ecmascript_simd

There are lots of issues, can take a while to find all the use cases in them (work has been ongoing for some time). But from memory I can recall that https://github.com/johnmccutchan/ecmascript_simd/issues/59 is interesting here, it mentions, among other things, the major SIMD-using code portion from an important real-world codebase (IMVU). Might also be relevant discussion on the emscripten repo, https://github.com/kripken/emscripten/issues?q=is%3Aopen+is%... as some debate happened there while implementing code generation that emits SIMD.js.

Thanks for the link! I tried going through the issues (randomly clicking) but I am not seeing use cases. https://github.com/johnmccutchan/ecmascript_simd/issues/89 https://github.com/johnmccutchan/ecmascript_simd/issues/85 https://github.com/johnmccutchan/ecmascript_simd/issues/84 They are good technical discussions. What I am looking for is use cases for people to use in websites.

I think you're rushing to judgement pretty quickly here. For example, > 2. Identify proper use cases. The example are quite bogus currently. They show a mandelbrot. That's just one tiny demo. See the github repo discussions for lots of debate on use cases, https://github.com/johnmccutchan/ecmascript_simd/issues This has been discussed very intensively, with input from people from Intel, Mozilla, and Google. Feel free to join in as well. In general, while I sympathize to some extent with you and the Apple position here, you are fighting a strong trend in the industry. C has a SIMD API, C# has SIMD API, Dart has a SIMD API, etc. - all those were created for good reasons. Autovectorization would be great - hopefully Apple can prove it beats the API approach - but no compiler has proven it thus far, hence SIMD APIs in all those languages I me

Check "Bringing SIMD to the Web via Dart" by John McCutchan: https://www.youtube.com/watch?v=CKh7UOELpPo He's also the guy wrote the proposal for ECMAScript: https://github.com/johnmccutchan/ecmascript_simd Also, using SIMD is way easier than using shaders. You just write something like this: double average (Float32x4List list) { var n = list.length; var sum = new Float32x4.zero(); for (int i = 0; i < n; i++) { sum += list[i]; } var total = sum.x + sum.y + sum.z + sum.w; return total / (n * 4); } Instead of: double average (Float32List list) { var n = list.length; var sum = 0.0; for (int i = 0; i < n; i++) { sum += list[i]; } return sum / n; }