Joined March 2007
93 Photos and videos
Jason Vallery retweeted
Apr 21
“VAST Key Moments” series: theCUBE's @RealStrech speaks with @VAST_Data’s @jvallery & Jonsi Stefansson about how #datagravity & #distributedinfrastructure is forcing #data to move to where #AIinference runs. 📺 Get more insights! youtu.be/VLePy4hUpoU #Compute #TechNews
1
3
334
1/ I need to talk about what's actually happening right now. Not hype. Not vibes. Karpathy just open-sourced a project where an AI agent runs its own ML experiments in a loop. Modifies code, trains, evaluates, keeps what works, discards what doesn't. No human involved. Read that again.
I packaged up the "autoresearch" project into a new self-contained minimal repo if people would like to play over the weekend. It's basically nanochat LLM training core stripped down to a single-GPU, one file version of ~630 lines of code, then: - the human iterates on the prompt (.md) - the AI agent iterates on the training code (.py) The goal is to engineer your agents to make the fastest research progress indefinitely and without any of your own involvement. In the image, every dot is a complete LLM training run that lasts exactly 5 minutes. The agent works in an autonomous loop on a git feature branch and accumulates git commits to the training script as it finds better settings (of lower validation loss by the end) of the neural network architecture, the optimizer, all the hyperparameters, etc. You can imagine comparing the research progress of different prompts, different agents, etc. github.com/karpathy/autorese… Part code, part sci-fi, and a pinch of psychosis :)
1
1
152
4/ These three things feed each other. Better AI -> more people use it -> richer training data -> better AI -> better AI research -> new algorithms -> even better AI. This isn't a slide deck. This loop is running right now. Karpathy went from 80% hand-coding to 80% AI-coding in ONE MONTH.
1
42
5/ And Karpathy's little weekend repo? It's a toy version of what's happening inside these labs at massive scale. AI agents running experiments on AI training. Finding improvements. Applying them. Looping. 24/7. On hardware we couldn't have imagined 2 years ago. Sit with that for a second.
37
Jason Vallery retweeted

6,594
28,085
118,804
87,198,124
Jason Vallery retweeted
Claude Code this week has awakened my 25 year old self: the one that chugged red bulls and stayed up til dawn coding. WE ARE SO BACK
389
375
8,910
490,757
22 Dec 2025
My ChatGPT year end stats. Crazy how much value I got out of AI this year. I also consumed quite a bit of Gemini and Grok.
89
I shared my personal perspective on how AI will shape our society local communities in a talk at the Longmont Museum. Not a professional talk, just a community conversation. 🎥 Watch: youtube.com/watch?v=XRYYce8P…
2
91
Jason Vallery retweeted
6 Nov 2025
We’re proud to expand our long-standing partnership with @VAST_Data with a $1.17B commercial agreement today. Combining Vast's industry-leading data platform and CoreWeave's purpose-built AI infrastructure, we will push the boundaries of artificial intelligence together. reuters.com/technology/nvidi…
4
13
75
5,795
Jason Vallery retweeted
I'm going to paraphrase @VAST_Data's CEO Renen Hallak on this one: "As we build our company, we aspire to the example set by great companies built before us. We try to follow their path, from one milestone to the next. From selling $1M, to $10M, to $100M, to $1B. From burning cash, to breaking even, to profitability. Each milestone is an additional step toward VAST Data being one of the greats. And then, one day, we realize we have stumbled upon a milestone our predecessors have never reached. We realize that going forward, there is no precedence and there is no other choice but to forge our own path." Today's announcement with CoreWeave is testament to a vibrant partnership between two AI infrastructure pioneers, and a signal to the world that the tomorrow's intelligence will not come from yesterday's technology. We are honored to work with their team, and humbly accept the challenge to help CW soar to even greater heights. reuters.com/technology/nvidi…
1
7
18
2,251
Jason Vallery retweeted
It's not about GPUs anymore; it's all about POWER. A comment from a $GOOGL employee working on datacenters: Getting GPUs and TPUs is not a bottleneck. "Power, lack of available power, reliable power has become the biggest bottleneck for us." on @AlphaSenseInc
194
383
2,709
822,080
Jason Vallery retweeted
Fairwater is pioneering the future of AI. As one of the world’s most advanced AI Factories, it runs hundreds of thousands of NVIDIA GB200 NVL72 racks with NVIDIA Spectrum-X as a single, massive cluster—engineered to tackle the most demanding AI workloads efficiently, at unmatched scale. Learn more about this groundbreaking news from Microsoft.
If intelligence is the log of compute… it starts with a lot of compute! And that’s why we’re scaling our GPU fleet faster than anyone else. Just last year, we added over 2 gigawatts of new capacity – roughly the output of 2 nuclear power plants. And today we’re going further, announcing the world's most powerful AI datacenter, located in southeastern Wisconsin. Fairwater is a seamless cluster of hundreds of thousands of NVIDIA GB200s, connected by enough fiber to circle the Earth 4.5 times. It will deliver 10x the performance of the world’s fastest supercomputer today, enabling AI training and inference workloads at a level never before seen. For AI training workloads, you need compute at exponential scale. That’s why we designed the datacenter, GPU fleet, and network together as one integrated system. This ensures a single job can run from day 1 at exponential scale across thousands of GPUs. Fairwater uses a liquid-cooled closed-loop system for cooling GPUs that requires zero water for operations after construction. And we’re matching all of the energy that is consumed with renewable sources. And of course, it is just one of several similar sites we’re lighting up across our 70 regions. We have multiple identical Fairwater datacenters under construction in other locations across the US, in addition to our AI infrastructure already deployed in over 100 datacenters around the world, powering model training, test-time compute, RL tuning, and real-time inference at global scale. Too often during times like this, people go with the current and only later wonder, how did we get here? With Fairwater, we're charting a new path: doing the hard engineering work, bringing compute, network, and storage into one highly scaled cluster, and designing closed-loop energy systems to meet real-world computing needs. And partnering with local communities to ensure it's thoughtfully done in a way that is sustainable, creates new jobs, and expands opportunity. We are thrilled to see this take hold in Wisconsin, and we are just getting started.
14
65
509
37,587
28 Jun 2025
Knocked out the full Middle St Vrain → Coney Flats loop—11 miles of rocks, plus that water crossing. Cybertruck did great!. Video ↓ @cybertruck
19
57
750
178,639
27 Jun 2025
Well… my @cybertruck finally met a rock it couldn’t beat 🤦‍♂️. Tire blew miles from pavement, no spare by design. My son & I got out in our Jeep, but the CT is still chilling at 10,200 ft. @Tesla can't get me a spare for two weeks. 
 (watch the blow‑out! We caught it on video) #Cybertruck #OFFROAD
8
4
32
1,286