Willie SONG
4 posts


15-18x faster than NVIDIA GPU clusters. OpenAI is a customer.
Cerebras CEO @andrewdfeldman on @theallinpod: the gap is not software optimization. It's physics.
NVIDIA GPUs move data from off-chip memory (HBM) to compute units - that trip is the bottleneck. Cerebras built a wafer-scale chip the size of a dinner plate with on-chip memory adjacent to compute. No off-chip trip. 15-18x faster on AI inference workloads.
At $50-60B market cap, you're betting that speed advantage holds as NVIDIA iterates its architecture. If you hold $NVDA, this is the primary new threat to benchmark against next quarter.
Speed advantage vs software moat - the full breakdown: podcastalpha.substack.com/p/all-in-liqui…
Source: All-In Podcast - youtube.com/watch?v=jLICvW…

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When I finished college, my ambition was not to build the world’s fastest chip company.
I wanted to become a professor of development economics.
I went to work in Pakistan.
The Northwest Frontier Province is about as far from Silicon Valley as you can get.
After I came back, I started a PhD program and finished my classes and qualification exams.
Then I got bored.
I thought I'd add an MBA and end up teaching at a business school.
My housemate Jim was joining a tiny startup.
They asked me to join, twice.
I said no. I had no interest in data networking.
I thought it was plumbing.
Eventually I caved and wrote their business plan.
Then I joined them. And it turned out to be an extraordinary team and a phenomenal industry.
We built chips and systems for switching and routing. We played a small role in changing the world.
We sold the company less than a year later for $280M, when that was a lot of money.
8 of those guys are still with me, more than 25 years later, at @cerebras today.
I call it the myth of LinkedIn - this idea that we all had our careers mapped from the time we left high school.
Mine wasn't a straight path.
It was a series of accidents where I fell into things I enjoyed.
Where I was curious, met people whom I liked, and learned from.
If you're 18 and someone asks you to pick a narrow lane - don't.
Go to university.
Learn how to think.
Be as broad as you can.
Follow your curiosity. Explore.
The journey will take you to amazing places.

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