. 4:32um that mike wanted me to come
141. 4:35but i've worked on silicon for the
142. 4:37phones i've worked with i work
143. 4:39collaborated with intel on the chips
144. 4:40that went into the portables i've worked
145. 4:42on i o standards i've worked on all
146. 4:44sorts of things
147. 4:46so that's me oh one one thing
148. 4:49clarification here how many apple
149. 4:51fellows are
150. 4:51there i mean there is like 5 000 or like
151. 4:55less two or three if you count phil
152. 4:58schiller three three i think
153. 4:59yeah phil showed him three if you count
154. 5:01our marketing fellow
155. 5:04all right we call that not that many we
156. 5:07call that rare air
157. 5:08well done dave all right nice
158. 5:14um jared uh how did you end up in that
159. 5:17lab behind you know that's behind you
160. 5:19all right it's it's really great because
161. 5:21i got i got a two vice presidents behind
162. 5:24me
163. 5:24just in case i need you know backup so i
164. 5:26can i can i can you know yell back to
165. 5:28them at any time
166. 5:29um no i i mean uh so my path to apple
167. 5:32was
168. 5:33i when i started uh college i thought i
169. 5:35was gonna be an aeronautical engineer
170. 5:38and then i took my first aeronautical
171. 5:39engineering class and i said this is
172. 5:41ridiculous
173. 5:42these people have no idea what's going
174. 5:43on i mean there's
175. 5:45you know it's just fudge factor after
176. 5:47fudge factor there's no science here at
177. 5:48all it's just a you know a complete
178. 5:50slapdash thing um and then
179. 5:53uh you know i started i had always loved
180. 5:56tinkering around with computers so
181. 5:57um so i started looking at double e and
182. 6:00this was uh back in the
183. 6:02uh early to mid 80s uh so
184. 6:06um i took a class uh
185. 6:09across the bay from where you guys are
186. 6:12and
187. 6:13got to design and build my own chip
188. 6:17and i just thought that was the best
189. 6:19thing i had ever
190. 6:20uh i had ever seen you know the fact
191. 6:23that i wasn't going to be doing some
192. 6:25problem set that some professor had
193. 6:26dreamed up at
194. 6:27two or three in the morning and you know
195. 6:30and i
196. 6:30i could actually build something of my
197. 6:32own and have it
198. 6:34you know be something different um and i
199. 6:37just found the
200. 6:38ability to express uh uh
201. 6:41you know ideas in silicon to be just
202. 6:44fascinating
203. 6:44and so that was 33 years ago
204. 6:48uh after that i uh
205. 6:51i when i graduated and i would like to
206. 6:54impress on people the
207. 6:55impact of when you are interviewing
208. 6:59uh and you bring to the interview a die
209. 7:02photo a plot and a schematic of the chip
210. 7:06that you made
211. 7:07it has a different kind of impression on
212. 7:09on people then rather than like you know
213. 7:11digging around in your
214. 7:12transcript for a grade you know or
215. 7:14showing someone a problem set
216. 7:16because for somebody in industry to see
217. 7:18a student that's actually built
218. 7:20something and understands how to bring
219. 7:21it up and
220. 7:22what the well you know where the the
221. 7:24bugs are and stuff like that it's it's
222. 7:25different
223. 7:26it's a different kind of interview let
224. 7:27me just say that um so
225. 7:29so uh it usually goes well for the
226. 7:32student it's what we're trying to say
227. 7:33here
228. 7:34it goes regularly very well for this it
229. 7:36goes very well
230. 7:37uh it opens a lot of doors so there's a
231. 7:39glass
232. 7:40there's a class uh 194 that we're
233. 7:43helping uh
234. 7:44you know sponsor at berkeley for people
235. 7:46who want to tape out their own chips
236. 7:49uh it's a lot of work but it's a lot of
237. 7:51fun a lot of these classes do logistim
238. 7:53diagrams
239. 7:54count
240. 7:54[Laughter]
241. 7:58that's good it helps but it's but it's
242. 8:00not the same as actually building
243. 8:02something
244. 8:03um so uh
245. 8:07don't tell them
246. 8:10i went to a company called uh vlsi
247. 8:12technology then i went to mips computer
248. 8:14systems i was designing floating point
249. 8:15units
250. 8:16and i went to rambus for 21 years so
251. 8:18when i look at dave i like dave's a deck
252. 8:20guy
253. 8:20you know so i think people still look at
254. 8:22me and thinking that i'm a rambus guy
255. 8:24um because that's where you know you you
256. 8:26put in a lot of time there i've been in
257. 8:28apple for seven years
258. 8:30um i'm fortunate enough to work for the
259. 8:32other apple fellow
260. 8:33that's that's that's technical um not
261. 8:36phil schiller
262. 8:37and um and uh i work in a team called
263. 8:41exploratory design
264. 8:42which is uh really a lot of fun because
265. 8:44uh we get to do a lot of
266. 8:46uh crazy things across lots of lots of
267. 8:48different
268. 8:50spans and uh before we get into the q a
269. 8:53i just want to make
270. 8:54two points uh number one no we can't
271. 8:56talk about anything
272. 8:58about uh what's gonna be announced
273. 8:59tomorrow so if you can just take that
274. 9:01off of your
275. 9:02questions list um because uh you know
276. 9:04we're not gonna get an on
277. 9:06fire uh in the process of of this
278. 9:08meeting
279. 9:09uh uh and then uh you know number two
280. 9:13uh yes apple has internships yes apple
281. 9:15has internships for undergrads and
282. 9:17hardware
283. 9:17um in fact the largest organization in
284. 9:20hardware technology which has the most
285. 9:22internships in the in the hundreds
286. 9:24uh uh for for this coming summer
287. 9:27has a charter too and they are
288. 9:29successful at
289. 9:30hiring 50 undergrads for internships
290. 9:34so um so just recalibrate yourself on
291. 9:38that
292. 9:40all right and and maybe you can
293. 9:43introduce yourselves
294. 9:44you know did was your path to apple the
295. 9:47most
296. 9:48straightforward these guys took a little
297. 9:49bit of a windy path
298. 9:52yeah and what's your what's your role in
299. 9:53apple as well yeah share that
300. 9:55uh sure so um i work in uh
301. 9:58a group at apple called platform
302. 9:59architecture uh i manage a few teams
303. 10:01that are focused on at a high level you
304. 10:03can think about it as power performance
305. 10:05and prototyping um so we study how fast
306. 10:08things are how much power they draw
307. 10:10and try and kind of create new things
308. 10:12that that we might turn into
309. 10:13products or technologies in the future
310. 10:16um my path sample was a little
311. 10:18unusual um so i've only had two jobs my
312. 10:20whole life my first job uh was company i
313. 10:22started when i was 14.
314. 10:24um it was a deep technology publication
315. 10:26called a non-tech so my first name plus
316. 10:29tech at the end you can kind of guess
317. 10:30what that was that was about
318. 10:32um so i started that back in april of 97
319. 10:35um
320. 10:36kind of showed up at the just before the
321. 10:38dot-com boom or as the dot-com boom was
322. 10:40happening
323. 10:41um and so i i rode that wave up i never
324. 10:44took any vc or anything like that this
325. 10:46is entirely uh uh homegrown
326. 10:48um so i i rode that wave up i lived
327. 10:51through the dot com bust i
328. 10:52lived through the kind of uh rebuilding
329. 10:55web 2.0
330. 10:57um and then lived through the great
331. 10:58recession managing the company as well
332. 11:00and then again we rebuilt and continued
333. 11:02to grow um
334. 11:04and as i was kind of you know entering
335. 11:06into my 30s i've been kind of doing the
336. 11:08same thing for a very long time my goal
337. 11:09always was to like you know
338. 11:11at some point uh kind of take a step
339. 11:13back
340. 11:14i always said that you know every big
341. 11:16transition my company had
342. 11:18uh we always grew a lot i ended up on a
343. 11:20plane a lot more and i ended up with
344. 11:21less hair
345. 11:22uh and so you know we were in like kind
346. 11:24of pivot number four
347. 11:25over this kind of 18 year time span and
348. 11:27i said look it's time for me to slow
349. 11:29down a little bit
350. 11:30and the plan was to always you know kind
351. 11:31of exit and and go stay with the parent
352. 11:34company for a while and help them build
353. 11:35other verticals similar to
354. 11:37what i had built um i always believed
355. 11:39that kind of my core innovation there
356. 11:40wasn't necessarily
357. 11:42how we approached analyzing computer and
358. 11:44mobile hardware but our approach to
359. 11:46journalism
360. 11:47and so i wanted to go and kind of uh
361. 11:49duplicate that across a bunch of
362. 11:51different verticals
363. 11:52around the time i was having these kind
364. 11:54of thoughts and and getting the company
365. 11:56ready to came and take that next step
366. 11:57uh apple approached uh with an interest
367. 12:00in hiring uh someone who worked for me
368. 12:02um which was not unusual we you know
369. 12:04were a good pipeline for
370. 12:05uh people who were students they would
371. 12:07get a lot of industry experience working
372. 12:09for us
373. 12:10and then oftentimes they they you know
374. 12:11either stuck with us for a long time or
375. 12:13they would go work in industry
376. 12:14and kind of give you a leg up over the
377. 12:16competition um so they approached me
378. 12:18trying to hire one of my folks again not
379. 12:20unusual
380. 12:21it was a connection that we enabled and
381. 12:22helped make and in the conversation they
382. 12:24said hey you know be
383. 12:25kind of interesting if you join um and i
384. 12:28had never thought about working for any
385. 12:30of the companies that we covered
386. 12:32um i think most of them by the time
387. 12:36product got to us you know we started as
388. 12:38a pc hardware and technology review site
389. 12:40eventually expanded into consumer
390. 12:42electronics servers
391. 12:43chips all of that stuff uh i always felt
392. 12:46that like you know
393. 12:47i could see the politics just from the
394. 12:50outside
395. 12:51uh that meant that i didn't want to work
396. 12:52at most of these companies the only one
397. 12:54that you know kind of
398. 12:55seemed okay to me was apple um and so i
399. 12:58entertained the thought you know i had a
400. 13:00conversation with uh the person who
401. 13:03became my boss
402. 13:04and after that initial conversation i
403. 13:05was like yeah this makes no sense but
404. 13:07after a bunch of these conversations uh
405. 13:09it kind of opened me up to the
406. 13:11ability to influence uh and and make an
407. 13:14impact on
408. 13:15uh just honestly one of the greatest
409. 13:17companies in the world uh and then i
410. 13:19always figured hey the bar was low
411. 13:20enough in journalism that a 14 year old
412. 13:22kid that knew nothing could
413. 13:23kind of do well in it so if i ever
414. 13:24wanted to go back i could i could always
415. 13:26do that
416. 13:27um and so i've been at apple for a bit
417. 13:29over six years now
418. 13:30uh and yeah that's my story
419. 13:33know th this is really thank you this is
420. 13:35really funny um
421. 13:36do you know how many times dan and i
422. 13:38when we go for this computing in the
423. 13:40news uh
424. 13:41you know grab stuff from alan we pull it
425. 13:44every week it's great
426. 13:46you know
427. 13:54but this is funny i mean most students
428. 13:56do not know that there was a 14 year old
429. 13:58kid behind that website
430. 14:02[Music]
431. 14:03uh when i first started i remember the
432. 14:06day someone posted a comment that like
433. 14:08hey this kid goes to high school
434. 14:10and i thought i was like you're outed
435. 14:13you're outed look at that for three
436. 14:16months and then everyone thought my dad
437. 14:17wrote everything and i was like that's
438. 14:19hilarious but uh yeah that's
439. 14:20another really good that's brilliant
440. 14:23yeah that's great
441. 14:24all right um and there are a couple of
442. 14:27questions that came in guys feel free
443. 14:28asking questions says
444. 14:30did any of you get to meet steve wozniak
445. 14:33or steve jobs
446. 14:36well by the time i showed up
447. 14:40you know steve wozniak was long gone um
448. 14:43i i would see him occasionally at
449. 14:45at launches because he always got to sit
450. 14:47in the front row because he always got
451. 14:49an invitation
452. 14:51i met steve a couple of times
453. 14:56most of the stories about steve is true
454. 14:58and that means that
455. 15:00lots of people spend a lot of time
456. 15:02trying to arrange that they perhaps
457. 15:03didn't have to be in a meeting with
458. 15:05steve
459. 15:06um and uh this mike culbert guy that i
460. 15:09talked about before
461. 15:10uh he and steve were uh were were
462. 15:14very very trusteds and so most of the
463. 15:17time i could get anything i wanted to
464. 15:19see
465. 15:19simply by telling it to mike and then
466. 15:21mike would tell it to steve and if steve
467. 15:23went ra
468. 15:24he put bra
469. 15:27which was a win
470. 15:32all right um
471. 15:35there is another question over here
472. 15:37should we tell them or should we keep
473. 15:38the secret for another day we are not
474. 15:40done
475. 15:40grading and checking everything um i
476. 15:43feel like keeping a surprise
477. 15:44i feel like we keep it a secret i don't
478. 15:46know you know what's the price
479. 15:48for project three and i will find out in
480. 15:51a few days
481. 15:52you'll find out
482. 15:55[Laughter]
483. 16:03they said it was shipped to it's
484. 16:06incorrect hole somewhere in shipping and
485. 16:07receiving
486. 16:08we're gonna have a ton of fun getting to
487. 16:10that
488. 16:13just keep the make sure you you keep
489. 16:15feeding it and cleaning it because if
490. 16:16otherwise you know
491. 16:17[Laughter]
492. 16:20you dribble something
493. 16:23yes don't shake the box um
494. 16:27people ask you is it their own cpu is it
495. 16:29is it a custom apple cpu
496. 16:31yeah they're they're going they're going
497. 16:33it's the a15
498. 16:34it's the a15
499. 16:38that's funny yeah all right so
500. 16:41i mean one of the key things that we
501. 16:43wanted to talk about here are uh
502. 16:45to elaborate a bit on what jared said um
503. 16:48about these internships uh right i mean
504. 16:51lots of our students
505. 16:52uh find a place in in internships in um
506. 16:56in software as undergrads and they they
507. 16:59enjoy them
508. 17:00um and you know a good number goes to
509. 17:03apple and does uh
510. 17:04a software internship um but often there
511. 17:07is this um
512. 17:09idea that you can't get the you know the
513. 17:11the you can get an internship in
514. 17:13hardware
515. 17:14uh now you're telling us that is uh um
516. 17:17you know everybody's wrong about that
517. 17:20and
518. 17:20uh um can you tell us a little bit more
519. 17:23what's the secret there what what do you
520. 17:25need to
521. 17:25to to know you know can you do it with
522. 17:28uh
523. 17:2861c type of knowledge um
524. 17:32i mean do you need to pass by like dave
525. 17:34interview
526. 17:35you know the the other fellow uh
527. 17:37activist belatas
528. 17:38you know do they need to grill you for a
529. 17:40little bit uh and see how you do
530. 17:42i i sure hope not no i mean i you know
531. 17:47no uh most most people are coming for
532. 17:49internships will not uh
533. 17:51would not pass the uh the deal the the
534. 17:54bill and bill and dave uh you know
535. 17:56uh phalanx i think i don't think i would
536. 17:59pass a bill
537. 18:02that's true yeah you know these are the
538. 18:03kinds of things that we don't want to
539. 18:04ask too of any questions about but
540. 18:06um the i mean 61c is absolutely
541. 18:10you know getting into into understanding
542. 18:12the way that machines work at the very
543. 18:14you know deep level on a register level
544. 18:16um is is absolutely very important
545. 18:18there's a there are a lot of openings
546. 18:20in uh in verification
547. 18:24uh is really applicable because you
548. 18:26really didn't deeply understand
549. 18:28where the machine's going um there are a
550. 18:31fair amount of
551. 18:32uh openings in embedded software that's
552. 18:34that that is
553. 18:35that are that are immediately applicable
554. 18:37with a 61c background
555. 18:39um but the more that you can branch out
556. 18:42and the more that you can do and show in
557. 18:43terms of your projects and and project
558. 18:45background
559. 18:45interests in my view those are the
560. 18:47things that stand out
561. 18:48and on a resume or are projects uh
562. 18:52you know how you do in labs how you
563. 18:53doing projects talking
564. 18:55more about what it is that you've that
565. 18:57you've made that makes a big difference
566. 18:58i don't know um you know david and on
567. 19:00what you guys think about um
568. 19:02students and software and hardware and
569. 19:04how how
570. 19:05you see them coming in and what you see
571. 19:07is being successful
572. 19:10i mean i'm a super bowl i'm as you know
573. 19:12i'm a super believer in internships
574. 19:14um i you know it's
575. 19:19when you're sort of learning this this
576. 19:22trade for lack of a better word
577. 19:24you know a really really important part
578. 19:27of it
579. 19:27is to have a really really solid
580. 19:30foundation
581. 19:31on on the theory and the next click
582. 19:33above that and academia does a
583. 19:35spectacular job of doing that
584. 19:37but you know a part of learning a trade
585. 19:40is just learning how to get your hands
586. 19:41dirty and the millions of little jobs
587. 19:43that have to be done
588. 19:45and you know as someone who spent their
589. 19:47whole life sort of building computers
590. 19:48and shipping them to people
591. 19:50it's amazing how much of the work is
592. 19:52just work
593. 19:54as opposed to um
594. 19:57as opposed to like you know unbelievably
595. 20:00fancy remarkable earth-shattering work
596. 20:02there's just a lot of stuff that has to
597. 20:04be done
598. 20:05um and and it's important stuff it's not
599. 20:08you got to do it you know you have to
600. 20:11kind of slog your way through it
601. 20:12and the good news for that is it means
602. 20:15that
603. 20:16you know for someone who's sort of at
604. 20:18the beginning of
605. 20:19their career like an undergraduate um in
606. 20:22in ecs right that you can come to a
607. 20:26place like apple
608. 20:27and do some stuff that you're that
609. 20:31you're perfectly capable of doing with a
610. 20:33little bit of the help
611. 20:34from the people who are already there
612. 20:37and it's important
613. 20:38right that that you know that this this
614. 20:41this
615. 20:42stuff that you're doing and you're kind
616. 20:44of you know learning
617. 20:45you know you're learning how to set up
618. 20:48the thing for this cad tool and learning
619. 20:50how awful this cad tool is so that you
620. 20:52can
621. 20:53be part of the people who know how awful
622. 20:54this cad tool is right that if this
623. 20:56doesn't happen
624. 20:57there is no phone next year right it's
625. 21:01right
626. 21:01it's it's really good and you come out
627. 21:03of it you get to make a contribution to
628. 21:05stuff that that you get to see in the
629. 21:06world and you get to learn just
630. 21:08you know a little bit of the hands dirty
631. 21:10part of the trade
632. 21:12right i've i'm a i'm from my background
633. 21:15i'm a waterloo guy and waterloo is a
634. 21:17place that believes in cooperative
635. 21:18education you can't get an engineering
636. 21:20degree without
637. 21:21doing it um and i had the good fortune
638. 21:25to
639. 21:26you know at the beginning to get tied in
640. 21:27with a bunch of guys in this little
641. 21:29engineering
642. 21:30company who you know remembered building
643. 21:32computers out of vacuum tubes and i
644. 21:33learned a
645. 21:34billion things from them right it was
646. 21:36just really really great
647. 21:40that's awesome i can tell you yeah go
648. 21:42ahead
649. 21:43um for me and i think this is true
650. 21:46whether it's an internship or you know
651. 21:49someone that we're just trying to hire
652. 21:50who's out of college
653. 21:52um i think technical depth is really
654. 21:54important you know be a master of some
655. 21:56domain have
656. 21:57a lot of skill that you can demonstrate
657. 21:58in some area but the thing that i often
658. 22:00find is missing
659. 22:01is passion right like you know we will
660. 22:03interview for a position for a year
661. 22:06and find one person out of all the
662. 22:09interviews that year that
663. 22:10really cares about the stuff they really
664. 22:12they have passion for it they're really
665. 22:14enthusiastic about it
666. 22:15um i think that's a you know if if you
667. 22:18have the right intersection of
668. 22:19technical depth uh in something whatever
669. 22:22your specialty is some technical depth
670. 22:24and passion you immediately stand out to
671. 22:27me
672. 22:27um and it's such a hard thing to find um
673. 22:30both amongst
674. 22:31uh i think new college grads people who
675. 22:34are in industry or even interns but if
676. 22:36we find someone like that we
677. 22:37i mean those people are the people that
678. 22:39get routed to me and they're like you
679. 22:40need to go talk to this person
680. 22:41um and so i think that i i can't uh uh
681. 22:45overstate enough the the value that i
682. 22:47think that brings
683. 22:49so what do these guys need to put in the
684. 22:51resumes for to to
685. 22:53make that bar i mean there is a lot of
686. 22:55them that we
687. 22:58i mean we have i mean what's yeah to
688. 23:00that point i mean to add on to
689. 23:02what uh anand and dave said i mean i
690. 23:04think a lot of it comes down to the
691. 23:06person
692. 23:06right it really comes down to the
693. 23:08individual having the the tenacity and
694. 23:10the follow through you know and dave
695. 23:11said a lot of is just work that means
696. 23:13that what you do
697. 23:16uh to bring to you know what you do to
698. 23:19differentiate the work that you do
699. 23:22you know yeah are you doing quality work
700. 23:25are you bringing it you know on time
701. 23:26are you are you are you making it happen
702. 23:28are you supporting the people around you
703. 23:30are you
704. 23:31you know being a good team player are
705. 23:32you thinking not just about your block
706. 23:34what are you thinking about other
707. 23:35people's blocks
708. 23:36are you studying the code around you are
709. 23:39you are you
710. 23:40learning beyond what it is that you just
711. 23:42need to do
712. 23:43there's a great uh book about bell labs
713. 23:45and and i think
714. 23:47one of the leaders of bellaps said you
715. 23:48know what you do um
716. 23:51you know in the in the eight hours per
717. 23:53day um
718. 23:54that pays for your that that justifies
719. 23:56your salary and your you know your your
720. 23:58medical
721. 23:59and uh what you do in the other 16 hours
722. 24:02a day and the weekends
723. 24:04that's your bonus right there right so
724. 24:06you know it's it's thinking about
725. 24:08it's not and it's not just like pouring
726. 24:10the coals on it it's
727. 24:12it's the it's really you know thinking
728. 24:15deeply about these things and spending
729. 24:17some time and getting kind of getting
730. 24:19hooked on
731. 24:19on it what it is the uh you know the the
732. 24:23you know the joy of it right you know
733. 24:25and if you if you're not
734. 24:26if you're not loving it then it's not
735. 24:28going to come out right so i mean do
736. 24:30do the thing that you it's a little bit
737. 24:32of a trope but
738. 24:33i mean do the thing that you love and
739. 24:35and it will show through
740. 24:36and and one of the one of the one of my
741. 24:39my favorite stories about when i first
742. 24:41started at apple was
743. 24:42my wife asked me you know so after her
744. 24:44first week she said well how's it going
745. 24:46and i said
746. 24:47it's good but i'm hungry all the time i
747. 24:50don't know why i'm hungry all the time
748. 24:51and i and it didn't take me long to
749. 24:53figure out it was because i would
750. 24:55look down get down and start looking at
751. 24:58a problem
752. 24:58and then start looking at what different
753. 25:00people had done and then before i looked
754. 25:01up it would be like three or four hours
755. 25:03would have passed you know and
756. 25:04and it'd be like lunch flew by and i was
757. 25:06just like oh yeah this is cool this is
758. 25:09really cool
759. 25:10this is really really cool you know so
760. 25:12it
761. 25:13it there are a lot of people who just
762. 25:15love to nerd out on what it is that they
763. 25:16do at apple and i think that
764. 25:18um that definitely is a key
765. 25:20characteristic
766. 25:21so so i'll ask some questions over here
767. 25:25on behalf of the class and then after
768. 25:26that you know we got a
769. 25:28few q and a uh questions that are coming
770. 25:30in um
771. 25:33one thing that from my interaction with
772. 25:35the students in the class what they've
773. 25:36figured out um so far that they seem to
774. 25:39be every day
775. 25:40more and more comfortable with
776. 25:41performance programming embedded
777. 25:43programming how to fit things into
778. 25:45tight spaces and get maximum performance
779. 25:47out of that
780. 25:49and they got a good feel for hardware
781. 25:51but are
782. 25:52one step away from you know in 61c
783. 25:56one step away from actually building
784. 25:59real hardware
785. 25:59uh past the largest scene what's your
786. 26:02advice for them i mean
787. 26:03first you know do you hire people who
788. 26:04need to pack extremely tight
789. 26:07matrix multiplication loop and you know
790. 26:09run tight neural net
791. 26:10into a little embedded space that is out
792. 26:13there
793. 26:14um and once when they master that you
794. 26:16know how do they go
795. 26:17and build their own neural net hardware
796. 26:20or something else exciting or maybe
797. 26:22verify it or
798. 26:24and so on i think i i can at least speak
799. 26:27from my orgs there
800. 26:28there are people i employ who they
801. 26:32uh even though we exist in a hardware or
802. 26:34their strength is that
803. 26:36being in that intersection between
804. 26:38really understanding how code runs on
805. 26:40on uh on bare metal and understanding
806. 26:43the architecture
807. 26:44and so they never need to ever build a
808. 26:46chip or or verify chip or do anything
809. 26:48like that
810. 26:48but understanding and being able to
811. 26:50exist in that kind of uh
812. 26:52gap between the two is uh it's very rare
813. 26:55and very important
814. 26:56um and so people in that space with a
815. 26:58lot of expertise on how to make code
816. 27:00run very quickly uh on the underlying
817. 27:02architecture
818. 27:03that's that's a very important skill to
819. 27:06have
820. 27:09sounds good and how do you make the next
821. 27:11step
822. 27:14uh what do you mean by the next maybe
823. 27:16others can say yeah how do you actually
824. 27:18go
825. 27:18you know towards building your own um
826. 27:23hardware i mean how do you you know get
827. 27:25comfortable interviewing for a harder
828. 27:27position
829. 27:28for example maybe perhaps a question for
830. 27:31jared
831. 27:32jared would be better equipped for that
832. 27:34um getting comfortable interviewing for
833. 27:36a hardware position i
834. 27:37um i mean i think there are two parts of
835. 27:39it one is that you need to
836. 27:42um you need to
837. 27:46you need to to come into it with some
838. 27:48confidence i mean one of the
839. 27:50and and the confidence comes by uh
840. 27:53you know kind of by doing your homework
841. 27:55right if if you go
842. 27:57in thinking uh if you go into an
843. 27:59interview thinking
844. 28:00you are crazy if you don't hire me
845. 28:04like you know you are insane i am the
846. 28:06perfect person for this job
847. 28:08because i've done this and this and this
848. 28:09and this and i really
849. 28:11think that um you know i can make a big
850. 28:12impact here that is much more powerful
851. 28:15than
852. 28:16well i don't know if i'm gonna fit here
853. 28:18and i'm not sure and you know
854. 28:20so i think you know do the homework that
855. 28:22you feel like
856. 28:23you need to do to be prepared and and be
857. 28:26over prepared when you're over prepared
858. 28:28then
859. 28:29then it shows it shows all the way
860. 28:30through and if there's one thing that
861. 28:32i've noticed about
862. 28:32about people that succeeded apple it's
863. 28:35it's a certain attitude
864. 28:38of um they're there to solve
865. 28:41the problems that mother nature has
866. 28:44given us to solve
867. 28:46right in order to deliver the next the
868. 28:49next
869. 28:49feature the next level of performance um
870. 28:52they're not there for
871. 28:53some to to to have them you know to wait
872. 28:56around for someone to tell them what to
873. 28:57do
874. 28:58so a lot of curiosity i think is really
875. 29:00important too
876. 29:02there's no magic formula i mean i think
877. 29:04there are a lot of venues
878. 29:05for for this you know for this class
879. 29:08there's the
880. 29:09special pipeline there's the flash chat
881. 29:11signups there's the
882. 29:13applying throughout there's lots of this
883. 29:14mechanics don't get too
884. 29:16you know go for all the mechanics you
885. 29:18know double the eyes cross all the t's
886. 29:20but do your homework you know know your
887. 29:23stuff and
888. 29:24and get passionate about the technology
889. 29:26and and the rules will come to you
890. 29:28you know they'll be there when you when
891. 29:30you pursue them
892. 29:32and you know the truth the truth is and
893. 29:34the truth is
894. 29:35that for a lot of complicated hardware
895. 29:40a really really useful thing for a
896. 29:42designer to have is for lack of a better
897. 29:45word a sense of style
898. 29:47right that that you can you can
899. 29:50you look at some pieces of of hardware
900. 29:54and you say programming this is just
901. 29:56ugly
902. 29:57right this is a this and other ones you
903. 29:59look at it and say
904. 30:00the person who who specked this hardware
905. 30:04understood how the software was going to
906. 30:07feed it because it was clear they had
907. 30:08written a lot of software
908. 30:11to drive low-level hardware so don't
909. 30:12underestimate the value of being a
910. 30:14skilled embedded programmer
911. 30:17a really skilled embedded programmer
912. 30:20who's grounded in sort of the
913. 30:21fundamentals
914. 30:22of of the hardware underneath it is
915. 30:24actually a pretty attractive candidate
916. 30:27for some some hardware hardware tasks
917. 30:30because you don't have to teach them
918. 30:31style
919. 30:35that that's a good one um here is a
920. 30:37question um
921. 30:38yeah are you looking for operative ee
922. 30:40courses
923. 30:43i was just typing an answer to them
924. 30:47that's okay we can answer yeah i mean
925. 30:51absolutely you know 140 151 152 those
926. 30:55are great classes but you know
927. 30:57uh but like like i was saying before i
928. 31:00mean it's there's no like uh
929. 31:02formula it's not like you're gonna you
930. 31:03know go tick tick tick tick and
931. 31:05and then you know your transcript has
932. 31:07these things and then all of a sudden
933. 31:08you know the the the you know the ufo
934. 31:11lands in your backyard and the
935. 31:12and the you know it comes down and and
936. 31:15you know shovels your way to apple
937. 31:16it doesn't work like that i mean a big
938. 31:18part of what
939. 31:20happens in those classes is you get to
940. 31:22know people like borah better
941. 31:24you know you get to know people like dan
942. 31:26better or like her stay better or like
943. 31:27ricky
944. 31:28better you know go you know learn the
945. 31:31craft in a deep
946. 31:32way and start working with the people
947. 31:33that are that are at berkeley that are
948. 31:35so
949. 31:36fantastic i mean you got you got you
950. 31:38know ricky miller
951. 31:39uh teaching analog circuits class with
952. 31:4215 people on it that's criminal
953. 31:44i would i would love to take that class
954. 31:46with her with her i mean
955. 31:48if you if i was your age whoever you are
956. 31:51out there in zoom land if i was your age
957. 31:53i would go take that class
958. 31:55right now you know and whatever prereqs
959. 31:57you know
960. 31:58prereqs are guidance i would i would go
961. 32:02to professors and say i what do i need
962. 32:04to
963. 32:06see now borah's never going to invite
964. 32:07you back i you know i would go to
965. 32:09professors and say i am so excited about
966. 32:11this stuff
967. 32:12what do i need to do to get to what i
968. 32:14need to do to talk you into letting me
969. 32:16take your class
970. 32:17because if you're excited about it it
971. 32:19comes through in every single way and it
972. 32:20comes through in your style too just
973. 32:21like dave was saying
974. 32:23it comes through your style i can look
975. 32:24at someone's schematic and tell if they
976. 32:26were
977. 32:26you know bored doing it or whether they
978. 32:28cared about their craft you know
979. 32:30it there's there is there's a key to
980. 32:33this and it
981. 32:34requires some degree of passion and i'm
982. 32:36gonna shut up
983. 32:38all right good thank you um here is
984. 32:42another one
985. 32:43what do you think have been the biggest
986. 32:44successes and failures for apple's
987. 32:47hardware group and what do you see as
988. 32:50the main challenges going forward
989. 32:53and feel free to also share about maybe
990. 32:54the market wasn't ready
991. 32:56like the newton was amazing but we
992. 32:57weren't you know we weren't ready yet
993. 32:59the market wasn't ready for it even
994. 33:00though it was a great product feel free
995. 33:01to share you know either marketing or
996. 33:02engineering-wise in terms of that
997. 33:04successes or values
998. 33:10well i mean it re you know in in in
999. 33:13recent times we've had we've we've had a
1000. 33:15pretty
1001. 33:16pretty good string of successes for sure
1002. 33:20um some of them beyond our wildest
1003. 33:22dreams
1004. 33:25we we've had things that internally have
1005. 33:27not worked out quite as
1006. 33:28quite as we would expect it and we don't
1007. 33:30talk about them very much
1008. 33:33not not because we're ashamed of them
1009. 33:35because sometimes
1010. 33:36they end up turning into something that
1011. 33:38actually works out really really well
1012. 33:41a little bit later um you know
1013. 33:45it's it's uh i i
1014. 33:48i i stopped
1015. 33:52counting the number of times we tried to
1016. 33:53build the ipad
1017. 33:56right the ipad the ipad that you know as
1018. 33:58the ipad
1019. 33:59um is not the first one it's not the
1020. 34:02second one it's not the third one
1021. 34:04um we would we built countless internal
1022. 34:07prototypes and
1023. 34:08and either it was too big or it was too
1024. 34:10heavy or the display didn't work or
1025. 34:13or using a pad with a stylus is a stupid
1026. 34:15idea
1027. 34:16or i mean you know that that and you'd
1028. 34:19build it and you'd say well that's
1029. 34:20interesting we learn some stuff but we
1030. 34:22but we just we don't declare it a
1031. 34:23failure we just put it on the shelf
1032. 34:26um until until something happens and
1033. 34:29then someone says well that's
1034. 34:30interesting
1035. 34:30let's take it off the shelf so and and
1036. 34:33frequently those failure internal
1037. 34:35failures turn into
1038. 34:36turn into successes sometimes you can
1039. 34:38learn as much from failures as you can
1040. 34:39from successes so you're like
1041. 34:41you actually usually learn you actually
1042. 34:44usually learn
1043. 34:45more right right from success
1044. 34:51when i do get to interview somebody i
1045. 34:53always like to talk about stuff that
1046. 34:55didn't work the discussion is usually
1047. 34:57um far more interesting and you learn a
1048. 34:59lot more about the person
1049. 35:01that's great that's right yeah and and
1050. 35:03you know there was a berkeley
1051. 35:05project that went from 1992 to 1995 that
1052. 35:08was called
1053. 35:09info pad
1054. 35:12it was a great success although not the
1055. 35:14commercial uh there was no immediate
1056. 35:16commercial transition i mean there are a
1057. 35:18few people
1058. 35:18you know the the guy that kind of was a
1059. 35:20driving student behind that is not a
1060. 35:22dean of engineering at mit so you can
1061. 35:24call that a success uh ananta
1062. 35:28uh chandragasan
1063. 35:31when i was a digital in the research
1064. 35:32labs uh hp
1065. 35:35announced that tiny little disk drive i
1066. 35:37think it was hiv
1067. 35:38yeah yeah hummingbird right yeah and we
1068. 35:41looked at that and said i know what you
1069. 35:42can do with this
1070. 35:43you can make a music player and we built
1071. 35:46this thing
1072. 35:47that had the disc and a signal processor
1073. 35:50and a bunch of mp3 decoding code that we
1074. 35:52licensed from frauhofer
1075. 35:54and a bunch of software for it and built
1076. 35:56this thing that it was about like eight
1077. 35:58inches by four inches by an inch and a
1078. 36:01half and it could store like 500 songs
1079. 36:03and it had shuffles and equalizers and
1080. 36:05all of those things
1081. 36:06and uh and it went nowhere
1082. 36:12actually actually that's not quite true
1083. 36:15um
1084. 36:15compact didn't know what to make of it
1085. 36:17and this korean company came to them and
1086. 36:19said
1087. 36:20we would like to license that and they
1088. 36:22said sure
1089. 36:23right yeah and compact the korean
1090. 36:26company licensed it
1091. 36:27and built like a hundred of them or
1092. 36:29something like this and tried to sell
1093. 36:30them
1094. 36:31and uh and nobody bought them
1095. 36:34and and it all seemed like like a like a
1096. 36:37total failure
1097. 36:37jared's laughing because he knows where
1098. 36:39this ends right um
1099. 36:41and then we built the ipod and the ipod
1100. 36:44was a great commercial success and when
1101. 36:46the ipod was a great commercial success
1102. 36:47all of these people would come come out
1103. 36:49of the woodwork and try to explain why
1104. 36:51they had this patent that
1105. 36:53that that read on the ipad and the
1106. 36:55lawyers would point to this little
1107. 36:56korean company and say
1108. 36:59that concept was previously available in
1109. 37:01commerce and
1110. 37:02and uh and and another patent would die
1111. 37:09all right it was really funny so i
1112. 37:12contributed to the iphone before i even
1113. 37:14worked for app
1114. 37:16before i worked for apple all right um
1115. 37:19a couple of very quick ones uh um i
1116. 37:22think this is for uh for a dave can you
1117. 37:24describe a little bit better
1118. 37:26what is good style
1119. 37:31um the short answer is no um
1120. 37:34you know you know when you see it right
1121. 37:36you know what you see
1122. 37:38you know it when you see it right you
1123. 37:40sort of look at it
1124. 37:41and you try to write some software to
1125. 37:43drive it and you realize that like
1126. 37:45like you know this device does not have
1127. 37:49some stupid read modify right bit
1128. 37:51right in the middle of a field that you
1129. 37:52have to change every time you start i o
1130. 37:55that require you know
1131. 37:56or something like that it's really hard
1132. 37:58to describe but you can sort of
1133. 37:59you can sort of tell it when you can
1134. 38:01when you see it right you see
1135. 38:03this is really really easy to talk to
1136. 38:05and the other thing is like
1137. 38:07everything is clumsy or the way the
1138. 38:09interrupt works is really crazy and you
1139. 38:11have to read these four registers and
1140. 38:13dismissing it's really hard
1141. 38:14and this as opposed to it just does the
1142. 38:17right thing
1143. 38:18right good style or not good style
1144. 38:21probably rears its head
1145. 38:23way way down the line when you run into
1146. 38:25scalability issues or you run into
1147. 38:27maintenance issues or
1148. 38:29all of a sudden you have to grow the
1149. 38:30team 10x in order to support the thing
1150. 38:32um good style good architecture those
1151. 38:35tend to go hand in hand
1152. 38:36and by the way there's a software
1153. 38:38equivalent which is just a good api i'm
1154. 38:39thinking about you're going to write
1155. 38:40some for some function some method some
1156. 38:42class
1157. 38:43what's the api that you create for it
1158. 38:45and style comes into that as well
1159. 38:47certainly
1160. 38:47oh style's all over the place in
1161. 38:49software i mean you can't you kidding me
1162. 38:51what do you when do you start
1163. 38:52documenting is that is that 20 minutes
1164. 38:54before you turn in the assignment
1165. 38:55you started your documentation or are
1166. 38:57you doing it all along
1167. 38:59you know i think i think the thing about
1168. 39:02style is that it shows
1169. 39:04uh and i saw the question here do you
1170. 39:06may try and make the hardware as neat
1171. 39:07and pretty as possible
1172. 39:09you know i i think the um the funny
1173. 39:11thing about that
1174. 39:12is it's it's symptomatic of the mindset
1175. 39:16of the person that created it
1176. 39:18how important is it to be
1177. 39:21for things to be done in a clean way
1178. 39:25right that means that i used to have a
1179. 39:27an instructor that said
1180. 39:29i am so lazy i will i will try a
1181. 39:32thousand times to make a proof that is
1182. 39:34one line shorter
1183. 39:35you know so so so but that
1184. 39:38is but the the idea there is to make a
1185. 39:40really clean
1186. 39:41implementation and to understand the
1187. 39:43value that there is
1188. 39:45not just in you know superfluous
1189. 39:47elegance but in terms of
1190. 39:48the quality of the work that's done so
1191. 39:50when you look at a
1192. 39:52when you look at a wire wrap board where
1193. 39:54you look on even a proto board
1194. 39:56and the the wires aren't all helter
1195. 39:58skelter and they're not like you know
1196. 40:00hanging on and there's you know you know
1197. 40:02you know by like one thread or something
1198. 40:04like that it means that there's
1199. 40:05attention put to detail
1200. 40:07um now if someone you know had it all
1201. 40:09held their sculpture and then they
1202. 40:11they shoved it all to make it look
1203. 40:12pretty because they knew the professor
1204. 40:14was running over i mean sure you can
1205. 40:15cheat on stuff like that
1206. 40:17that'll give you a little bit of a waste
1207. 40:18but but the but really
1208. 40:20the the more important thing is to get
1209. 40:22into the mindset of spending the amount
1210. 40:24of time
1211. 40:25to be careful and and cognizant and
1212. 40:28mindful of the different
1213. 40:29thing choices that you're making because
1214. 40:31you know especially in in programming
1215. 40:33oh my god the data structure is the most
1216. 40:35important thing you should spend ninety
1217. 40:37percent of your time on the data
1218. 40:38structure
1219. 40:40and then ten percent of your time on
1220. 40:41your code sit on your hands
1221. 40:44either that or you can write it five
1222. 40:46times you can write it the first time
1223. 40:47figure out that's wrong throw it all out
1224. 40:49write it a second time figure out that's
1225. 40:50a little bit better but still wrong
1226. 40:52throw that all out write it a third time
1227. 40:54you know and then
1228. 40:55and then eventually you're getting the
1229. 40:56hang of it right you know you're like
1230. 40:57okay well then
1231. 40:58that's what what you know you don't get
1232. 41:00to become an expert with that ten
1233. 41:01thousand hours right and you don't spend
1234. 41:03all the ten thousand hours
1235. 41:04you know making perfect things you make
1236. 41:06a lot of pretty crappy things along the
1237. 41:08way
1238. 41:12yeah it was a guy at deck i forget who
1239. 41:14it was
1240. 41:15but he used to always say that when he
1241. 41:18worked away on something for what seemed
1242. 41:20like an insufferable long time
1243. 41:22and when it was all done people would
1244. 41:23come in and look at the result and say
1245. 41:26how did that possibly take you that long
1246. 41:28to do this this is really easy
1247. 41:30right he knew that he had actually done
1248. 41:32a good job
1249. 41:36that might have been dave rogers who ran
1250. 41:38pdp 11 engineering for many years
1251. 41:42wow we mentioned some of these machines
1252. 41:44by doing the class
1253. 41:47um well um thank you very much uh thank
1254. 41:50you for coming stopping by
1255. 41:52um and this was very informative thank
1256. 41:54you dave
1257. 41:55guys we we had uh dave conrad we had
1258. 41:58jared zerby and we had
1259. 41:59anand uh of anantek himself in flesh
1260. 42:05so thank you again uh and we'll see more
1261. 42:07of you and we're gonna be distributing
1262. 42:09these prizes
1263. 42:10starting for project three right
1264. 42:13next week and um at least they're going
1265. 42:16to be
1266. 42:16paper certificates and then after we're
1267. 42:19done with project 4
1268. 42:20we're going to distribute those as well
1269. 42:23and
1270. 42:24um internships uh you guys are ready
1271. 42:27um these guys are telling you already
1272. 42:31and they want you so make sure to
1273. 42:32apologize make sure to apply definitely
1274. 42:35and have good things to say all right
1275. 42:37thank you folks that was wonderful nice
1276. 42:39to see you all
1277. 42:39thank you for your time all right
1278. 42:42take care
1279. 42:46all right all right good stuff
1280. 42:50uh we're up to the schedule um i wanted
1281. 42:53to actually
1282. 42:54do uh the schedule i think i moved to
1283. 42:56here here we go boom there i want to do
1284. 42:58computing the news
1285. 42:59so i have this delightful computer news
1286. 43:01which was uh it's just
1287. 43:02you know with all the insanity of the
1288. 43:04election it's nice to have something
1289. 43:05just fun and frivolous for the computing
1290. 43:07the news
1291. 43:08not like oh somebody hacked you know a
1292. 43:10voting system and oh god what does that
1293. 43:11mean for everybody
1294. 43:12thankfully the only news that i can i
1295. 43:14could find was this really delightful
1296. 43:15whimsical story
1297. 43:16which was this so they have now camera
1298. 43:19by the way if you have a if you have
1299. 43:20have a goal to be a career and as a
1300. 43:23camera operator i might
1301. 43:24encourage you to rethink your goals
1302. 43:26because ai is taking that job
1303. 43:28uh ai is also taking the job of
1304. 43:30radiologists radiologists job is to you
1305. 43:32know read a
1306. 43:33black and white picture and find out
1307. 43:35where the fracture is that's something
1308. 43:36that
1309. 43:36can be trained very easily um so watch
1310. 43:39out because he's a radiologist and he
1311. 43:41claims he is
1312. 43:42he is not going away well he is using ai
1313. 43:45he is using ai no no i appreciate i
1314. 43:47appreciate it i appreciate it but but i
1315. 43:49think the first pass maybe but being you
1316. 43:50know being done by
1317. 43:51by uh computers pretty soon so in this
1318. 43:54case in the camera operation job it's
1319. 43:56pretty easy all you do is you know
1320. 43:58you're
1321. 43:58there's a movement up and down do
1322. 43:59something like driving right i'm just
1323. 44:00doing this
1324. 44:01that's certainly something that a
1325. 44:02computer can do so you know it's moving
1326. 44:04left and right it's zooming
1327. 44:05and so they figured out how to write
1328. 44:06some software to control a camera and
1329. 44:08they had this it was doing well for
1330. 44:09for recording um so recording uh soccer
1331. 44:12matches
1332. 44:13and all you're trying to do is put the
1333. 44:14soccer ball in the center of the screen
1334. 44:16well it turns out there
1335. 44:17let me show you the picture this is a
1336. 44:19picture of what happened
1337. 44:21and um you see this is the this is a
1338. 44:23referee
1339. 44:24and the camera kept wanting to put the
1340. 44:26referee's head in the center of the
1341. 44:28screen
1342. 44:29the referee had a bald head and where he
1343. 44:31was standing on the sidelines
1344. 44:33his head is actually in the field like
1345. 44:35you know from the projection from the
1346. 44:36camera to there
1347. 44:37and then so he thinks well the ball is
1348. 44:38there and so they kept the entire match
1349. 44:41kept going back from the game to the
1350. 44:42referee and then like why is the camera
1351. 44:44keep showing the referee what's the deal
1352. 44:46and it turns out that the light is the
1353. 44:49lighting is just that way
1354. 44:50i mean it's exactly reflection exactly
1355. 44:52as you know the sun's in the far side
1356. 44:54anyway i want to share that
1357. 44:55very humorous thing um they confirmed it
1358. 44:58they confirmed it was a trouble
1359. 45:00that the zoom thought that they're gonna
1360. 45:01keep zooming in uh and they think if
1361. 45:03there was fixed shortly after the game
1362. 45:05ended blah blah blah but it was just a
1363. 45:06lightweight funny thing that
1364. 45:07the larger point of this is that machine
1365. 45:10learning systems
1366. 45:11your computer train systems can be very
1367. 45:13brittle uh and this was an
1368. 45:15example of a brittle system we see this
1369. 45:17with you know
1370. 45:18um facial recognition other things like
1371. 45:20this and so this is the case of
1372. 45:21recognition just being a little brittle
1373. 45:23so just having some fun with that
1374. 45:24all right schedule this is what our
1375. 45:27schedule looks like
1376. 45:27if you can see this let me zoom in a
1377. 45:29little bit so you can see here um we're
1378. 45:31at week 12 i've shown you week 11 behind
1379. 45:33us in week 13 ahead of us
1380. 45:34um we've got no lecture on wednesday so
1381. 45:37take a break on wednesday folks for the
1382. 45:38whole campus
1383. 45:39um rest to be charged if you can and i
1384. 45:41think in two weeks after that we're
1385. 45:43going to have
1386. 45:43[Music]
1387. 45:44so so enjoy your veterans day and happy
1388. 45:46veterans day to everybody
1389. 45:48um next week up thank you next week as a
1390. 45:51monday today's lecture is on cindy and
1391. 45:53flynn taxonomy
1392. 45:55on friday we start a whole new module so
1393. 45:57i want to encourage everybody who's
1394. 45:58behind and wants to kind of restart
1395. 46:00to jump in again uh really on you start
1396. 46:02on monday really because monday is
1397. 46:03really the first part of the section
1398. 46:04this whole section on parallelism this
1399. 46:06is the topic you see the bottom part of
1400. 46:07my slide here
1401. 46:08it says parallelism this is the topic of
1402. 46:09parallelism so please do
1403. 46:11jump in if you were behind you can you
1404. 46:12can catch up here with 32 33
1405. 46:1534 35 and then the fun thing is we're
1406. 46:17going to be adding 36 and 37 which is
1407. 46:19mapreduce
1408. 46:20spark and warehouse scale computing so
1409. 46:23how can you
1410. 46:24you know literally with a couple of
1411. 46:26lines of software a couple lines of
1412. 46:27python
1413. 46:28control a million machines really
1414. 46:30amazing stuff that
1415. 46:31these abstractions are just remarkable
1416. 46:33so we'll share that
1417. 46:34uh the important comments about that uh
1418. 46:38project four depends basically you know
1419. 46:40you can start project for
1420. 46:42with your c knowledge you can get a good
1421. 46:44head start with
1422. 46:46a project yeah uh there was a good
1423. 46:49guideline um guidance through the
1424. 46:51navigation through the project four that
1425. 46:53was done by g
1426. 46:54i think it's recorded and please go
1427. 46:56ahead and take a look at that
1428. 46:58um you know in order to excel in it you
1429. 47:00basically need to start with a monday's
1430. 47:02lecture
1431. 47:02and then you know that is a little bit
1432. 47:05longer but i really wanted to squeeze in
1433. 47:07these things that are important for the
1434. 47:08project
1435. 47:10and then you have um i think about two
1436. 47:13lectures from the
1437. 47:14uh dan um uh fridays and mondays we'll
1438. 47:17get you everything you need to do
1439. 47:19uh for the project maybe wednesdays as
1440. 47:22well yeah maybe a little wednesday as
1441. 47:23well good stuff
1442. 47:24good stuff all right great so now let's
1443. 47:26take a look at
1444. 47:27where we are with our schedule again so
1445. 47:29this is another another
1446. 47:30pass on that so we're in um
1447. 47:33parallelism holiday parallelism tlp one
1448. 47:36two and three and then my produce and
1449. 47:37spark
1450. 47:38in lecture in terms of homework no this
1451. 47:39is new information this is all
1452. 47:41just copying and pasting from the
1453. 47:42website into this just so you know but
1454. 47:44seven and eight we moved seven and eight
1455. 47:45we pushed it down and slid it to today
1456. 47:47so they're due today hopefully that
1457. 47:48isn't too
1458. 47:49too too bad to be able to put them
1459. 47:50together i've been told that it doesn't
1460. 47:51take that long to finish with both of
1461. 47:52those
1462. 47:53and hopefully you've been doing that um
1463. 47:55we've removed set 9 and 11 although they
1464. 47:57still show on the website because they
1465. 47:58were going to be for practice only we're
1466. 47:59going to remove the dates
1467. 48:00we're going to make sure it's there but
1468. 48:01this is not new information just make
1469. 48:02sure you know
1470. 48:03that 9 and 11 are just for practice only
1471. 48:05so get some gets
1472. 48:06get some work there play with that you
1473. 48:08won't need them for the exams that was a
1474. 48:10question people were asking
1475. 48:11you will not need for exams all the
1476. 48:12material all the things you learned
1477. 48:14there
1478. 48:14we'll also be teaching you a lecture and
1479. 48:16the exam will be tested on material that
1480. 48:18you could have gotten from lecture so
1481. 48:19you don't need a homework in 911
1482. 48:21for the exam it's not like it's really a
1483. 48:23secret thing that's there
1484. 48:25that's different from labs again this is
1485. 48:26just a clarification of a previous
1486. 48:28policy
1487. 48:28lab the material is on is due on the
1488. 48:32exams
1489. 48:32but we're by not having you have to
1490. 48:34check to do a check-in
1491. 48:36we're basically giving you flexibility
1492. 48:37to be able to do those labs anytime you
1493. 48:38want to
1494. 48:39uh and ask our tas whenever you have any
1495. 48:41questions be able to ask them but it's
1496. 48:42out there it's like
1497. 48:42it's like reading the book so labs
1498. 48:44become reading the book that's the book
1499. 48:45is also on the exam so make sure you do
1500. 48:46that
1501. 48:47we also took a look at the project for
1502. 48:49deadline and we moved that deadline back
1503. 48:52maybe we'll paste this again into piazza
1504. 48:53people don't watch these videos
1505. 48:55but project four we moved them back so
1506. 48:56you can enjoy thanksgiving it was gonna
1507. 48:58be due
1508. 48:58the monday after thanksgiving and no
1509. 49:00one's gonna i mean that that's gonna be
1510. 49:01a painful thing for everybody in terms
1511. 49:03of thanksgiving so we slid it back
1512. 49:05to be due 12-2 and you have a little bit
1513. 49:07of time in the next video it's not i
1514. 49:08think that's due wednesday or thursday i
1515. 49:09think 12 2 is either wednesday or
1516. 49:10thursday
1517. 49:11wednesday it is wednesday we don't have
1518. 49:13a ton of slippage after that
1519. 49:15because you know there are some people
1520. 49:16who have uh extra time and you know
1521. 49:19we have six flip days yeah we couldn't
1522. 49:21we could go into you know
1523. 49:22until 2021 we've all the slip days so we
1524. 49:24did that um
1525. 49:26and this is also an existing information
1526. 49:28just we're just saying it again um the
1527. 49:30midterm retake was pushed to 11
1528. 49:3115 we have 25 11 15 is a sunday you've
1529. 49:34got 24 hours and we're going to be
1530. 49:36letting you know
1531. 49:37very early this week cc's working on the
1532. 49:39on the file we're going to try to make a
1533. 49:41pass on this
1534. 49:42and declare very early this week who
1535. 49:43needs to take it uh and then we'll let
1536. 49:45you have a chance to say
1537. 49:46well i wasn't on the list but i want to
1538. 49:47be on the list or i wasn't i was on the
1539. 49:49list but i don't think i should be on
1540. 49:50the list because you can't find my
1541. 49:51videos so we'll try to
1542. 49:52have another pass where we'll declare a
1543. 49:54list of students we think should take it
1544. 49:56then we'll give you a chance to either
1545. 49:57add you or remove yourself from the list
1546. 49:58we'll make a call on that and then give
1547. 49:59you the final list and that's what we're
1548. 50:00that's
1549. 50:01that's what we'll expect to take the
1550. 50:02exam but that's it and again we only
1551. 50:03have to take the exam for pieces that
1552. 50:04you missed
1553. 50:05uh not for the whole exam unless
1554. 50:07everything's messed up in terms of your
1555. 50:08video in which case you might ask you to
1556. 50:09hold the whole thing done
1557. 50:10but that's it all right that's it
1558. 50:13that's it any questions i'm looking at
1559. 50:15the q a i see nothing
1560. 50:17i'm looking at here yeah i think we're
1561. 50:20pretty clear
1562. 50:21there's no information so it's not like
1563. 50:22well we made some new policy and just
1564. 50:24questions about it so i think we're
1565. 50:25pretty
1566. 50:25pretty clean there but um and i i have a
1567. 50:28collection of some internship postings
1568. 50:29i'm gonna stop
1569. 50:30posting them on piazza and um you guys
1570. 50:33are ready for many of those i mean
1571. 50:34you're in a good shape
1572. 50:37go for it good stuff and thank you by
1573. 50:39the way for attending i see about about
1574. 50:4050
1575. 50:4155 or 56 people were here today so
1576. 50:43thanks folks for coming to this
1577. 50:44um let's see
1578. 50:49we we had a lot of slip days we were not
1579. 50:52done
1580. 50:52grading so no paper certificates today
1581. 50:55yet
1582. 50:55uh we are not done checking everything
1583. 50:58out
1584. 50:59from project 3b yep
1585. 51:02good stuff all right all right folks
1586. 51:06all right pretty well thanks everybody
1587. 51:08good to see you all
1588. 51:10we'll see you next week all right take
1589. 51:11care folks bye-bye thanks
1590. 51:13bye