HNHacker News
TopNewBestAskShowJobs

alfiopuglisi

204 karma · joined July 1, 2020

submissionscomments
alfiopuglisi··on AMD expects to outsell Intel in Q4 for the first time in history
Honest question, couldn't one just ask Claude to make a better driver for it? And reimplement pytorch on top of that or something?
alfiopuglisi··on New Dwarf Planet Candidate in Our Solar System
Go to https://ssd.jpl.nasa.gov/horizons/app.html#/

Edit target body to "2026 ED138"

Click "Generate ephemeris"

About RA=18:11:01 DEC=-42d 14m 31s today

18 11 01.74 -42 14 31.4

alfiopuglisi··on Gemini 4 Carbon
Dilithium
alfiopuglisi··on MiMo-v2.5-Pro-UltraSpeed: 1T model with 1000 tokens per second
These guys: https://taalas.com/products/
alfiopuglisi··on IDF officers ordered to fire at unarmed crowds near Gaza food distribution sites
Nope. It's basically forgotten. At least, I haven't heard anyone talking about it, either in my circles or in the media.
alfiopuglisi··on Passkey technology is elegant, but it's most definitely not usable security
Thanks for the explanation, it was very clear. Especially the bit about never being able to see your own private key. Ok I get it, it's to prevent malware from doing the same, but it still vaguely distasteful.
alfiopuglisi··on Passkey technology is elegant, but it's most definitely not usable security
In my limited understanding, they are similar to SSH public/private key pairs. But the details continue to elude me, no matter how much I read about them. Won't try them out until I get how they work.
alfiopuglisi··on Highest-resolution images ever captured of the sun’s surface
It's quite difficult with current rocket technology: you have to counteract most of the Earth-given 30km/s speed around the Sun in order to get close (it's smaller than Mercury's orbit), and then brake again to circularize the orbit once you are there. I am not sure that it can be done with what we have now. That said, it's not that far off either.
alfiopuglisi··on Saturated fat: the making and unmaking of a scientific consensus (2022)
7.2 grams a day is still a lot. Low-sodium diets aim for less than 3 grams a day, and it is not that difficult to go even lower. Whether a near-zero sodium intake is good or not, it's another can of worms, but a study looking at a huge-salt diet vs. a high-salt diet does not look very useful.
alfiopuglisi··on Saturated fat: the making and unmaking of a scientific consensus (2022)
Well, at least they don't sell seed oil :)
alfiopuglisi··on The Dawn of a New Era for Supernova 1987a (2017)
The ring is not a product of the supernova. It's pre-existing material, that is being energized by impact of the supernova ejecta (it took a few months for it to start brightening).

There are actually three rings, a smaller one around the previous star's equator, and two larger ones above and below. The hourglass-like figure is actually quite common, produced by the star rotaton.

alfiopuglisi··on NASA's Europa Clipper Launch
It's a limitation of the Falcon Heavy, the launcher used this time. A future, more powerful one could do it while being reusable.
alfiopuglisi··on Earth has caught a 'second moon'
It goes on until an Earth's day is as long as a month. Both will face each other in a fixed way. But it takes many billions of years and the Sun will burn both to a cinder much before that.
alfiopuglisi··on New research on anesthesia and microtubules gives new clues about consciousness
It's not so uncommon in science to come to a strange conclusion by excluding all "reasonable" alternatives. For example, black holes have a similar status: no one has conclusively seen one, but we know of no mechanism for matter to support itself beyond a certain density, so black hole it is.
alfiopuglisi··on NASA is selling a brand-new Moon rover: Never used, one previous owner
I am in Italy as well and the link works fine.
alfiopuglisi··on Everything you need to know about Python 3.13 – JIT and GIL went up the hill
The day your wish is fullfilled is the day I stop working with Python. I can't stand all those useless braces everywhere, why are they there at all since good practice mandates proper indentation anyway?

I am at the point where I prefer single quotes for strings, instead of double quotes, just because they feel cleaner. And unfortunately pep8 sometimes mandates double quotes for reasons unknown.

alfiopuglisi··on Tech failure nearly caused massive flood in Amsterdam
Not just the Netherlands, most of Europe counts floors like this: ground, first, second, etc.
alfiopuglisi··on Caltech, long a bastion of male students, enrolls first class of majority women
Look for the Global Gender Gap Report of the World Economic Forum, it uses exactly that metric.
alfiopuglisi··on Olivetti Programma 101: At the Origins of the Personal Computer
Depends. For example cupy (https://github.com/cupy/cupy) is developed by a Japanese company and I find it extremely effective.
alfiopuglisi··on How fast can a human possibly run 100 meters?
Mmmhh, not sure about that. Most people, even if not reaching high speeds, can still go substantially faster on a bike than running. Even grandmas, it's all relative.

People like Bolt should be compared with bike sprinters, who top out at around 45mph.

alfiopuglisi··on How fast can a human possibly run 100 meters?
Most people won't be able to even reach 27.8 mph on a bike, you need a decent road bike and some training.
alfiopuglisi··on Women who make Samsung semiconductors are striking
If you own enough of these automated factories, you don't need to sell anything at all. Just produce whatever luxury item you want, in addition to mundane things like food and shelter (in the form of caviar and villas, because why not?).

That will mark the time when technology is advanced enough that humanity will fracture with small independent groups going out and fending for themselves, possibly in outer space. Some SF scenarios call them "great houses", because they somewhat resemble feudal kingdoms where a kind of extended family rules, except there are no peasants.

alfiopuglisi··on Aboriginal ritual passed down over 12,000 years, cave find shows
Please do share! Often those are the most interesting ones :)
alfiopuglisi··on Super Heavy has splashed down in The Gulf of Mexico
People happy and proud of their work. What's wrong?
alfiopuglisi··on Simple tasks showing reasoning breakdown in state-of-the-art LLMs
No current LLM understands words, nor letters. They all have input and output tokens, that roughly correspond to syllabes and letter groupings. Any kind of task involving counting letters or words is outside their realistic capabilities.

LLMs are a tool, and like any other tool, they have strengths and weaknesses. Know your tools.

alfiopuglisi··on New telescope images of Jupiter's moon Io rival those from spacecraft
> I wonder how much cheaper are land-based telescopes over the lifetime of instruments such as the Hubble or the Webb.

10-100 times cheaper. An LBT night is around $50k-100k, which over 10 years corresponds to $300 millions. JWST total budget is about $10 billions.

True, JWST can operate close to 24/7. On the other hand, land-based telescopes are under constant refurbishment and upgrades, and they become more powerful over time.

alfiopuglisi··on New telescope images of Jupiter's moon Io rival those from spacecraft
> I assume it's used as a mono and binoc platform, depending.

Correct, it depends on the observation. Both sides have adaptive optics correction, but they work independently. This particular instrument (SHARK-VIS) is mounted on the "right" side, while SHARK-NIR is on the "left" side.

alfiopuglisi··on New telescope images of Jupiter's moon Io rival those from spacecraft
It's a technological tour-de-force involving deformable mirrors that change shape every millisecond, cameras able to count every incoming photon, and special computers designed to calculate the next correction within microseconds. As usual wikipedia has an introduction: https://en.wikipedia.org/wiki/Adaptive_optics

Or try: https://andor.oxinst.com/learning/view/article/introduction-...

alfiopuglisi··on In one of the US's hottest deserts, utilities push gas rather than solar
A Tesla Megapack 2 can provide about 2MW of power, so you need 50 of them to replace the gas peaker. And since they have a 3.8MWh capacity, they only go for about two hours before being depleted, so if you want to cover the whole night when solar is not producing, you need 6x more, or 300 in total.
alfiopuglisi··on In one of the US's hottest deserts, utilities push gas rather than solar
The are negative wholesale, not for the private end user unfortunately.
Page 1 of 3Next →