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Tim Zaman Profile
Tim Zaman

@tim_zaman

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Frontier Clusters at OpenAI. Previously DeepMind, Tesla AP, X/Twitter (head of AI Infra), NVIDIA.

San Francisco, CA
Joined June 2010
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@tim_zaman
Tim Zaman
4 months
Personal news - I joined OpenAI! 🎉. We're going to build and launch the largest (and most delightful) supercomputers to power frontier AI research. DeepMind is obviously truly formidable and to the moon; and I had a great time - but I missed a smaller+tighter team I found in.
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@tim_zaman
Tim Zaman
2 days
This seasons models will make vibe coding roll over as the new default. Saw someone handcoding with pen and paper at blue bottle today. They know.
@karpathy
Andrej Karpathy
3 months
@tim_zaman @simonw haha nice i love that it just rolls the default over. "coding" basically assume AI assistance as the default coding now, legacy coding becomes "handcoding".
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@tim_zaman
Tim Zaman
7 days
When running your cluster in full-user-responsibility, one failure mode is a priority explosion, where everyone schedules hi pri. 5y ago before implementing hard rules (sad!), as a last ditch effort I introduced a rotating Trophy to shame the biggest offender. ofc didn't work.
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@tim_zaman
Tim Zaman
8 days
When I interviewed at NVIDIA in 2016, they put me in room "Led Zeppelin". That's when you know. Room next to it - Jethro Tull. love at first sight
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@crystalsssup
Crystal
9 days
Fun fact: our model is called Kimi, but our company is Moonshot — named after Pink Floyd's The Dark Side of the Moon. We're a team of scientists who love rock (Radiohead, Pink Floyd) and film (Tarantino, Kubrick). A big reason I joined was because the taste just felt right.
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@tim_zaman
Tim Zaman
2 months
The frontier clusters at OpenAI aren't just massive: every component and protocol is bleeding edge. Cluster management boils down to navigating complexity and discovering issues no one has ever seen before. We opened up a dedicated full stack position:
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openai.com
Frontiers Clusters · San Francisco · FullTime
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@tim_zaman
Tim Zaman
2 months
RT @sama: today we are introducing codex. it is a software engineering agent that runs in the cloud and does tasks for you, like writing a���.
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@tim_zaman
Tim Zaman
2 months
Which reminds me, In a former life I spent 2 weeks sitting in front of one -
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@tim_zaman
Tim Zaman
2 months
Rembrandt didn't paint by himself - as artists grew, they employed a workshop/studio style. Pupils did large parts of the work, signed by Rembrandt. Over time, this master-apprentice model sustains itself by the best apparentices graduating. And retirement by the old master.
@gdb
Greg Brockman
2 months
Just released Codex, a software engineering agent that can work on many tasks in parallel. It runs on its own cloud-based compute infrastructure, and can fix bugs, answer questions about your code, run tests, etc. Feels like a step towards the future of software engineering.
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@tim_zaman
Tim Zaman
3 months
RT @sama: if you are interested in infrastructure and very large-scale computing systems, the scale of what’s happening at openai right now….
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@tim_zaman
Tim Zaman
3 months
Great casual overview of the complexities in frontier training runs & frontier systems at OpenAI.
@sama
Sam Altman
3 months
@atootoon here is the full video:.
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@tim_zaman
Tim Zaman
4 months
Notes on homelab netboot node provisioning through diskless liveboot into ramfs: - finally found some time to jot it down.
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@tim_zaman
Tim Zaman
4 months
Hmmm 2 isn't very ambitious. DGX Spark is likely to support host chaining/`HOST_CHAINING_MODE=1` natively, hence the dual port:
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@ServeTheHome
STH
4 months
The NVIDIA DGX Spark supports 200GbE RDMA clustering of the GB10-based mini (~1.1L) systems with 128GB of LPDDR5X, 20 Arm cores, and a Blackwell GPU in each
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@tim_zaman
Tim Zaman
4 months
Google's OCS (2022): NVIDIA Silicon Photonics (2025):
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@tim_zaman
Tim Zaman
5 months
The backend i had incomprehensibly optimized, so i learned they had to rewrite it after I left. 😅.
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@tim_zaman
Tim Zaman
5 months
Fun patent i wrote the backend for. Multimodal semantic search through billions of frames. The search box is a formula that takes in text and images. You start with text "image of a bear". This would give frames closest to this query. You can then click on frames you (dis)like,.
@seti_park
SETI Park
5 months
Clip Search with Multimodal Queries. @Tesla's US20240419724A1 patent introduces a groundbreaking visual search system that revolutionizes how self-driving AI engineers find critical driving scenarios in massive video datasets. Imagine being able to simply type "car cutting off
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@tim_zaman
Tim Zaman
5 months
Almost forgot, had to learn to make pretty beefy printed circuit boards with a lot of RPI precursors.
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@tim_zaman
Tim Zaman
5 months
15 years ago i had a high altitude balloon project. Pointless, i didnt care about balloons; or high altitudes. My gains:.HAM callsign PD4TA, baudot, forward error correction, jpeg de/encoding, tedx talk, tv. Then someone called me 'the baloon guy' and i promptly quit it.
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@karpathy
Andrej Karpathy
5 months
Agency > Intelligence. I had this intuitively wrong for decades, I think due to a pervasive cultural veneration of intelligence, various entertainment/media, obsession with IQ etc. Agency is significantly more powerful and significantly more scarce. Are you hiring for agency? Are.
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@tim_zaman
Tim Zaman
5 months
Highly recommended book from co-inventor of the telephone. This is an engineer's adventure story:
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bookfusion.com
Author: Thomas A. Watson; Price: Free
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@tim_zaman
Tim Zaman
5 months
Don't get a PhD. What you really want, is an "angel". If you think this is hipster, this was also the environment in which the Telephone was invented, excerpt from 1903 book from Thomas A. Watson, where he describes how things went down in the workshop. Furthermore, there are
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@jxmnop
jxmo
5 months
number one reason to get a phd is because it's the only time in life you can think of something and go "hmm, that would be pretty cool" and then just spend several months *doing it*; oh and you will be joined by other people who think it's cool too and suggest ways for you to.
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@tim_zaman
Tim Zaman
6 months
RT @karpathy: I don't have too too much to add on top of this earlier post on V3 and I think it applies to R1 too (which is the more recent….
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