RunMat – runtime with auto CPU/GPU routing for dense math
Hi, I’m Nabeel. In August I released RunMat as an open-source runtime for MATLAB code that was already much faster than GNU Octave on the workloads I tried. https://news.ycombinator.com/item?id=44972919 Since then, I’ve taken it further with RunMat Accelerate: the runtime now automatically fuses operations and routes work between CPU and GPU. You write MATLAB-style code, and RunMat runs your computation across CPUs and GPUs for speed. No CUDA, no kernel code. Under the hood, it builds a graph of your array math, fuses long chains into a few kernels, keeps data on the GPU when…
RunMat – runtime with auto CPU/GPU routing for dense math launched on December 2, 2025 with 21 votes, #573 of 11,628 launches that month and more than 90% of that year's launches.
In plain words
RunMat is an open-source runtime that executes MATLAB-style code with automatic optimization across CPUs and GPUs. Developers write standard array mathematics without CUDA or kernel code, while RunMat automatically fuses operations and routes computations to available hardware for faster execution. The runtime builds computation graphs, minimizes GPU transfers, and falls back to CPU acceleration for smaller workloads, eliminating manual hardware management from scientific computing workflows.
written from the facts on this page · September 2026
From the sources
Open source math and physics engine that executes MATLAB-syntax code. Features a modern compiler, automatic GPU acceleration for large calculations, and support for math on geometry / FEA calculations. - runmat-org/runmat
In the maker’s words, at launch
Hi, I’m Nabeel. In August I released RunMat as an open-source runtime for MATLAB code that was already much faster than GNU Octave on the workloads I tried. https://news.ycombinator.com/item?id=44972919 Since then, I’ve taken it further with RunMat Accelerate: the runtime now automatically fuses…
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