Kiln Workbench
A compiler workbench: write passes and IRs in JavaScript, watch every rewrite, generate CUDA and WGSL, and measure kernels on simulated GPUs.
A compiler workbench. Write programs, passes and IRs in JavaScript, watch every rewrite, generate CUDA and WGSL, and measure kernels on simulated GPUs, on WebGPU, or on a CUDA box.
- Lessons with live code: presets are short chapters with the maths, the program, what you should see, and exercises: the roofline, why the compiler fuses, the matmul ladder, occupancy and latency hiding, one program on five GPUs.
- Real kernels: RMSNorm fused, softmax in one kernel, a tiled linear layer, attention, N-body forces, a box-blur stencil, and a regex compiled to an NFA, a DFA and JavaScript.
- Extend it: write your own pass, your own cost model or a new frontend op.
- Every level visible: from the torch-like graph down through tensor, loop, tile and kernel IRs to GPU code, with a trace of each rewrite and the rule that made it.
- Measure: knobs and sliders feed the kernel; simulated devices report Nsight-style metrics and compare against the reference output.
- Agent: a coding agent that can read, change and test the program alongside you.
