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sw-MLPL

sw-MLPL is Software Wrighter's Machine Learning Programming Language: a Rust-first, APL-inspired array and tensor language for learning, experimentation, visualization, and small-model training. It combines a language, a browser playground, native command-line tools, accelerator backends, worked demos, tutorials, and an inspectable runtime.

Try the browser playground with no installation, or begin with Getting Started.

flowchart LR
    Learn[Learn array and ML ideas] --> Language[MLPL language]
    Explore[Explore data and models] --> Language
    Train[Train and fine-tune models] --> Language
    Language --> Browser[Browser and WASM]
    Language --> CPU[Native CPU]
    Language --> MLX[Apple GPU via MLX]
    Language --> CUDA[NVIDIA GPU via CUDA]
    Browser --> Visualize[Interactive visualizations]
    CPU --> Visualize
    MLX --> Visualize
    CUDA --> Visualize

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What you can do

• Work with scalar, vector, matrix, and higher-rank arrays using concise array operations.
• Preserve meaning with named axes and typed ML value tags.
• Build models from linear, activation, normalization, embedding, attention, residual, LoRA, recurrent, and Engram pieces.
• Differentiate expressions, optimize parameters, and observe training with loss telemetry.
• Train tiny language models, classifiers, board policies, and supported LoRA models.
• Explore classical ML, dimensionality reduction, attention, image models, neural thickets, cellular automata, and other executable demos.
• Render charts, heatmaps, decision boundaries, model diagrams, 3-D scenes, and animated visualizations.
• Run locally in a terminal, entirely in a browser, or connect a browser or terminal client to a native compute server.
• Use CPU everywhere, MLX on Apple Silicon, and CUDA on supported Linux/NVIDIA hosts.
• Embed MLPL in Rust with the mlpl! macro or lower supported programs to native Rust binaries.

Choose a path

Goal	Start here
Try it without installing anything	Browser and WASM
Install and run scripts locally	Getting Started
Understand the language	Language Tour
See the full feature inventory	Capability Matrix
Find a representative project	Use Cases
Use native CPU execution	Native CPU
Use an Apple Silicon GPU	Apple Silicon and MLX
Use an NVIDIA GPU	NVIDIA and CUDA
Connect a browser to native compute	Server and Remote Execution
Understand the implementation	Architecture and Flows
Browse demos and teaching material	Demos and Learning Paths
Find source documents and code	Resources and Reference
See known stale source documentation	Documentation Errata

Link conventions

Links such as Use Cases navigate within this wiki. Links such as the repository README and the language reference open Markdown or text files in the sw-mlpl source repository. This distinction is used throughout the wiki.

What's new and what surrounds the core

The Recent Changes page summarizes user-visible additions from 2026-08-04 through 2026-09-02, including the expanded compiler subset, native extensions and ports, file/stream tooling, compact syntax, and structural dataflow visualization.

The Companion Repositories page maps the adjacent executable curricula, utilities, native extensions, reusable MLPL libraries, and the emufpga Serial Parameter Machine research project.