Tuesday, November 11, 2025

How Fortran Outperformed Our Billion-Dollar AI Chips | Dax | October 2025

Uncovering Surprising Performance in AI Programming

In a surprising revelation, we discovered that a 1970s Fortran loop outperformed our meticulously optimized CUDA kernels by 1.4×! What began as a light-hearted benchmarking exercise turned into a lesson in the enduring power of simplicity.

Key Insights:

  • Old vs. New: Traditional Fortran code can still compete with modern GPU optimizations.
  • Benchmarking Fun: The experiment highlights the necessity of testing beyond current best practices.
  • Performance Paradox: An ancient loop showed that sometimes, less is more in programming efficiency.

This intriguing exploration challenges our assumptions about technology and optimization in AI applications. It’s a call to appreciate legacy code and recognize the fundamentals in our pursuit of innovation.

🚀 Curious to learn more? Dive into the details of this unexpected performance story and rethink your approach to optimization! Share your thoughts below!

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