- I'm curious if you used AI during development and how it handled Fortran
- It seems you’ve written an extensive blog post about this, but I don’t see a direct link anywhere!
- To the repo? It’s in the blog post head, in section under first screenshot,
- No, I mean the other direction.
The repo is what’s this HN post links to, and I don’t see a link to the blog post in it or in other comments here. The blog post is interesting!
- Ok got you. Good point, added to repo README
- Love seeing niche Show HN projects like this. The choice of Fortran is wild but that's what makes it fun. As someone building small Mac utilities, I appreciate any project that proves you don't need a massive stack to ship something useful.
- Thanks for the feedback!
We got a spec for Assemblersky. Will be a weekend project. Cancel Easter :) And probably Midsummer too…
We got image composer and decoder plugged in in dev env, but will let this first open version breathe first. ASCII or early Apple algo
Fortran-fast feed builder probably in next open version. It crunches fast
Morning, 9 o’clock in Sweden, coffee and check-the-feed-on- Fortransky-time :)
- COBOLsky. It’s enterprise webscale.
- I’ve never seen fortran before. Wow, that looks more readable than a lot of modern languages.
- Modern versions of Fortran are reasonably pretty.
It’s a fairly nice language. You can probably get better performance out of C/C++ with unlimited effort. But, it is really nice for allowing computational scientists to get, like, 95% of the way there.
I think it actually suffers from the reputation as this ancient/super hardcore performance language. The name comes from “Formula Translating System,” which implies… it was written for people who speak human languages first!
- ive maintained a simulation software where the core is written in fortran. its using some intel math library that is expensive that i cannot recall, does immense calculations and makes faster binaries than c on every compiler we tried
- Have you tried using the restrict keyword everywhere you can in c?
In Fortran, arrays are not allowed to overlap which allows some optimisations. c has rules in the spec about how memory accesses must occur, and overlapping arrays being possible prevents some compiler optimisations. The restrict keyword is you promising that the memory at some pointer won't be accessed through another pointer.
You can compare two implementations in Fortran/c using godbolt to see how each of them compile.
- Interesting.
MKL is Intel’s famous numerical library (it includes things like BLAS “basic linear algebra subroutines” and fast Fourier transforms). It is availible for free, but IIRC they had some support plans maybe, maybe that’s what you are remembering?
It is closed source, but you can look at the source of the best open source competitor libflame/BLIS, and see that most of the performance comes from C and assembly.
It is difficult to beat “unlimited effort” C, but not many program really justify that treatment.
- MKL used to not be free. You had to buy it from a local reseller for a few hundred dollars per developer.
- Modern dialects of Fortran, sure.
Old school Fortran from before they added cleaner and more structured elements is terrifying.
- out of curiosity, why fortran? no disrespect. I wrote a lot of scientific software in the earlier days of my career and I learned fortran to update ocean modeling software.
- You are not the first one to ask :)
We built Cobolsky. Will go public soon. Parallelly too curious on Fortran. The world is better with a Fortran-based social network client in it :)
When we are building the feed composer, in next version, Fortran will be great for the algorithm etc.
Keeping the ancient languages alive. I built some Cobol stuff many years ago. Back at it again. Rusty.
Both Cobolsky and Fortransky looks great on Swordfish90’s cool-retro-term, but we are building our own terminal for Fortransky too. There is a blog post with screenshots over at Patreon/formerlab
Can’t get enough Fortran
- > The world is better with a Fortran-based social network client in it
If you don't mind me asking, why is the world better with more Fortran-based software?
- Our modern languages are built on it, and it’s incredibly fast,
so it deserves to be kept alive. We owe a great deal to the people who wrote it in the 1950s I guess
- This thread makes me happy
- I know right! I was pleasantly surprised. It has to be one of the greatest news I have heard in a while.
- > Our modern languages are built on it
It's part of the lineage, yeah, probably started with Algol though? Fast I guess is always nice, but I'm not sure that's enough to keep it alive solely for that, at least to me.
- I think the best answer you're really going to get here is that it's cool and fun to learn and use old languages.
- I'd agree with all of those reasons! I do so myself as well, was just specifically curious about the "The world is better with a Fortran-based social network client in it" part. Don't get me wrong, I've spent too many nights learning "dead" languages too, but never with the idea that the world would be better if I published more code in these dead languages, it's just for my own gratification and learnings.
- I came here to suggest COBOL as a better fit, then saw your comment a few levels up in this thread.
Out of curiosity, does your implementation use CODASYL?
(For people that don't pay much attention to historical software systems, most CODASYL implementations were similar to JSON document databases, so going that way isn't as crazy as it sounds.)
- Great comment! Thanks!
No CODASYL, the JSON parser is hand-rolled Fortran with a depth-tracking key scanner
CODASYL not a crazy direction for the feed composer
Got more depth to explore here, still early :)
- How do COBOL and Fortran compare for something like this ?
- COBOL is more painful, Fortran better.
Good you raised the topic, can write a blog post on it when we ship Cobolsky. Will be a proof of concept repo. Fortransky is the one
(If AT Proto did fixed-width records instead of JSON, COBOL would be formidable)
- Which version of the language is it? It looks like you used Fortran90 at least (modules are used), which is pretty old, but not totally ancient like Fortran77.
Anyway there are also 2018 and 2023 versions…
- Thank you for choosing Fortran. Seriously, I mean it.
Someone else already said this, but it is awesome because it proves that you can write useful software using languages others consider ancient or dead and therefore "unusable".
Keep up the great work!
- > why fortran?
why not? the language is straightforward and loops are fast. It is portable and your code will work unchanged for the next 50 years. It may be a bit verbose, but that's not a big deal with today's tooling.
- Fortran will survive the cockroaches even, when the world 404s
- Yea na, Fortran is pretty compiler dependent and there are a lot of compilers. Already old Fortran code used all sorts of now-dead proprietary compilers and can take a huge effort to get it to compile on modern compilers or even modern computers. Modern code might use Gfortran which sometimes makes breaking changes so that's not an option. Perhaps if everyone uses the latest shiny new Flang or whatever, then it'll finally last 50 years? Not likely, given the history.
- Your code will work unchanged until you try to change compilers or your compiler adopts a J3 breaking change to the language.
- > your compiler adopts a J3 breaking change to the language
Like all the 3 of them they added in the last 30 years, and that compiler vendors are not enforcing anyway because they don’t want to annoy their users?
Windows’ backward compatibility is a joke compared to Fortran.
- Great, can we see some benchmarks?
- Cobolsky holds the record for most surprised looks per line of code :)
Fortransky benchmarks pending
the feed scorer will have real numbers worth reporting
Whenever time allows in future: Fortran vs Go vs Python
- maybe they weren't really concerned about portability or a decent standard?
- It’s keyboard navigation only, and we got the Bluesky firehose raw straight into the Rust decoder. Or we switch mode to Jetstream with m+EnTER :)
You hit l+ENTER to like a post. If anyone replies from Bluesky, we hit n+ENTER and see the notifs. And so on
Fortransky is 70% Fortran, rest is Rust, C and a tiny Python helper
- Brilliant in every possible way. Fortran was first language I learnt at high school in its "PORTRAN" variant.
- :) We tried Abacus Fortran on the C64 back in the days and were allowed to stay indoors during breaks doing Basic stuff too on school computer.
One of the guys wrote 8xxROM some 10 years later.
Today known as U−Boot :)
- Forecast: Fortransky on Tangled tomorrow Sunday
- Are there any other AT protocol apps that aren’t derivatives of bluesky? By that I mean, not social media feed related, twitter clone.
- Yep lots! Mine is a livestreaming service: https://stream.place
Also a great blogging platform: https://leaflet.pub
Here's a goal tracker: https://goals.garden
This one just dropped recently; it's 44 different atproto-related apps with a cyberpunk theme: https://www.aetheros.computer/
Lots others mentioned here: https://blueskydirectory.com/
- AT conference in a couple of days. In Vancouver. Bet they are all there and the rest of the AT bunch.
- Don’t know if people are building GitHub-like systems, offline-first app sync etc
Many devs reuse schema and write some twitter/bsky clone
Kind of search engine for my Blueaky likes
Gotta get off the timeline, germ has a messaging app, then there is Tangled and some more
We do Fortransky and Cobolsky now, got more ideas for the protocol than time :)
- https://tangled.org/ <--- GitHub on ATProto
that's all I'm aware of
(edit) Oops, just saw that you mentioned it, confused by your first line then. Tangled is awesome!
- i am currently working on a dropbox alternative: https://dropb.at
- Cool!
- There seems to be a bunch of Rust in there too?
- It’s early version yes. It’s 70% Fortran, next version more Fortran and we will add x86-64 assembly decoder for AT Proto firehose frames
- It's always nice to see production codebases in languages that you've never used but are interested in.
Tangential, but to the author, are there any FORTRAN codebases you feel are well designed?
- Good reminder to dig around. Will check. We picked up the Fortran manual and just went for it.
The original Manual exists as a PDF. Was it in a Stuttgart uni URL? Just a search away.
Late in Sweden, gotta Fortran tomorrow. Happy to continue discussion here tomorrow.
- 'written in Fortran'.
Interesting choice. Why?
- Whenever I hear about this AT protocol I think about the text-based commands to control cellular modems. I can't be the only one, r-right guise... r-right?
- Finally! Some relevant news here. I wondered where all the other Fortran people were hiding. I thought I knew all the other BlueSky Fortraners.
- y'all gotta throw this up on https://tangled.org ;)
- On it!
- The world is a better place for this app. Wonderful!
- :) I mean there are still some people alive out there who never saw a web UI when beginning dev. They get a bit nostalgic, missing their 286
It’s fun and it is appreciated by them, and the young ones who are curious
- thats COBOL :)
- Oh this is cool
- fortran > cobol
- fortran .GT. cobol
- > forever
- On ATProto: it’s funny how we never learn the lesson:
- VCs band together to fund something shiny.
- Devs love shiny, helping spread the something.
- VCs enschitify it to get their coins back.
- VC is Fortransky no-go zone
- [dead]
- [dead]
- [flagged]
- Why not Rust ?
- From my experience building browser automation tools, the biggest challenge with most Chromium-based solutions is that their TLS fingerprint is a dead giveaway. Firefox-based approaches tend to fare much better against JA3/JA4 fingerprinting.
The key insight is moving fingerprint spoofing from the JS level (which is itself detectable) down to the native C++ level. It's a fundamentally different approach.
- Multiple tabs open? :)
- Just spam.
129 points by FormerLabFred 22 hours ago | 77 comments