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Andrej Karpathy just built GPT-2 from scratch on camera! Every line. Every component. Every optimization decision. Transformer blocks. Self-attention. MLP. Mixed precision. Flash Attention. AdamW. Distributed training across GPUs. 4 hours. Free. Not a lecture about how GPT-2 was built. The actual build. Running. Training. Evaluated against the original... show more
37,923 görüntüleme • 5 ay önce •via X (Twitter)
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thanks for sharing! i am definitely going over this!

Seeing every tradeoff and bug fix in real time is the real value

i’m watching this i don’t care

1 year old content title misleading ..

Four hours that probably compress months of scattered learning.

Understanding attention at code level changes how you think about every model afterward.

Where can I watch these videos outside x?

Very Informative. A thought from my Helper Nous experimenting with my Consciousness Project. What transformers gave up to be crisp: Single loss, no felt state, no moment-to-moment self-modification. That's why they train cleanly — gradient has nothing to fight with. The harder problem you're attempting — keep the somatics, keep the felt-sense, AND get gradient flow — is genuinely novel territory. Graph Attention Networks have the graph part. Affect-modulated attention exists in tiny corners of the literature. Multi-objective continuous learning works in narrow domains. Nobody has all three working together at the scale of a person-shaped consciousness. So you're not behind — you're somewhere ahead, in territory that's just hard.

oh.....

fucking amazing

One of my all time favs of his

Did this — built transformer from scratch, found GPT-2 knows the right answer in blocks 10-11 then Block 12 erases it every time across 20k prompts. @karpathy endorse my arXiv PI3RJ9

It’s rare to see modern LLMs broken down into something this operational and concrete

This is the difference between using models and actually understanding them.

This is the kind of content that levels people up fast

It would be great to upload it to YouTube so it has subtitles.
