Posts tagged: gpu
The von Neumann Bottleneck Is the AGI Bottleneck — Why All Modern Chips Are Still Stuck in 1945
Every chip described in the APU vs GPU vs NPU post — including Apple M4, AMD Strix Point, and NVIDIA H200 — is fundamentally a von Neumann machine. The separation of compute and memory is not just a performance bottleneck; it's the single biggest hardware barrier to AGI. Here's why, with the numbers.
Inside amdgpu GART and IOMMU — How Zero-Copy GPU Access Works at the Kernel Level
Kernel-level deep dive into the amdgpu driver's GART, IOMMU integration, GPUVM page tables, GEM/TTM buffer objects, DMA-BUF zero-copy paths, and how the GPU accesses your malloc'd buffer without copying a single byte.
Infinity Fabric and Cache Coherence — How AMD and Apple Build Unified Memory
Silicon-level deep dive into Infinity Fabric, MOESI/MESI/MESIF cache coherence protocols, Apple UltraFusion, and how unified memory actually works at the transistor level.
APU vs GPU vs NPU — What Every Silicon Architecture Actually Does, Down to the Transistor
A technical deep dive into APU, GPU, and NPU architectures — memory hierarchies, interconnects, programming models, and why your laptop has all three on one chip.
The AppImage/FUSE/GPU Crash Rabbit Hole I Debugged
Freebuff Desktop (an Electron AppImage) wouldn't launch on my AMD laptop. Three hours later: FUSE missing, extracted AppImage bug, Wayland GPU crash, X11 fallback. Here's the full autopsy.