[jsheard]

ISPC is a step above the .NET Vector stuff, it's more or less a GPU shader language except it compiles down to SSE/AVX/NEON code instead. In fact I think it was originally envisioned to be a shader language for Intel's ill-fated Larrabee GPU, since that was just meant to be an extremely wide x86 chip.

[garaetjjte]

Larrabee influenced ispc but was dead by that time. https://pharr.org/matt/blog/2018/04/18/ispc-origins

[neonsunset]

Indeed. .NET's SIMD primitives and platform intrinsics are more like the building blocks on top of which ISPC-like framework could've been built in .NET (more likely in F# since it's more flexible for libraries that want DSL-like customization).