gpu

name	gpu
description	Plan abi GPU/backend work — Metal on macOS, CPU SIMD fallback, and the disclosed honest-stub backends (accelerator, shaders, mlir, mobile). Use when asked about GPU/backends, why accelerated=false, or when planning backend work. Routes to backend-diagnostics and abi-superpower-gpu. Never claims native CUDA/ANE/Metal-kernel execution — those are disclosed non-goals.

gpu

Entry point for abi's GPU/backend surface (src/features/gpu/ + the four honest-stub feature modules). Routes to specialists:

You want to…	Use
Report GPU/accelerator/shader/MLIR status + compute matrix	backend-diagnostics
Deep-dive the GPU/Metal superpower	abi-superpower-gpu

Honest status (trust the source flags over any prose)

• Metal on macOS is real: linked at build time; accelerated=false is the normal state until g_metal_context.init() succeeds at runtime; mid-run failure degrades to CPU. No -Dgpu-backend option exists.
• Honest stubs (available=false / native_dispatch=false in each src/features/*/mod.zig): accelerator (selection report + CPU SIMD fallback only), shaders (validate + checksum, no compiler), mlir (textual lower only, no LLVM toolchain), mobile (profile report only, no runtime).
• ANE execution is a disclosed non-goal (100% Zig constraint; requires CoreML/ObjC). Native CUDA/Vulkan/Metal-kernel execution is not linked.

Hard rule

Do not claim real shader compilation, MLIR/LLVM lowering, or native accelerator dispatch — per docs/contracts/external-claims-audit.mdx.