Dave O’Hallaron Profile
Dave O’Hallaron

@DavidOHallaron

Followers
1,261
Following
214
Media
2
Statuses
476

CMU Professor Emeritus of CS and ECE. Author, with Randy Bryant, of Computer Systems: A Programmer’s Perspective (3rd edition), 2016. .

Pittsburgh
Joined August 2012
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@DavidOHallaron
Dave O’Hallaron
13 days
I’m not sure I belong in that montage of legendary computer scientists, but thank you very much for the kind thought.
@7etsuo
Tetsuo
14 days
"C is quirky, flawed, and an enormous success." - Dennis Ritchie
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@DavidOHallaron
Dave O’Hallaron
2 years
@BeschlossDC Your feed is an interesting reflection of history in its own right. Ten years ago, it was a fun, well-curated stream of interesting historical facts and photos. Now, it’s laser-focused on saving our democracy.
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@DavidOHallaron
Dave O’Hallaron
16 days
Thank you! Much appreciated!
@sijiramakun
siji
16 days
@DavidOHallaron just wanted to say Dave, reading your book and I love it so far.
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@DavidOHallaron
Dave O’Hallaron
20 days
Are
@sonukg4india
SKG
20 days
Brian 🧠 teaser
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@DavidOHallaron
Dave O’Hallaron
3 years
@RexChapman @rexchapman plays such an important role, by always appealing to the best parts of us. A constant reminder that we can all strive to be funny, caring, and good to others. Such a mensch!!!
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@DavidOHallaron
Dave O’Hallaron
2 years
@OddPittsburgh OMG! Most were awful, especially Wean Hall and Cyert Hall at CMU. I spent 20 years in Wean Hall surrounded by cinder block walls. Those years were wonderful because of my amazing colleagues, but the cinder blocks still trigger the occasional PTSD episode.
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@DavidOHallaron
Dave O’Hallaron
29 days
Funny!
@polarsprite
christy morris 🧚‍♂️
1 month
Bwahahaha 🤣🤣🤣🤣
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@DavidOHallaron
Dave O’Hallaron
9 months
@awfulannouncing I’ve already canceled.
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@DavidOHallaron
Dave O’Hallaron
3 years
@Kstupples @JerryFoltzGC Coolest couple in golf!
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@DavidOHallaron
Dave O’Hallaron
1 year
@TheAthletic Not allowing logged-in subscribers from reading these promoted tweets is disrespectful to your subscribers. I’m out.
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@DavidOHallaron
Dave O’Hallaron
3 years
@RexChapman Classical Gas by Mason Williams.
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@DavidOHallaron
Dave O’Hallaron
2 months
@ramirosalas @Rainmaker1973 K&R is the best example of technical writing, and the inspiration for my textbook with Randy Bryant: “Computer Systems: A Programmer’s Perspective (third edition), 2015.
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@DavidOHallaron
Dave O’Hallaron
9 months
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@DavidOHallaron
Dave O’Hallaron
1 month
This is so sweet!
@ella_innoh
Sisi Amàh💫
1 month
They are in totally different and very unrelated fields but you can tell they genuinely learnt about it regardless. This is the style that'll have you bouncing your head every Sunday morning 💕
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@DavidOHallaron
Dave O’Hallaron
1 year
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@DavidOHallaron
Dave O’Hallaron
3 years
@sepinwall Don’t get a big head, but I’ve subscribed to Rolling Stone just to have access to your work.
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@DavidOHallaron
Dave O’Hallaron
2 years
@AlanShipnuck @LaJethroJenkins I know you have to deal with numerous Twitter trolls, but I just wanted to let you know that your typing is really good, as are your pods. Both provide me with much entertainment. Way better than the conventional golf media. I think you’re on to something good.
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@DavidOHallaron
Dave O’Hallaron
2 months
I miss him so much.
@PhamilyDoc
Adam
2 months
I’ll say it again…..the artist we lost to Covid that was most tragic was John Prine.
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@DavidOHallaron
Dave O’Hallaron
30 days
Toupee model?
@EvilJoeyVotto
Votto De La Cruz
1 month
What does it look like this guy does for a living
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@DavidOHallaron
Dave O’Hallaron
1 year
@AlanShipnuck Love your work.
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@DavidOHallaron
Dave O’Hallaron
17 days
@deedydas You’re one of my heros.
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@DavidOHallaron
Dave O’Hallaron
13 days
@JoeStarkey1 Here’s a question for the mailbag: What happened to Zeise? Is he no longer part of the show?
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@DavidOHallaron
Dave O’Hallaron
2 months
Love this Anthony!
@Scaramucci
Anthony Scaramucci
2 months
. @AdamKinzinger will be long remembered as a freedom fighter. Who saw evil at its core and spoke out against. Taking risks to heal the country he has unconditional love for.
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@DavidOHallaron
Dave O’Hallaron
5 years
@Kstupples @JerryFoltzGC Jerry is one of my favorite Twitter feeds. Has he ever told you about the “Rolling Turd” expedition? It’s one of the funniest set of tweets ever. I still smile when I think about it years later.
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@DavidOHallaron
Dave O’Hallaron
5 months
@Daniel_Rapaport Used to love watching pro golfers. Sad.
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@DavidOHallaron
Dave O’Hallaron
10 months
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@DavidOHallaron
Dave O’Hallaron
1 year
@TheAthletic Not allowing logged-in subscribers to read these promoted tweets is disrespectful to your customers. I’m done with the Athletic.
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@DavidOHallaron
Dave O’Hallaron
10 months
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@DavidOHallaron
Dave O’Hallaron
2 years
@firepitstories Thank you @AlanShipnuck ! Great reporting!
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@DavidOHallaron
Dave O’Hallaron
2 months
So true!
@BeschlossDC
Michael Beschloss
2 months
Kamala Harris’s elegant, moving and powerful Presidential acceptance speech accomplished more than any other such address in recent American history.
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@DavidOHallaron
Dave O’Hallaron
3 years
@washingtonpost If we rang that bell once per second for each soul who has died from Covid, it would ring continuously for over eight days.
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@DavidOHallaron
Dave O’Hallaron
11 months
@NFL @Vikings @josh_dobbs1 A rocket scientist, for real!
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@DavidOHallaron
Dave O’Hallaron
1 year
@JMackeyPG Your profile of him was really good. Seems like an amazing young man.
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@DavidOHallaron
Dave O’Hallaron
1 year
@NUCLRGOLF Recovered from what? Think he needs to go.
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@DavidOHallaron
Dave O’Hallaron
2 years
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@DavidOHallaron
Dave O’Hallaron
2 years
@KDPomp @AHAPennsylvania @LisaPompeani What a lovely couple! And a worthy cause.
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@DavidOHallaron
Dave O’Hallaron
5 months
@jhathhorn @937theFan Jeff, on the nightly sports call, what are all the triangular shapes in the background?
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@DavidOHallaron
Dave O’Hallaron
22 days
@7etsuo Totally agree with ghotz here.
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@DavidOHallaron
Dave O’Hallaron
8 months
@ATRightMovies A national treasure. As a teen he always had a paperback book in his back pocket. A great writer because he loves to read.
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@DavidOHallaron
Dave O’Hallaron
2 months
Derek, consider Pittsburgh’s Squirrel Hill neighborhood: Wilkins Ave, 2Br, 1ba, 1500 sqft, dry basement, $1600/mo. Walkable to CMU, UPitt, Oakland, Squirrel Hill, and Shadyside. Plus, you could teach me how to dress! I need it!
@dieworkwear
derek guy
2 months
if i made five figures a month off twitter, do you think i'd be renting a tiny apartment and complaining about how i can't afford to buy a home in a walkable neighborhood??
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@DavidOHallaron
Dave O’Hallaron
1 year
@buitengebieden My favorite Twitter feed.
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@DavidOHallaron
Dave O’Hallaron
2 years
@firepitstories Here’s what I think of your Brady Calkins story: I fuckin’ loved it!
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@DavidOHallaron
Dave O’Hallaron
5 months
I did the same experiment and got the same results. A CMU colleague calls LLMs like ChatGPT “blarney generators”. Expect the blarney to get worse as LLMs train on more and more LLM-generated content (model collapse).
@MikeOkuda
Michael Okuda
5 months
Just tried an AI chatbot. Asked it a scientific question about a field about which I know little. It gave a credible-sounding answer. I then asked something about which I am knowledgable. The answer demonstrated that the AI had absolutely no idea what it was talking about.
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@DavidOHallaron
Dave O’Hallaron
10 months
@PGA 140 yds into a gale force wind. Hit 3wd right on the pin. Stopped 1 inch away. I was praying the whole time it wouldn’t go in. Would never have lived down the announcement in the paper.
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@DavidOHallaron
Dave O’Hallaron
10 months
@KDPomp Sincere congrats!
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@DavidOHallaron
Dave O’Hallaron
5 months
@FoxSportsPGH @HWoodMeadows Are you going to address the discrepancy between your Heyward reporting and his response that it was a “bold face lie”?
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@DavidOHallaron
Dave O’Hallaron
1 year
Man, shoulder pads were huge back in the day. Noticed the same thing with college clips of Deon.
@Super70sSports
Super 70s Sports
1 year
Eric Dickerson really doesn’t get talked about enough these days. Dominant.
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@DavidOHallaron
Dave O’Hallaron
9 months
@richarddeitsch I’m listening to the Chiefs/Dolphins game on Westwood One radio. Kevin Harlan is masterful.
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@DavidOHallaron
Dave O’Hallaron
2 years
@AlanShipnuck @LaJethroJenkins Find a good therapist!
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@DavidOHallaron
Dave O’Hallaron
1 year
@AKinkhabwala You are the best!
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@DavidOHallaron
Dave O’Hallaron
5 years
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@DavidOHallaron
Dave O’Hallaron
5 months
Love this article!
@JMackeyPG
Jason Mackey
5 months
Lot of Paul Skenes content going around today. Here’s a feature I turned from last year’s MLB draft on Skenes’ time at Air Force and LSU, including some crazy stories about his work ethic and habits. Very much atypical for a college kid:
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@DavidOHallaron
Dave O’Hallaron
2 years
@AlanShipnuck @acaseofthegolf1 Ryan French, with his encyclopedic knowledge of unknown qualifiers, is fascinating. Fuckin’ love it!!!
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@DavidOHallaron
Dave O’Hallaron
1 year
@minakimes Congratulations!!!
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@DavidOHallaron
Dave O’Hallaron
5 years
@JerryFoltzGC Your live tweeting of the disastrous family cross-country RV trip is one of the greatest Twitter threads ever. Such grace under pressure. Still makes me laugh.
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@DavidOHallaron
Dave O’Hallaron
5 months
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@DavidOHallaron
Dave O’Hallaron
3 years
@AlanShipnuck The new checkout icon is distracting and annoying. It blocks out some of the text. Any chance this could be moved out of the way? Say on the black bar at the top?
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@DavidOHallaron
Dave O’Hallaron
10 months
@KDPomp Just had my first. So happy for you!
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@DavidOHallaron
Dave O’Hallaron
2 years
@AlanShipnuck #askalan Asking for a friend: is there anything more entertaining than the weekly ego-driven CEO tower interview?
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@DavidOHallaron
Dave O’Hallaron
9 months
@PaulZeise Agreed. I stopped watching basketball years ago because of that.
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@DavidOHallaron
Dave O’Hallaron
1 year
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@awkwardgoogle
Tips & Tricks
1 year
Eye test... What number do you see?
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@DavidOHallaron
Dave O’Hallaron
1 year
@JMackeyPG While I got a kick out of your ad read for SS&F, I was blown away by your truly inspirational and moving story on Paul Skenes. Really good work. Thought it deserved a national audience.
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@DavidOHallaron
Dave O’Hallaron
2 years
@937theFan @AKinkhabwala More Aditi please! Love her smart takes and insights.
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@DavidOHallaron
Dave O’Hallaron
10 months
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@DavidOHallaron
Dave O’Hallaron
3 years
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@DavidOHallaron
Dave O’Hallaron
5 months
Beautiful demonstration of the normal distribution.
@gunsnrosesgirl3
Science girl
5 months
In a Galton board, beads bounce off pegs as they fall with an equal chance of going left or right. Beads accumulate in the middle as there are more paths that lead here, similar to how many random events in nature tend to cluster around an average.
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@DavidOHallaron
Dave O’Hallaron
6 months
@AlanShipnuck I really miss Alan’s excellent reporting and pods with Bamberger on golf tournaments.
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@DavidOHallaron
Dave O’Hallaron
1 year
@TheEconomist “On Writing”, by @StephenKing , is stellar.
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@DavidOHallaron
Dave O’Hallaron
14 days
@JeffDean @jsomers @NewYorker I love this article! My software systems students found it to inspirational.
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@DavidOHallaron
Dave O’Hallaron
1 year
Loved the rope-free golf scene with Shipley on 17. Didn’t love the officious marshal trying to shoo fans away.
@AlanShipnuck
Alan Shipnuck
1 year
One of the best moments of this golf season!
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@DavidOHallaron
Dave O’Hallaron
3 years
@lilyburana @RexChapman But there is a ME!
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@DavidOHallaron
Dave O’Hallaron
5 years
@Chalkdinosaur Heard it’s really good!
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@DavidOHallaron
Dave O’Hallaron
5 months
@acaseofthegolf1 It’s pretty clear after the coverage the past few days that “Golf Channel” is a misnomer. It should be called the “PGA TOUR” channel. What a joke.
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@DavidOHallaron
Dave O’Hallaron
10 months
@MAstronomers Damn, that has to be considered a planet!
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@DavidOHallaron
Dave O’Hallaron
2 years
@BeschlossDC I fear we have a balloon gap with China.
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@DavidOHallaron
Dave O’Hallaron
3 years
@arneduncan @RexChapman I never learned about it in school either.
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@DavidOHallaron
Dave O’Hallaron
3 years
@RexChapman I didn’t learn about the Tulsa race massacre growing up in Missouri. Mitch McConnell want to keep it that way.
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@DavidOHallaron
Dave O’Hallaron
6 months
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@DavidOHallaron
Dave O’Hallaron
3 years
@washingtonpost How is she paying for all of this?
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@DavidOHallaron
Dave O’Hallaron
3 years
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@DavidOHallaron
Dave O’Hallaron
5 months
@937theFan @JMackeyPG Mackey wrote a great article about Skenes after he was drafted. I encourage everyone to read it. He’s an impressive human being
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@DavidOHallaron
Dave O’Hallaron
17 days
@alfcnz @pearson Thanks for the recommendation. Just ordered it.
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@DavidOHallaron
Dave O’Hallaron
2 years
@billbarnwell Serious question: whatever happened to the ritual of bringing out the chains to measure for first down? I don’t think I’ve seen one all weekend, even though there have been lots of close calls.
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@DavidOHallaron
Dave O’Hallaron
8 months
@Notorious_SMB @DonChed54 Agreed. @DonChed54 is excellent. Should have his own show soon.
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@DavidOHallaron
Dave O’Hallaron
2 years
@AlanShipnuck Golf Channel did include the LIV golfers in the graphics for the Thursday groupings. But other than that, they never mentioned the LIV golfers during the “Live From” telecasts, and never interviewed them, as far as I could tell. As though DJ, PR, and Louis weren’t on site.
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@DavidOHallaron
Dave O’Hallaron
1 year
@BeschlossDC Michael, could you ever appear on CNN again? I know I won’t be watching them.
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@DavidOHallaron
Dave O’Hallaron
1 year
@Pitt_FB @NFL @steelers Kenny Picket!! Clap clap, clap clap clap!
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@DavidOHallaron
Dave O’Hallaron
13 days
@sama Grifter, bounder, and cad. Am I forgetting anything?
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@DavidOHallaron
Dave O’Hallaron
1 year
@JMackeyPG Great article. The kid is amazing!
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@DavidOHallaron
Dave O’Hallaron
4 years
@RealTimeWWII Thank you again for your awesome Twitter feed. So great!
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@DavidOHallaron
Dave O’Hallaron
1 year
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@DavidOHallaron
Dave O’Hallaron
3 years
@bryanbehar @RexChapman Rex has astutely tapped into the key idea idea underlying 12-step programs: help others by sharing your worst experiences, so that they realize they are not “terminally unique.”
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@DavidOHallaron
Dave O’Hallaron
1 year
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@DavidOHallaron
Dave O’Hallaron
8 months
@ESPNBooger Yes! So glad to hear you say this! Claims of Mr. Irrelevant and game manager are just lazy takes. Please stop! As you correctly observe, he’s a playmaker.
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@DavidOHallaron
Dave O’Hallaron
2 years
@CNN @Andy @andersoncooper Hey guys, the clock on your new years show is ~half an hour behind. Might be embarrassing when midnight rolls around.
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@DavidOHallaron
Dave O’Hallaron
17 days
@deedydas Still true!
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@DavidOHallaron
Dave O’Hallaron
1 year
@JMackeyPG Loved your inspirational ad read for shenderovich shenderovich and fishman on the PM show!
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