Emre Cecanpunar — notes https://maxd.science/ Technical notes on GPU compilers, graphics drivers, and low-level systems. en A signed saturating add through NAK https://maxd.science/posts/nak-iadd-sat.html https://maxd.science/posts/nak-iadd-sat.html Mon, 24 Aug 2026 12:00:00 +0300 From CUDA's five-instruction sequence to PLOP3 .SIGN, mixed-source encodings, and CTS. Sizing BRW's scoreboard to the register file https://maxd.science/posts/brw-scoreboard-register-file.html https://maxd.science/posts/brw-scoreboard-register-file.html Mon, 24 Aug 2026 11:00:00 +0300 Removing impossible GRF state from a compiler dataflow pass, then measuring the tradeoff. Label state, not directive state, for Thumb symbols https://maxd.science/posts/llvm-thumb-symbol-state.html https://maxd.science/posts/llvm-thumb-symbol-state.html Sun, 26 Jul 2026 12:00:00 +0300 Tracing a late .type bug through LLVM MC, and how GNU as preserves the right state for Arm and Thumb function symbols. Booting NuttX on RK3588S https://maxd.science/posts/nuttx-rk3588s-bringup.html https://maxd.science/posts/nuttx-rk3588s-bringup.html Sun, 26 Jul 2026 11:00:00 +0300 The initial Apache NuttX ARM64 bring-up for RK3588S and Orange Pi 5 Pro. aco_dump: compiling shaders without a GPU https://maxd.science/posts/aco-standalone-tool.html https://maxd.science/posts/aco-standalone-tool.html Fri, 20 Mar 2026 00:00:00 +0300 SPIR-V to ACO IR through RADV/ACO without a physical GPU. My Mesa build and debug loop https://maxd.science/posts/getting-started-mesa.html https://maxd.science/posts/getting-started-mesa.html Tue, 13 Jan 2026 00:00:00 +0300 Small builds, verified driver loading, source search, sanitizers, and bisecting. A working map of the Linux graphics stack https://maxd.science/posts/how-graphics-drivers-work.html https://maxd.science/posts/how-graphics-drivers-work.html Mon, 29 Dec 2025 00:00:00 +0300 The boundaries between a Vulkan application, Mesa, DRM, and GPU machine code.