Design on Cedric Bailhttp://bluebugs.github.io/tags/design/Recent content in Design on Cedric BailHugoen-usWed, 15 Apr 2026 10:08:00 -0700We Built Cross-Lane SIMD Primitives. None of Them Helped.http://bluebugs.github.io/blogs/spmd-negative-result/Wed, 15 Apr 2026 10:08:00 -0700http://bluebugs.github.io/blogs/spmd-negative-result/<p>We built six cross-lane SIMD primitives for our Go SPMD proof of concept. We benchmarked them across ten examples. None delivered a measurable win. Every example that shipped fast shipped without them.</p>