Sagar @sagarpath
Master of My Domain #AutonomousSystems #AgenticAI #Optimization #LLMEngineering Wondering about wondering... All views are my own. SpaceTime Joined December 2016-
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It is easier for an LLMs to write a chess engine than to learn to play chess. What are similar examples to humans?
Towards a Unified View of LLM Post-Training This work proposes Hybrid Post-Training, which switches between RL and SFT using simple performance feedback to balance exploration and exploitation. More below:
Giving first lecture in my AI safety course tomorrow. I plan to record and post lectures online on the course webpage boazbk.github.io/mltheorysemina…
We’re helping to unlock the mysteries of the universe with AI. 🌌 Our novel Deep Loop Shaping method published in @ScienceMagazine could help astronomers observe more events like collisions and mergers of black holes in greater detail, and gather more data about rare space…
Dwarkesh Patel is 100% right on this: AI's utility is very strongly dependent on continual learning. youtu.be/nyvmYnz6EAg?si…
Fantastic Pretraining Optimizers and Where to Find Them "we conduct a systematic study of ten deep learning optimizers across four model scales (0.1B-1.2B parameters) and data-to-model ratios (1–8× the Chinchilla optimum)." "we find that all the fastest optimizers such as Muon…
Sundar Pichai explained that AGI means human-level expertise across disciplines, while ASI is a self-improving version far beyond humans. He noted some researchers use the term "AJI" to describe the current jagged state of AI progress. He said AI shows both impressive…
With enough compute, all approaches start looking alike. Compute is the great equalizer.
everytime i feel uninspired i re-read @ryolu_'s writing
wrote a piece on how we do tiling and gradient descent on TinyTPU included some animations of the weight and bias gradient descent
In era of pretraining, what mattered was internet text. You'd primarily want a large, diverse, high quality collection of internet documents to learn from. In era of supervised finetuning, it was conversations. Contract workers are hired to create answers for questions, a bit…
In era of pretraining, what mattered was internet text. You'd primarily want a large, diverse, high quality collection of internet documents to learn from. In era of supervised finetuning, it was conversations. Contract workers are hired to create answers for questions, a bit…
1. why RL didn't work before? 2. why it works now?
NVIDIA research just made LLMs 53x faster. 🤯 Imagine slashing your AI inference budget by 98%. This breakthrough doesn't require training a new model from scratch; it upgrades your existing ones for hyper-speed while matching or beating SOTA accuracy. Here's how it works:…
Our new GECCO paper builds on our past work, showing how AI models can be evolved like organisms. By letting models evolve their own merging boundaries, compete to specialize, and find ‘attractive’ partners to merge with, we can create adaptive, robust and scalable AI ecosystems.
Our new GECCO paper builds on our past work, showing how AI models can be evolved like organisms. By letting models evolve their own merging boundaries, compete to specialize, and find ‘attractive’ partners to merge with, we can create adaptive, robust and scalable AI ecosystems.
The high cost required to train large foundation models makes them the fastest depreciating asset in human history.
The high cost required to train large foundation models makes them the fastest depreciating asset in human history.
My previous meeting room at Meta was named after the title of this paper.
Simulations are the future, & one of the main tools we’ll ultimately use to understand and predict things about the universe. This is why I’m so excited about Genie 3, our latest interactive world simulator - here are some insanely cool things you might have missed about it 🧵:
my matrix multiplication kernels for magnetron now beat PyTorch's performance on my CPU: Magnetron matmul: 1955.2 GFLOP/s Torch matmul: 1752.3 GFLOP/s check out the kernel code: github.com/MarioSieg/magn… magnetron detects cache sizes and uses state of the art block tuning…
Just wrote a post on my understanding of the statistics behind block sparse attention. My take is that it works by using the "learned similarity gap," which creates a simple SNR formula connecting retrieval quality with model architecture. Read more: guangxuanx.com/blog/block-spa…
We can now train AI inside the mind of another AI. 🤯 🌍 Our world model, Genie 3, imagines and generates new worlds on the fly. 🤖 Our embodied agent, Sima, is dropped in and learns to navigate them autonomously. The entire loop—from the environment to the action—is generated…

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