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mackman

917 karma · joined February 10, 2016

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mackman··on Eclipse viewing at 30k feet: Delta to offer path-of-totality flight
Yeah, I did worry. I told the flight crew people were at their own risk. I don't remember where I bought them from. Might have been B&H photo which sells their own branded ones in bags of 100 cheap. Maybe from aas.org. It's been a long time.
mackman··on Eclipse viewing at 30k feet: Delta to offer path-of-totality flight
I explained what they were for :-)
mackman··on Eclipse viewing at 30k feet: Delta to offer path-of-totality flight
Story time. In the last total eclipse, I was commuting from Boston to San Francisco a bunch and planned my flight to coincide with the path of totality. I brought enough eclipse glasses for the entire flight. The flight attendants were kind enough to distribute them and even gave them to the pilot and copilot. The flight crew was excited about it and actually got approval a change to their flight plan so that they could bank the plane so that people on both sides of the plane could actually look out the window to see the eclipse. This is back in the days of Virgin America, and as a thank you they sent me a little desk statue of a Virgin America plane. I keep it on my desk in fond memory of my favorite airline. Also got some cool photos of the flight crew and passengers all wearing eclipse glasses. (https://mackman.net/va.jpg)
mackman··on Show HN: USD 0.99/TB/month cloud storage
I have a fairly optimized backup to glacier strategy involving a couple of days of soak time in S3 before moving to glacier with lifecycle rules to avoid the 180 day min storage for transient files. Net I end up paying about $1.20 to $1.50 per TB per month. Restoration of my data set would cost around $100/TB though. So a straight $1/TB would be a nice savings on a good month, and a great savings if my house ever burns down and I need to restore.
mackman··on Antarctic fungi survive Martian conditions on the International Space Station
Obviously there’s going to have to be some holes so they can smell.
mackman··on Antarctic fungi survive Martian conditions on the International Space Station
While I'm sure space truffles are going to be overpriced I am excited to see those little pigs doing EVAs in their little piggy space helmets.
mackman··on Studying species in the deepest parts of the ocean: A new method of analysis
If anyone finds this an interesting idea, you should try blackwater diving. It’s one of my favorite things to do it’s absolutely like being an outer space finding weird aliens. You don’t have to dive very deep and it’s super easy to pay attention to the light so you don’t get lost.
mackman··on How to mod any lens for anamorphic bokeh
“ Anamorphic lens looks, without using an Anamorphic lens. Also known as Anamorfake or Anamorfaux!”
mackman··on People aren't posting on social media as much
A lot of the enshittification is a result of the drop in organic content from friends and needing to maintain engagement numbers. It’s a vicious cycle, possibly a death spiral.
mackman··on Why Unix kernels have grown caches for directory entries ('name caches')
I read through lsof source. It doesn’t provide paths for regular files. Even emailed the author to confirm.
mackman··on Tesla Recalls 2M Cars to Fix Autopilot Safety Flaws
If the FCC mandated Apple deploy an update to reduce phones catching fire then yes, I would use the term recall. For bugs that don’t fall into the safety or regulatory compliance category I would not.
mackman··on A lost X-Files song
Whoa, I had no idea. This is one of my favorite albums. I have the FLAC rip of the CD on my phone. Does anybody know how I could actually rip that zero track? iTunes didn’t do it.
mackman··on New theory claims to unite Einstein's gravity with quantum mechanics
Wouldn't that prevent time from going in reverse?
mackman··on Why Unix kernels have grown caches for directory entries ('name caches')
I’ve been doing development on AIX recently and the lack of such a cache has proven a real pain necessitating implementing our own disk scan and cache. Not knowing the path to an open file or process in constant time is terrible. If anyone here happens to be an expert on AIX and has suggestions please speak up!
mackman··on Stuxnet Source Code
The book about it is a great read although I think it could have used a lot more editing. Chapters approach the timeline from different angles and as a result it does feel like later chapters are going over the same material too many times. Anyhow, you can read part of it here: https://www.wired.com/2014/11/countdown-to-zero-day-stuxnet/
mackman··on Signal reflections in electronic circuits
I usually refer to these as Heisenbugs.
mackman··on Passive Salt Water Cooling Boosts CPU Performance by Almost 33%
When cool it absorbs water. When hot it desorbs water. So you would need to idle or throttle. So some sort of “turbo boost duty cycle” sort of thing.
mackman··on Passive SSH Key Compromise via Lattices [pdf]
Does each bit flip reveal a bit or less or does somehow a single flip compromise the entire key?
mackman··on Currying in Kotlin
C++14 standard:

  auto add = [](auto x) { return [x](auto y) { return x + y; }; };
  auto addFive = add(5);
  auto result = addFive(3);
mackman··on Meta AI announces Massive Multilingual Speech code, models for 1000+ languages
If you shut down an ec2 instance you only pay for the volume not the compute. Just shut it down and start it up the next day.
mackman··on Meta fined $1.3B over data transfers to U.S.
The cost of setting up additional data centers in Europe and re-architecting your application with a different replication strategy is probably 10x-50x the fine. It would also take years and a sizable fraction of the engineering team to make it happen and there will be significant performance and reliability issues throughout the process. Easier to pay the fine and lobby for rules changes for a decade.
mackman··on Sony PlayStation 2 Development Kit (2020)
Pretty useless video. The dev kits had both a Linux PC and a PS2 target board in the same chassis. These guys never got past the Linux login prompt. Now the PS3 dev kits were more interesting. I used a second gen one, a stainless steel box about the size of 4-6 large pizza boxes stacked up. The first gen was twice that height.
mackman··on Vaonis Hyperia: $45k digital telescope
OK maybe this is a dumb question but if I have a camera with a 600 f/4 lens and I put a 1.4x TC on it for a 840mm f/5.6 lens won't that be a very similar FOV? And I can use my existing camera? And I can take 1,000 photos align and stack them in software? How much better would this $45k system be than that?
mackman··on Null Island is one of the most visited places on Earth, and it doesn’t exist
Go look for it on the maps Facebook renders for a fun Easter egg.

https://imgur.io/a/zjzZjhQ

I wonder if anyone will recognize it.

mackman··on ManyCam dishonored my lifetime license
My dyndns perpetual tokens lasted 15 years or more. Sadly they got acquired and it finally stopped.
mackman··on Lossless Image Compression in O(n) Time (2021)
I think using the same algorithm but swizzling the pixels might help (process them in Z curve order).
mackman··on MacUser 1996: How to Rig Up the Fastest Photoshop Machine
Loved my Power Tower! BeOS, Rhapsody DR 1 and 2. But then I started running Linux on it in college and never looked back.
mackman··on Decreasing the number of memory accesses
I think this article is about cache locality, but temporal cache locality. Which is just as important albeit orthogonal to what you are describing.
mackman··on If you're so good, why aren't you making 600k at BigTech?
Part of his argument here is stock is funny money. I think that is less true at FAANG today. You start vesting in a quarter, vest monthly after that, and RSUs are treated as income unlike options. Yes stock may change a bit but it’s more likely than not to stay within the 550-650k range. It’s not at all like illiquid startups.
mackman··on SVB CEO Greg Becker cashed out $2M just before the collapse
You really don’t think he knew this was coming six weeks ago?
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