A developer demonstrates how Clojure can achieve near-C performance for a computationally intensive 3D graphics task by leveraging Java's Vector API for explicit SIMD operations. Through careful optimization and collaboration with an AI coding assistant, they reduced the performance gap from 4x slower than C to within 10% of C's speed. The article provides detailed technical insights into the optimization process and the importance of explicit vectorization on the JVM.
Background
Clojure is a functional programming language that runs on the Java Virtual Machine (JVM), traditionally facing performance challenges for low-level numerical computations compared to natively compiled languages like C. The Java Vector API, part of Project Panama, provides explicit SIMD operations that can significantly improve performance for numerical workloads.
- Source
- Lobsters
- Published
- Jun 15, 2026 at 12:44 PM
- Score
- 7.0 / 10