Can it run cuda? Otherwise not that practical.

Minor interest. Can this approach run j/k or more important lisp?

You can do GPGPU stuff via WebGL, right?

WebGL doesn't have compute shaders. There are (gross) hacks that "emulate" gpu compute on top of stock shaders but they're limited and can't possibly compete with CUDA.

Compute shaders are available on chrome on windows if you start chrome with some flags. Here are some compute shader demos: https://github.com/9ballsyndrome/WebGL_Compute_shader

And here is a draft spec for WebGL2 Compute: https://www.khronos.org/registry/webgl/specs/latest/2.0-comp...

Only a matter of time until this will be available in chrome and firefox by default. Probably never in Safari though, since it doesn't even support WebGL 2.