Anastasi in Tech
@AnastasiInTech
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Tech Entrepreneur | Host of Anastasi In Tech
Joined April 2021
You have to be irrationally obsessed with something
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Check out the new episode on physics-based computing:
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In the new episode I'm breaking down the engineering behind Colossus 2 - the world's largest AI data center:
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⁉️Why it didn’t work out Building a datacenter-class AI supercomputer from scratch is one of the most capital- and talent-intensive bets in tech. The engineers capable of pulling this off are rare — and easily poached.
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💡Dojo’s Story Announced at AI Day in 2021, entered production in 2023. Over ~4 years, Tesla poured several billion dollars into it. They did some impressive stuff along the way. Most notably — innovating in packaging, cooling and SW.
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It was a genuine moonshot — and not all moonshots work. But I really admire Tesla for taking it on. I think they underestimated just how complex it is to build a supercomputer from scratch.
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New episode is just dropped - don't miss this one😎
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What important truth do very few people agree with you on?
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7. This shift won’t happen overnight — but the direction is clear. Follow @AnastasiInTech for more
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6. Companies to watch: 🔹 Startups: Lightmatter, Ayar Labs, Q.ANT, LightIntelligence, Black Semiconductor 🔹 Public: Broadcom, Marvell, Lumentum (part of NVIDIA's photonics push), Cisco, POET Technologies
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5. Add a DAC — and now the same device can perform analog multiplication — multiplying input light with an analog weight. That’s the basis of matrix multiply–accumulate (MAC), the core operation behind many AI workloads.
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4. How photonics works — in a nutshell: At the heart of it is an optical modulator, like a Mach–Zehnder Interferometer (MZI). It encodes digital data (1s and 0s) into the intensity of light.
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3. And here’s the bottleneck: Traditional copper interconnects are reaching their physical limits in: ❌ Bandwidth ❌ Energy efficiency ❌ Physical reach That’s where photonic interconnects come in.
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2. To keep up, modern AI workloads now need entire data centers to function like one giant GPU. But that puts enormous strain on one thing most people overlook: The interconnect.
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1. Each new generation of LLMs demands significantly more compute. → AI compute demand is growing by 4.6× per year → Hardware performance improves by just 1.3× per year This mismatch creates huge pressure on infrastructure.
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🚨The biggest transition happening in next-gen computing right now. A quick thread from my recent keynote — on why photonics is rising and the top companies to watch in this space:
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New episode on the channel - very proud of this one 😎
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Hi friends! Super excited to be attending NVIDIA #GTC25 in person this year. 🚀 Don’t miss out—register now for the free virtual event using this link https://t.co/YEQjMpBbsG and get a chance to win NVIDIA RTX 6000 Ada GPU. #GTC2025, #NVIDIA #AI, #JensenHuang, #GTC25
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