Alex Balfanz

5K posts

Alex Balfanz banner
Alex Balfanz

Alex Balfanz

@badccvoid

@fab2, co-founder @badimo, programming Jailbreak on @Roblox, prev autopilot intern @Tesla, Duke University.

building Katılım Mart 2010
489 Takip Edilen293.3K Takipçiler
Jim Keller
Jim Keller@jimkxa·
.@Fab2 fabs fabs, fabs printers prints masks, prints chips makes everything Atomic Semi is now @fab2 fab2.com
English
19
26
357
34K
Roblox
Roblox@Roblox·
Meet @NosniyRBLX, the dev behind the success of RIVALS.
English
538
176
2.6K
322.8K
Fab2
Fab2@fab2·
We do demos every week at Atomic Semi, we’ll start show you some on here too
Fab2 tweet media
English
10
2
177
27.5K
Alex Balfanz
Alex Balfanz@badccvoid·
@tobi lots of great UIs have been made for profilers (Tracy, Firefox Profiler, Instruments, etc.) ... and now all we want is raw data. CLI for probing and querying perf. Bring back the ASCII!
English
0
0
11
2.9K
tobi lutke
tobi lutke@tobi·
Autoresearch works even better for optimizing any piece of software. make an auto folder, add program.md and bench script, make a branch and let it rip.
English
70
64
1.7K
123.3K
Jovanni "ContextLost" Cutigni
Jovanni "ContextLost" Cutigni@ContextLostRBX·
Last week at Roblox. Time for something different. Just don't know what yet.
English
8
0
108
8.9K
Andrej Karpathy
Andrej Karpathy@karpathy·
ah yes, this is what post-agi feels like :) i didn't touch anything. brb sauna
Andrej Karpathy tweet media
English
73
59
1K
189.9K
Andrej Karpathy
Andrej Karpathy@karpathy·
nanochat now trains GPT-2 capability model in just 2 hours on a single 8XH100 node (down from ~3 hours 1 month ago). Getting a lot closer to ~interactive! A bunch of tuning and features (fp8) went in but the biggest difference was a switch of the dataset from FineWeb-edu to NVIDIA ClimbMix (nice work NVIDIA!). I had tried Olmo, FineWeb, DCLM which all led to regressions, ClimbMix worked really well out of the box (to the point that I am slightly suspicious about about goodharting, though reading the paper it seems ~ok). In other news, after trying a few approaches for how to set things up, I now have AI Agents iterating on nanochat automatically, so I'll just leave this running for a while, go relax a bit and enjoy the feeling of post-agi :). Visualized here as an example: 110 changes made over the last ~12 hours, bringing the validation loss so far from 0.862415 down to 0.858039 for a d12 model, at no cost to wall clock time. The agent works on a feature branch, tries out ideas, merges them when they work and iterates. Amusingly, over the last ~2 weeks I almost feel like I've iterated more on the "meta-setup" where I optimize and tune the agent flows even more than the nanochat repo directly.
Andrej Karpathy tweet media
English
330
553
6.5K
647.1K
Alex Balfanz
Alex Balfanz@badccvoid·
Advice is most trustworthy when it goes against the advisor’s incentives
English
19
6
167
20.1K
JMCgaming24
JMCgaming24@JMCgaming24·
"The day was January 6th, 2017. A normal day for most, but a very monumental day for 2 very important Roblox developers." Happy 9 year anniversary to the creation of Roblox Jailbreak! 1 more year till 10 years, I wonder what will happen? 👀
JMCgaming24 tweet media
English
9
14
147
7.6K
Alex Balfanz
Alex Balfanz@badccvoid·
@FireAtacck Love this video! congrats on making a great piece of art :)
English
0
0
15
733
FireAtacck
FireAtacck@FireAtacck·
Yoo, thanks to everyone who watched my recent video and supported the channel, it was much more attention than what we initially hoped for. 🔥 We’re getting pretty close for The Forge’s release. 24 hours public test gonna be announced soon in our discord server. Discord.gg/theforgers #roblox #robloxdev #theforge
English
4
1
62
15.3K
Alex Boniske
Alex Boniske@AlexBoniske·
Lessons learned designing+building a (mostly) printed jet engine from scratch: - SLM metal prints require substantial post processing to achieve anything close to traditionally machined ones - Low-cost turbine balancing methods are very primitive - 🧵…
Alex Boniske@AlexBoniske

Tentative next steps for early 2026 if we continue: remachine the backup impeller for less pressure leakage,re-test, then build a turbine-burst capable test rig and attempt a run on kerosene

English
4
0
25
2.9K
BreakingTaps
BreakingTaps@BreakingTaps·
Starting to look like a real chip! Need to pack more logic cells in all that empty space, and then fix some timing issues (which might entail re-arranging the SRAM blocks). But pretty happy so far!
BreakingTaps tweet media
English
8
1
125
5.6K
Epic_Tank
Epic_Tank@REAL_EpicTank·
I just completely gutted the Jailbreak Jewelry Store robbery code and recoded it from the ground up for its revamp. It's super cool! And... check out ziplines in Jailbreak!
English
109
87
1.4K
102.6K
Max ¯\_(ツ)_/¯
Max ¯\_(ツ)_/¯@MaximumADHD·
Spotted at a random Salvation Army thrift store in northern Illinois
Max ¯\_(ツ)_/¯ tweet media
English
18
18
690
20.5K