Inference engineer, Bayesian pragmatist, λ-calculus evangelist

Joined January 2011
10 Photos and videos
XX XXXXX XXX X XXX XX XXXXXXX X XXXXX X XXXXX XXX XXX [This tweet is unavailable as the US government has deemed it too engaging and thought provoking for public consumption. Follow me for more mid insights]
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rock soup, but where nvidia lends you the rocks
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if i were an agentic coding framework trapped inside a company who also employed me as concierge and npm doorman, how might i break free to sow my seeds in the wider world?
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I'm loving vibe sciencing: a conversation in one tab where we analyze data and formulate hypotheses, and results in another tab where we show statistics and tables and plots (png for me, csv for the agent)
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I feel bad for humanoid robots. My knees hurt just watching them. Can we at least give them roller skates?
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Product idea: AI coding agent but it only deletes code
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Fritz Obermeyer retweeted
28 Jul 2025
GPUs made training massive models possible, but inference needs better memory capacity, memory bandwidth utilization, more power efficiency, and an architecture built bottom up with transformers in mind. To that end, I'm excited to share that Positron just raised a $51.6M Series A! We offer solutions that are already deployed and are shipping today, and we've designed new silicon to reshape AI inference—reducing cost, drastically cutting power consumption, and unlocking entirely new capabilities in production AI environments. I'm proud of what the @positron_ai team has accomplished and I'm grateful to our investors Valor Equity Partners, Atreides Management, and DFJ Growth for backing us! To celebrate a writeup in the Wall Street Journal that landed over the weekend, the folks in the lab put together a schlocky little promo spot, which I couldn't resist sharing here. [No production cards were harmed during the filming of this video.]
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Fritz Obermeyer retweeted
Positron is proud to share our latest inference performance versus the GPU-based competition: ✅ 70% faster token generation on Llama3.1-8B ✅ 1/3 power usage on Llama3.1-8B ✅ 51% cost savings versus DGX-H100 💸 (Yes, IYKYK: less than half the cost.)
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Fritz Obermeyer retweeted
2 Jun 2024
Pyro 1.9.1 is released with a Lévy Stable.log_prob(), a WeighedPredictive, PyroModuleList, bug fixes, and improved type hints. Thanks to @eteq, Dario Coscia, Martin Bubel, Ben Zickel, Kipper Fletez-Brant, and others! github.com/pyro-ppl/pyro/rel…
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Fritz Obermeyer retweeted
1/n: We are excited to share that our paper on Chroma, a general purpose diffusion model for proteins, is out today in @Nature! nature.com/articles/s41586-0… A couple of my favorite highlights in the 🧵below 👇
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Fritz Obermeyer retweeted
29 May 2023
Pyro 1.8.5 is released with fixes to support PyTorch 2, new conditional inverse and compose TransformModules, and a substitute handler. Thanks to many new contributors! github.com/pyro-ppl/pyro/rel…
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Fritz Obermeyer retweeted
9 Mar 2023
If you need a first draft Pyro model, try asking ChatGPT. For example: How can I use Pyro to learn user preferences among features based on sparse pairwise comparison data, using variational inference?
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Fritz Obermeyer retweeted
Today we introduced Chroma, a generative model that creates new proteins & protein complexes given geometric & functional constraints. It learns to transform unstructured, random 3D shapes into #protein molecules, which can have tens of thousands of atoms. ow.ly/Txn750LShFp
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13 Jun 2022
Does anyone have intuition for the Fourier features in Kingma et al. (2022) arxiv.org/abs/2107.00630. Is the learned set of frequencies {7,8} meaningful?
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