maccam94

34 ms·

121.
by maccam94 5y ago
FB doesn't want hardware to run at lower than rated speeds. Their tool allows them to detect when it happens and remediate the issue.
122.
by maccam94 5y ago
Prior to Starship, just getting large enough structures and mass into space has been the limiting factor. There is a minimum diameter for spin gravity to avoid disorienting vestibular side-effects. Spinning two spacecraft attached by a teth
123.
by maccam94 5y ago
I was considering buying a new dev machine a few months ago. I'd been hearing great things about the new Ryzen chips with 16+ cores, but then I saw the price tag and thought about what percentage of the time I'd even be fully util
124.
by maccam94 5y ago
Sorry, my first thought was that it requires more delta-v to enter a lunar capture orbit since the gravity is weak, but I just double checked the delta-v roadmap and it's actually not that high. However, it is a bit problematic that la
125.
by maccam94 5y ago
Water yes, but I haven't seen anything about CO2 so I think you're stuck with hydrogen-oxygen engines (which have different tradeoffs than methane-oxygen engines). https://everydayastronaut.com/raptor-engine/
126.
by maccam94 5y ago
There are no expendable engines in the first stage. Engine swaps do happen if anomalies are found in testing or during the refurb process, but I don't have stats on how frequent that is. r/spacex might track engine history.
127.
by maccam94 5y ago
The main issue was cost. A lot of basic research had to be done, developed, and put into production on an accelerated timescale. Control systems and processing capabilities were much more primitive which hampered reusability. Materials and
128.
by maccam94 5y ago
The moon has some additional practical hurdles compared to Mars: 1. No atmosphere means no weathering, so all of the moon dust is incredibly sharp and easily coats equipment when it gets kicked up. This dust quickly wears out joints and con
129.
by maccam94 5y ago
I'd say 2x probably isn't worth causing major ecosystem pain. Maybe if it opened up potential for 10-100x speedup for some fairly common workloads or improved developer velocity.
130.
by maccam94 5y ago
The ISS is in a relatively low orbit at ~400km altitude, geostationary satellites are up at 35,000km and have basically zero drag.
131.
by maccam94 5y ago
If you haven't heard of it yet, you might find the rust language interesting. It is the most likely candidate for replacing C in applications like this today. It is kind of like C with built-in static analysis to enforce memory safety,
132.
by maccam94 5y ago
Sorry, the "it" I was referring to was mining hardware, not solar generation. Crypto-mining, if it continues to grow unabated, at some point will start to increase the price of energy and encourage more energy production. Some of
133.
by maccam94 6y ago
It still generates heat, which warms the planet.
134.
by maccam94 6y ago
I'm afk so I can't check the current numbers, but as of a year ago Linux was up to 27.8M loc: https://www.theregister.com/2020/01/06/linux_2020_kernel_sys...
135.
by maccam94 6y ago
Firefox on iOS isn't really Firefox, it's Webkit with a Firefox skin (because Apple won't allow any other web engines on iOS).
136.
by maccam94 6y ago
Perseverance was ~1 ton of mass at launch, and cost ~$2.2B (plus $243M for the Atlas V rocket). SpaceX's Starship aims to deliver up to 100 tons of payload to Mars for ~tens of millions of dollars. Imagine how much science equipment th
137.
by maccam94 6y ago
It only needs one or two of its three engines to land.
138.
by maccam94 6y ago
What's a firmware scan? I believe that most router OS images and driver blobs are encrypted these days.
139.
by maccam94 6y ago
The bandwidth available via undersea fiber optic cables is orders of magnitude higher than via satellite. I'm sure governments have backup satellite links but their use would be restricted to top priority traffic if something catastrop
140.
by maccam94 6y ago
Starship will be an incredible game changer for space economics. Look at this progression: - $50,000/kilogram for 27,500kg of payload (Space Shuttle, 1981-2011) - $2,500/kg for 22,800kg of payload (SpaceX Falcon 9, 2010-present) -
141.
by maccam94 6y ago
> to not nauseate the human body, they need to be fairly large I completely agree with your reasons why it hasn't been explored further (sadly budget issues killed even a small experimental module for the ISS[1]). Just how large is
142.
by maccam94 6y ago
Did you convert it by hand and translate the code into idiomatic rust? Or just run some C code through c2rust? Because the latter will not produce anything like a typical rust program, it will be C types and logic with minimal changes to ma
143.
by maccam94 6y ago
The satellite imagery is from Google's Keyhole satellites. But the bird's eye view zoom levels are from aircraft.
144.
by maccam94 6y ago
The earliest versions of the rust compiler were written in Ocaml, which is also unlikely to have been built in a trusted way by these organizations. mrustc exists to be a way to bootstrap trusted builds of rustc.
145.
by maccam94 6y ago
Some distros ship programs compiled with rust, and they do so using the version of rustc in the repo.
146.
by maccam94 6y ago
> HTTP client in Rust using curl Which could possibly use Hyper under the hood :-P https://github.com/curl/curl/wiki/Hyper
147.
by maccam94 6y ago
The placement of the address bar is configurable, but maybe the tab view should flip along with it...
148.
by maccam94 6y ago
As of today, some ads pay per click (CPC), but most ad spots pay per 1000 views (CPM). Ads can influence behavior after they are viewed, regardless of whether the user decides to interact with the ad. I'm sure Google has put tons of ef
149.
by maccam94 6y ago
I didn't realize there was any other way to interpret it besides "getting green (successful) results for all of the tests" (there are 8 test stages planned). I think we're both wrong though: "The term “green” refers
150.
by maccam94 6y ago
Falcon 9 launches are often less than $60M. A big chunk of that is the disposable second stage. Fairings are also a few million dollars. Insurance rates on Falcon 9 launches are currently 4%, so ~$2.4M. I'd be shocked if non-rocket&#x2

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