cipherself
Joined 3 years ago
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181
Submissions
51
Member since
Jun 3
https://mohamed.computer/
https://synmach.com/
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Comment · 4 months ago
The article’s distinction about memory is a bit too simplified. Virtual memory is address space mapped or reserved by the process. RSS is resident physical pages, not necessarily “actively used.”. RSS also overcounts shared memory, which is why PSS/USS matter.
Comment · 5 months ago
For anyone else who's suffering, paste this in the console in devtools:
document.getElementsByTagName('main')[0].style.margin = '0 auto';Comment · 9 months ago
It's quite exciting how far we've come from the modern exposition of world models by David Ha and Jürgen Schmidhuber in 2018 https://worldmodels.github.io/
Comment · 9 months ago
Here's a Dockerfile that will spin up postgres with pgvector and paradedb https://gist.github.com/cipherself/5260fea1e2631e9630081fb7d...
You can use pgvector for the vector lookup and paradedb for bm25.
Comment · 9 months ago
Comment · 9 months ago
I am trying to get the TLA+ tools to run completely in the browser https://github.com/tlaplus/tlaplus/tree/master/tlatools
Comment · 10 months ago
I don't think this is bad, if you know Python then most of the code will be fine for you. I think you're probably referring to pm_reduce_collapse, but while it looks daunting at first, it really isn't when you consider the alternatives, I'd be curious on how you'd improve it short of creating a DSL.
Comment · 10 months ago
I have written parsers using parser combinators in Haskell and Clojure. I find that ML-like (Haskell, OCaml, StandardML) languages generally are great at writing parsers, even hand-written ones in it is a superior experience.
In this case, this was a project at $EMPLOYER in an existing codebase with colleagues who have never seen Haskell code, using Haskell would've been a major error in judgement.
Comment · 10 months ago
One anecdote in the same vein, a couple of months ago, I wanted to parse systemd-networkd INI files in Python and the python built-in ConfigParser [0] and pytest's iniconfig parser [1] couldn't handle multiple sections with the same name so I ended up writing 2 parsers, one using a ParserCombinator library and one by hand and ended up using the latter given it was much simpler to understand and I didn't have to introduce an extra dependency.
Admittedly, INI is quite a simple format, hence I mention this as an anecdote.
Comment · 10 months ago
I have used systemd services before to do this to run an application, I had a user created specifically for the application, and I defined the capabilities the application needed via CapabilityBoundingSet and AmbientCapabilities [0] and I used a lot of stuff from [1] to restrict the application e.g. the sandboxing facilities, restricting the allowed syscalls [2], ...etc. systemd also comes with a useful command systemd analyze security [3]
[0] https://www.freedesktop.org/software/systemd/man/latest/syst...
[1] https://www.freedesktop.org/software/systemd/man/latest/syst...
[2] https://www.freedesktop.org/software/systemd/man/latest/syst...
[3] https://www.freedesktop.org/software/systemd/man/latest/syst...
Comment · 11 months ago
That was a great book, I wonder what the 2025 equivalent of it is...
Comment · 11 months ago
12 (13?) years ago I had also written a Naïve Bayes classifier in Perl https://github.com/cipherself/NaiveBayes_perl
IIRC, next thing on my TODO list was to add vectorization. Also (like OP) it uses log probabilities to avoid floating-point underflow.
Comment · 11 months ago
10 years ago I've implemented SCAMP (a gossip protocol) in Clojure, you might find it interesting, the implementation is quite small https://github.com/cipherself/gossip
Comment · 1 year ago
> I recommend using the `dir` function in a REPL
A while back I wrote this https://mohamed.computer/posts/python-internals-cpython-byte..., perhaps it's interesting for people who use `dir` and wonder what some of the weird things that show up are.