RunMat: Free Runtime for MATLAB Code (Browser & Desktop)
Execute .m files instantly with automatic GPU acceleration. An open-source runtime compatible with standard MATLAB code. No license or installation required.
Syntax you already know.
Write in MATLAB, and RunMat runs your computation automatically across CPU and GPUs for maximum speed. No CUDA, no kernel code.
x = 0:0.001:4*pi; % 0 to 4π in steps of 0.001
y = sin(x) .* exp(-x/10); % regular MATLAB language mathSee your results. Catch your mistakes.
Rich plotting and live diagnostics, built into the same environment as your code. No separate tools. No waiting until runtime to find errors.
Why it's fast: GPU fusion & residency
RunMat fuses sequential operations into fewer computational steps and keeps arrays on device between steps ("residency"). That means less memory traffic and fewer GPU program launches, so your scripts finish sooner.
Real workloads, reproducible results
Benchmarked on an Apple M2 Max, 32GB. Times are wall-clock milliseconds for each configuration.
4K image pipeline: per-image mean/std, normalization, gain/bias, gamma, and MSE.
Monte Carlo: geometric Brownian motion with terminal PnL and risk stats.
Elementwise math: long chain of sin, exp, cos, and tanh operations on big 1D arrays.
Each number is the median of 3 runs. Full scripts live in the benchmarks folder.
One runtime. Every platform.
The same math engine runs in your browser, on your desktop, and from the command line — with no dependencies and no license. Comparing options? Read our MATLAB alternatives guide and why MATLAB-style syntax still matters.
Free and open source
The RunMat runtime is MIT licensed and on GitHub. The JIT, the fusion engine, the GPU planner — all open source and actively maintained.
Run MATLAB code online — no install, no license
Start running math immediately in your browser.