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Running Nvidia CUDA PyTorch container project/pipelines on AMD with no changes

1•medicis123•3m ago•0 comments

Building a (Not Very) Portable Xbox

https://hackaday.com/2025/09/21/building-a-not-very-portable-xbox/
1•rolph•5m ago•0 comments

Zebra cows and Teflon food make Ig Nobel Prize winners

https://www.bbc.com/news/articles/crkjzxrrkd5o
1•gebt•12m ago•0 comments

Visualizing the UUID for Different Versions

https://gangtao.github.io/visualizing-uuid/
2•gangtao•18m ago•0 comments

Rave Flyers

https://www.counter-print.co.uk/search?q=rave%2bflyers
1•rglover•18m ago•0 comments

A super-intelligent AI won't kill us, people believing the AI will kill us

2•OhMeadhbh•19m ago•1 comments

iPhone Air sets the stage for the future

https://betterdesigned.io/p/iphone-air-sets-the-stage-for-the
1•pwthornton•23m ago•1 comments

PostgreSQL 20.15: OAuth Authorization/Authentication

https://www.postgresql.org/docs/18/auth-oauth.html
2•stephenlf•30m ago•0 comments

Show HN: Rerouter – minimalist no-code automation platform

https://rerouter.app/
1•Cabbache•30m ago•0 comments

AI will make smart people smarter and stupid people dangerous

3•eibrahim•33m ago•3 comments

Show HN: Gocd – a lightweight Go-based CI/CD tool that runs on your dev machine

https://github.com/simonjcarr/gocd
4•soxprox•36m ago•0 comments

Canon EOS C50 is its smallest and lightest cinema camera

https://www.dpreview.com/news/0631874757/canon-eos-c50-cinema-camera-announcement
2•PaulHoule•36m ago•0 comments

Show HN: Tips to stay safe from NPM supply chain attacks

https://github.com/bodadotsh/npm-security-best-practices
5•bodash•38m ago•0 comments

Lightweight, highly accurate line and paragraph detection

https://arxiv.org/abs/2203.09638
3•colonCapitalDee•39m ago•0 comments

Trump administration set to tie Tylenol to autism risk, officials say

https://www.washingtonpost.com/health/2025/09/21/trump-autism-announcement-tylenol-leucovorin/
6•almog•42m ago•5 comments

About Professional Software Development

https://medium.com/@fluxusars/about-professional-software-development-15f52a681f45
4•fluxusars•43m ago•1 comments

The performance impact of vertex shader exports

https://interplayoflight.wordpress.com/2025/09/21/the-performance-impact-of-vertex-shader-exports/
1•ibobev•45m ago•0 comments

Procedural Island Generation (VI)

https://brashandplucky.com/2025/09/28/procedural-island-generation-vi.html
2•ibobev•45m ago•0 comments

Using Yubikey FIDO2 to Login in Debian/GDM

https://www.4rknova.com//blog/2022/09/02/yubikey-login
2•ibobev•48m ago•0 comments

CatDoes

https://catdoes.com/
1•nafisehamiri•48m ago•1 comments

Risks of black market GLP-1 medication alternatives

https://www.npr.org/2025/08/22/nx-s1-5511707/ozempic-zepbound-wegovy-monjauro-knockoff-generics
2•indigodaddy•58m ago•0 comments

Sustainable Nanocellulose UV Filters for Photovoltaic Applications

https://pubs.acs.org/doi/10.1021/acsaom.4c00484
1•zdw•1h ago•0 comments

Uruguay ditched fossil fuels for renewables

https://www.washingtonpost.com/climate-solutions/2025/09/19/uruguay-renewable-energy-climate-brea...
3•pcl•1h ago•0 comments

LoRA-XS: Low-Rank Adaptation with Small Number of Parameters

https://arxiv.org/abs/2405.17604
1•jxmorris12•1h ago•0 comments

When Efficiency Isn't Wasteful

https://jessitron.com/2025/09/21/when-efficiency-is-wasteful/
2•zdw•1h ago•0 comments

"Causal" is like "error term"

https://statmodeling.stat.columbia.edu/2022/05/14/causal-is-what-we-say-when-we-dont-know-what-we...
2•neehao•1h ago•0 comments

How Apple's New iPhone Chips Enable On-Device AI [video]

https://www.youtube.com/watch?v=FviaHPrFhTg
2•mgh2•1h ago•0 comments

Mastodon gGmbH offering paid hosting, moderation, and support for organisations

https://blog.joinmastodon.org/2025/09/service-offerings-from-mastodon/
3•riffic•1h ago•1 comments

The Joy of Fortune: Serendipity in the Terminal

https://kennethreitz.org/essays/2025-09-21-the-joy-of-fortune
2•zdw•1h ago•0 comments

Show HN: I made an app called Girl Math that makes saving money fun

https://apps.apple.com/us/app/girl-math-savings-tracker/id6751606640
4•jfeng5•1h ago•0 comments
Open in hackernews

Rail travel is booming in America

https://www.economist.com/united-states/2025/09/21/rail-travel-is-booming-in-america
54•martinpw•1h ago

Comments

tonetegeatinst•1h ago
I used to have to take the train to college and back home on breaks and it was nice trip.

You can't bring a whole dorm and your closet, but a backpack and a bag for clothes are manageable. I always brought some bags of beef jerky and would watch the scenic view or listen to an audiobook. Just sitting on the train, enjoying my snack and watching nature was a nice way to pass time time.

raybb•57m ago
I heard that Caltrain toyed with the idea of partnering with waymo to get people to and from train stations more affordably but dang wouldn't it be nice if one of the ride hailing companies started offering shuttle type services to get you to the train station but while sharing with other people.

Better bus coverage and reliability would be ideal but perhaps this could be used to help make the case in the mean time.

cjensen•43m ago
ACE Rail (from Stockton to San Jose) has an absolutely wonderful network of eight shuttle buses that meet the train when it arrives at the Great America station[1]. They fan out across most of the Silicon Valley so that there's no need to wait for a bus or make connections between buses.

Every commuter rail line really should do this. Obviously Caltrain could not do this for every train, but how about some trains?

[1] https://cdn.acerail.com/wp-content/uploads/ACE-Shuttle-Map-S...

Vinnl•27m ago
The Dutch railways have offered ridiculously cheap bicycle rentals by almost every station for years now, and it's so helpful. No need to plan travel times, just tap your card and go.

Of course this also requires proper bicycle infrastructure to be available, but it shows how well this could work.

JumpCrisscross•27m ago
> Better bus coverage and reliability would be ideal

Busses seem suboptimal if you don’t need a driver. They’re too big.

Peoples’ travel plans in space and time are naturally heterogenous; the less we force passengers to travel to and from stops or change their plans to match a schedule, the more people will ride.

JadeNB•17m ago
Why would this be an issue with the driver? I don't mean that combatively; I really don't see it. It seems to me that any form of transit, autonomous or not, either runs on some sort of centrally controlled schedule subject to optimization, or can be summoned on demand, in which case it only works as long as not too many people use it (usually because of cost), or else it will lead to traffic congestion and worsen rather than improve traffic.
JumpCrisscross•13m ago
> Why would this be an issue with the driver?

Drivers are the dominant operating cost of a bus system, and they’re typically paid regardless of ridership. That means you have a minimum ridership per driver required to offset their cost.

Bus systems thus size the bus and route to ensure that minimum ridership. That, in turn, requires aggregating demand, i.e. forcing people to change the places and times of their transit to line up with the bus’s. Analogous to lift and drag, the more you force people to change their schedules, the more you lose potential demand to alternatives.

If you don’t have a driver, you can make your transports as big or small as you’d like. In rare cases, they’ll be bus sized. But most busses either aren’t consistently full or lose a lot of potential riders because their schedules and stops are inconvenient. A fleet of smaller vehicles sops up that demand without hauling around a bunch of dead mass off rush hour.

JadeNB•7m ago
I'm not sure I agree with the conclusions, but I know that I haven't thought about it in detail and you obviously have. Thank you for the considered argument.
jeltz•16m ago
Why? During rush hour buses transport like 100 people each. That is a lot of cars that would congest the roads.
cogman10•9m ago
Not when you are operating around scheduled transport like trains and planes. Buses are optimal in that case.

If you've ever taken a cruise you've seen this work beautifully. Even with multiple excursions, busses are optimal for getting people around because the 100s of people on the ship are ultimately going to the same places.

JumpCrisscross•6m ago
> Even with multiple excursions, busses are optimal for getting people around because the 100s of people on the ship are ultimately going to the same places

Cruises are one of the rare cases where our buses are correctly sized and competitive against rail, in large part because you’l continuing the social experience of being on a cruise ship.

When you consider what makes a bus-sized bus perfect for tour groups and the like, it quickly becomes apparent why they’re not optimally sized for transit outside the constraints imposed by driver economics.

jolux•52m ago
The Avelias are nice but the problem with the Acela hasn't been the rolling stock in a long time, it's that it can only reach top speed (~150mph) on a tiny portion of the track, mostly between Boston and Providence and some more in New Jersey. The rest of it, we're running proper high-speed trains at like 70mph, unfortunately. Fixing the alignment and upgrading the track is a kind of political nightmare that upgrading the trains just isn't.
pkulak•22m ago
The problem with every train is that it doesn't go faster. But Acela is already faster than driving, which is a benchmark no other train can match in North America. Probably faster, door-to-door, than flying, unless you ride its entire length.
inferiorhuman•9m ago
Yep. What Metro North is doing is a travesty.
wkat4242•49m ago
Don't say that too loud. The current administration is all for rolling coal and I wouldn't put it past them to hinder this because it's too environmentally friendly. :(

I don't really understand why because their main audience is rural people and those are the worst hit. Climate change causing extreme weather. A lot of them would even be farmers. Doubly affected, not just a danger to their homes but also their livelihood.

I mean a city of millions will just build a big wall (like in the expanse) Skyscrapers are built to withstand a lot. But rural communities won't have that kind of money.

I'm sure there's a good chance the worst predictions don't come true but even if it's half as bad it's very serious. We're already too late to stop the start of it.

Ps can't read the article as it's paywalled

righthand•42m ago
> Ps can't read the article as it's paywalled

Then buy a subscription to the economist or be a hacker.

softwaredoug•37m ago
They already blocked Caltrain funding meant to get closer to linking LA and SF
richwater•19m ago
Give me a break. The Trump administration is a small part in that absolute boondoggle.
mschuster91•30m ago
> I don't really understand why because their main audience is rural people and those are the worst hit.

For rail specifically: for rural Americans, passenger rail worth the name (aka what we get in Europe) is something that they see as unachievable, something for "librul city dwellers". When all they get from rail is noise and crossings blocked for hours [1], it's hardly a surprise that rail ends up being yet another culture war issue.

> Ps can't read the article as it's paywalled

Go to archive . today, enter the URL of a paywalled site, pass a CAPTCHA, off you go. It works with a bunch of popular news sites to bypass their paywalls, and for free but ad-infested, you'll get an ad-free experience.

[1] https://www.nytimes.com/2023/07/11/business/blocked-rail-cro...

threemux•23m ago
It works on many sites, but the Economist has foiled it as far as I can tell. This one just shows the same snippet you'd get in a regular browser
inferiorhuman•3m ago

  for rural Americans, passenger rail worth the name (aka what we get in
  Europe) is something that they see as unachievable
Which is a shame because it wasn't always like that.
martinpw•43m ago
Took Amtrak from LA to San Jose last week, which was a good experience. The train runs along the coast for a good stretch, from Ventura through Vandenberg and then through the hills. It's certainly not the fastest way to go (~10 hours) but you can leave in the morning, have a couple of sit down meals on the way, watch the world go by, work if necessary, and be in San Jose in the evening. Probably not something to do regularly, but a great occasional change from flying.

Since Amtrak is often delayed due to freight having priority, traveling the other way is more risky from a scheduling point of view, since the train starts in Seattle and could already be heavily delayed by the time it gets to San Jose.

https://www.amtrakvacations.com/travel-styles/famous-routes/...

pkulak•27m ago
> due to freight having priority

Fun fact: by law, Amtrak has priority. Not that it matters much, even back when laws themselves mattered.

JadeNB•21m ago
> Fun fact: by law, Amtrak has priority. Not that it matters much, even back when laws themselves mattered.

Are you sure about that? I've never looked up the law, but my understanding is that, for most (all?) of its routes, Amtrak is running on privately owned track, and, on such track, freight has priority.

(I'm surprised at the number of downvotes. The replies indicated that I'm wrong, which is awesome in the sense that I like riding Amtrak and want it to have priority, and so I understand the frustration; but I think that I cannot be the only one who has heard from every Amtrak rider they've talked to that freight has priority, and surely it's a good thing to seek an authoritative answer? Maybe it looked like I was rhetorically saying that someone was wrong rather than honestly seeking clarification.)

MBCook•15m ago
Yep. Federal law requires passenger trains to get priority.

But for some reason the government basically stopped enforcing it like 40 years ago.

So in practice it tends to work the other way.

cogman10•14m ago
Yes [1].

[1] https://www.planetizen.com/news/2025/09/135986-amtrak-trains...

crockeo•11m ago
My understanding is that as part of the Amtrak Improvement Act[1] Amtrak is given preference over freight rail, even on private track. However only the Department of Justice may enforce this, which it has done only once.

Fair warning I haven't read the text of the law in full, only heard this second hand.

https://www.congress.gov/bill/93rd-congress/house-bill/15427

blendergeek•10m ago
Due to the history of Amtrak this is actually true. The railroads in America (while privately owned and operated) were built with much government subsidy. The railroad companies originally provided passenger service. Eventually, to ensure this service continued a law was passed that prohibited railroads from dropping passe nger service. After the rise of personal cars coinciding with the massive federal investment in car infrastructure in the 1950s with the interstate hughway system, passenger rail travel was in free fall in the late 60s and the railroad companies begged to be allowed to end passenger service. Congress stepped in and nationalized the passenger service exempting the railroad companies from their mandate to provide passenger service while requiring them to give passenger trains priority in scheduling. So, TL;DR passenger trains have legally mandated priority over the freight trains of the host railroad.
returningfory2•16m ago
To the downvoters: this comment is correct. E.g. [1] for an example of this being enforced.

Apparently the problem is the law is not enforced that much? And that there are loopholes around it.

[1] https://www.justice.gov/opa/pr/norfolk-southern-agrees-give-...

andrewguenther•6m ago
It's not an enforcement issue so much as it is a heavily exploited loophole. Part of the reason freight trains are so long is so that they can't fit in passing sidings. Since Amtrak does fit, they end up having to yield because the freight trains simply cannot.

Could this be fixed by legislation on max train length to ensure all trains fit in sidings? Yes. Will that legislation get passed? No.

An interesting video on the subject: https://youtu.be/qQTjLWIHN74?si=t3u3iyZj1kRQQUCe

mschuster91•3m ago
The problem is, overtaking is one thing when you got two parallel rails and ample point switches.

But when you don't have them or only every 100km or whatnot, or any of the potential places (such as in a train station) just isn't long enough to accept and buffer a 3 miles long train... then good luck, there just is no physical opportunity for the faster passenger train to speed ahead, not to mention the absurd amount of energy wasted in braking and then re-accelerating that 3 mile freight monster.

jeltz•21m ago
Working on trains is also often nice so you do not really lose much time. You can just do a normal workday at the train including lunch and then quit working for the day when you arrive.
Teever•37m ago
I came across this video[0] a little while ago which gives a pretty in depth look at the efforts being made to modernize bridge and tunnel infrastructure in a crucial but small subsection of the American rail network.

[0] https://www.youtube.com/watch?v=6yLzfNTrULg

glitchcrab•28m ago
I knew this would be the B1M just from your description. I’ve been a subscriber of theirs for quite some time now - they have some fascinating videos.
techblueberry•36m ago
If I never had to fly domestically again it would be too soon, high speed rail ftw!
mothballed•35m ago
Don't worry, if high-speed rail displaces flight they'll have the federal gropers jobs program for that too. Soon enough it will suck just as much as flying "for your security."
oblio•21m ago
I recently saw that Canadian passenger railways have security checks and bag check-in just like airlines :-))

They're like aliens seeing humans preparing food but not understanding what taste is.

JadeNB•19m ago
> I recently saw that Canadian passenger railways have security checks and bag check-in just like airlines :-))

It's probably harder to drive a train into something than it is to fly a plane into something, but a bomb on a train could do a lot of damage even if it wasn't as cinematic as a bomb on a plane. And, having traveled on Amtrak and seen what people try to cram in to the limited space available, it's not clear to me that some sort of baggage control is automatically a bad thing.

(Don't get me wrong, I like not having to go through those airport-style controls, but it's a tragedy of the commons sort of thing, where abuse of it by a few renders it unpleasant for everyone.)

oblio•16m ago
> but a bomb on a train could do a lot of damage even if it wasn't as cinematic as a bomb on a plane

Same for a bus, tram, funicular, metro, ferry. At what point does the insanity stop?

A crowded bus in Bucharest probably has 200 passengers and at peak times it could drive near stops and streets where hundreds, if not thousands of other people, are in a 100m radius.

2OEH8eoCRo0•11m ago
The rails are also a target though. I'm surprised we don't see more bad actors sabotaging high speed passenger rail tracks.
einpoklum•35m ago
Access to Economist articles is not booming in America though :-(
softwaredoug•34m ago
There is a private train system in Florida that connects major cities. Sadly, my understanding is its financials are not great. Hopefully that changes.

https://www.gobrightline.com/

dayofthedaleks•25m ago
The engineering is not stellar either. 96% of the line's crossings are at grade. Those intersections are undersignaled with barriers that are easy to drive around.

If you know anything about Florida drivers you won't be surprised to hear there have been 180 fatalities on Brightline since its inception in 2017.

umeshunni•10m ago
They're also building the same thing between Las Vegas and SoCal: https://www.brightlinewest.com/

(un)surprisingly, this will be operational well before the California HSR (SF->LA) boondoggle.

inferiorhuman•6m ago

  (un)surprisingly, this will be operational well before the California
  HSR (SF->LA) boondoggle.
Yeah, maybe. Even if Brightline succeeds in building something it's going to fall short of connecting LA to Vegas.

https://www.npr.org/2025/09/11/nx-s1-5495584/brightline-west...

inferiorhuman•8m ago
Yeah in Florida Brightline runs the deadliest railway in the country by a pretty good margin. In California they've pared back their grand plans dramatically because (surprise, surprise) even when you're cheaping out on the infrastructure railways are expensive.
pkulak•28m ago
Whenever I go to the East coast, I make a point of finding some reason to ride Amtrak, preferably Acela. There's just something magical about staying anywhere between Boston and DC, and yet only being one relaxing, couple-hour trip away from central Manhattan, downtown Philly, etc.

I wish the West Coast also had frequent service between Vancouver, Seattle, Portland, SF, LA, and points between. Driving and flying stresses me out and is generally an awful experience. When I arrive by train, I'm more relaxed than when I started.

myvoiceismypass•16m ago
It always floored me when I moved to the Bay Area that Caltrain from SJ to SF took about as long as Amtrak from Philly to NYC (twice the distance). I know they are different systems and electric Caltrain is faster, but still, it felt like a step back rail wise. Also, Amtrak out here stops running so ridiculously early, which is very frustrating.
jwagenet•5m ago
Caltrain is a commuter rail and Amtrak is regional. Caltrain makes 15-20 stops between SF and San Jose. They aren’t the same sort of system at all. It’s like comparing Amtrak to Metro North.
xnx•25m ago
I can't read the article. What does it say?

It looks like Amtrak trips are up 7.5% since 2019 (https://ti.org/antiplanner/?p=23182). Does that count as booming?

JumpCrisscross•25m ago
The low-hanging fruit is regional rail. Caltrain, LIRR, et cetera. That together with a robust metro system that links parking garages and airports is the realistic multi-modal transport we need.

Too many rail projects seem to have been prosecuted by purists who are anti-car or anti-plane. That leads to bloat, or ignoring designs that would increase real ridership (e.g. adequate parking at endpoint, or RORO stock).

jackcosgrove•15m ago
I have investigated taking Amtrak for a family trip to do something different. "The journey is the destination" or something like that. I was branding it "slow travel" to the family so we could use it as a sort of modern life/digital detox. I also looked into a trans-Atlantic passage on the QM2.

I'm sad to report that renting a family bedroom or two joined bedrooms on Amtrak to take a journey on say the California Zephyr didn't pencil out. It is costlier than flying (about $2000 vs $1600 at the low end for both options, resp.) Even if you account for the cost of staying two extra nights at the destination it about breaks even.

With children I don't want to risk the days of travel becoming an ordeal as opposed to hours of flight time. The "digital detox" might quickly go sideways and require hours of screentime pacifiers. Maybe when they are older.

Happily the QM2 actually made financial sense and there would be more room to move about and explore the ship.

I think rail travel makes the most sense in the Acela context the article opened with - routes between cities that take less than a day. For cross-continent travel the time savings of air travel make rail travel a harder case to argue.

heelix•2m ago
So funny enough, I'm sitting on a plane right now because the amtrak train was late, then announced a different trip number then what was on the ticket. No information on what was coming or leaving. It was a small city depot, but it was nothing like I've come to expect in Europe. The Chicago/Minneapolis ticket was cheap. Seats on the way up were comparable to first class. Wifi did not work on the way up. Did turn a couple hour journey into an all day affair. My kingdom for a bullet train like others have.