Pinned toot
Joe  

How to have doas insult you (with insults straight from deraadt@):

jo.ie/doas-insults.html

1+
Pinned toot
Joe  

Success! After wrangling with radeondrm/EFI issues, I finally managed to get 6.3 running on my old iMac with multiple monitors fully supported (thanks to some manual modeline work with cvt and xrandr)

0
Pinned toot
Joe  

Update/expansion of my intro last year. I'm now going into fourth year maths rather than theoretical physics, having switched degrees. (That's assuming I pass some exams this week that I deferred due to illness).

I brew beer as a hobby, and code when I have spare time. I enjoy writing science fiction, but I'm a long way away from publishing anything.

I have 111 characters spare so: My favourite equation is \(\int_M \mathrm{d}\omega = \int_{\partial M}\omega\)

0
Joe boosted
Joe  

I have access to a laser engraver this weekend.

0
Joe  

I have access to a laser engraver this weekend.

0
Joe boosted
prx  

Work to unveil #firefox under #openbsd Yay !

marc.info/?l=openbsd-ports&m=1

0
Joe boosted
VCF Berlin  

Sucht ihr nach einem neuen Bastelprojekt? Wie wäre es mit dem TTL-Mikrocomputer @gigatronTTL, präsentiert von Marcel van Kervinck auf dem VCFB 2019? vcfb.de/2019/ausstellungen.htm Alles zum Gigatron findet ihr hier: gigatron.io/

0
Joe boosted
Bryan Steele :flan_beard:  

Be sure to test this! jcs@ has done the seemingly impossible, in addition to further refining the pledges for Firefox, and adding new pledges for the GPU process, he's also done the heavy lifting to add unveil(2) support! Reducing the very broad {r,w,c}path filesystem access.

#OpenBSD

RT @jcs@twitter.com I've been working on enhancing the security of OpenBSD's Firefox port over the past couple weeks and would like some wider testing jcs.org/patches/ff-port-unveil

1+
Joe boosted
Chris Purcell  

Google kind of sucks. I am curious about how close to the speed of light we can get (in a spaceship for instance). We're not even close to 0.01c as things stand, but I have many questions: are there engineering reasons to believe we will/won't get to p*c for any p? What tech is being proposed/ruled out etc. no matter what I search, google shows me things like "why can't we/what would happen if we go faster than light?" and all sorts of intro stuff that I already know.

1+
Joe  

based laser at my workplace

0
Joe boosted
PINE64  

Wow, we did not expect the level of interest you all have had in the #PineTime!

More info:
- Cost will be approximately 25USD
- Charging dock included in price
- Built-in heartbeat monitor
- Case built of Zinc alloy and plastic
- Battery life measured in days
- Sorry, can't run Linux itself. SoC is nRF52832, which uses a Cortex-M4 core. That's why we need FreeRTOS :)

1+
Joe boosted
PINE64  

This is the PineTime. A companion for your Linux smartphone, and new side-project of ours. More news coming in the future...

(If you have experience with FreeRTOS or mbed, and are interested, please get in touch!)

1+
Joe  

Ugh. Library online fee payment system works in but not .

0
Joe boosted
raichoo  

Hey Fediverse! What's your favorite #BSD? (I only have 4 options here so I picked the most popular ones :/) #FreeBSD #OpenBSD #NetBSD #DragonflyBSD #Unix

145 votes · Sep 18, 2019, 12:05
1+
Joe  

Dosmaoinimh!

1
Joe  

appears to be down

1
Joe boosted
Stefan Sperling  

Please stop reporting bugs against #OpenBSD 6.6-beta (GENERIC.MP) kernel #262

kernel #262 breaks your wifi :flan_aw:​

kernel #262 breaks your USB :flan_awe:​

kernel #262 breaks your ACPI :flan_heckk:

kernel #262 panics in unpredictable ways :flan_blender:​

:flan_sign:​​ Do Not Run Kernel #262 :flan_sign:​

1+
Joe boosted
Joe  

Given \(M, N\), matrices, let
\[m_{ij} = \lfloor \log_2 M_{ij} \rfloor \]
and similarly for \(n\). Then \(M_{ij} \approx 2^{m_{ij}}\). Define \(m \star n\) by
\[(m \star n)_{ij} = \max_k (m_{ik} + n_{kj}), \]
This gives us an approximation \((M \cdot N)_{ij}\approx 2^{(m \star n)_{ij}}\)

Has anyone here encountered this before? It's essentially floating point matrix multiplication without the mantissa bits, but I'm wondering if there are any papers or resources dealing with it.

1
Joe  

I say "essentially", but I just mean "similar to"

0
Joe  

Given \(M, N\), matrices, let
\[m_{ij} = \lfloor \log_2 M_{ij} \rfloor \]
and similarly for \(n\). Then \(M_{ij} \approx 2^{m_{ij}}\). Define \(m \star n\) by
\[(m \star n)_{ij} = \max_k (m_{ik} + n_{kj}), \]
This gives us an approximation \((M \cdot N)_{ij}\approx 2^{(m \star n)_{ij}}\)

Has anyone here encountered this before? It's essentially floating point matrix multiplication without the mantissa bits, but I'm wondering if there are any papers or resources dealing with it.

1
Joe  

4 years of commuting in and out of university, and *now* the bus gets working air conditioning

0
Joe boosted
SDF.ORG  

after 4.69 years of uptime and over 16 years of continuous service our very last 64 bit DEC Alpha retired itself early this morning. @netbsd #bsd #rip #thankyou #goodbye

1+
Joe boosted
David Chartier  

“Sorry, your browser isn’t supported. Trying using a browser from the company that is eating the internet.”

Mmmmmm try fucking off.

1+
Show more
Mathstodon

A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.

Use \( and \) for inline LaTeX, and \[ and \] for display mode.

Resources

Developers

What is Mastodon?

mathstodon.xyz

More…