COOLJAPAN

Posts tagged #gemm

2 posts

Aug 13, 2026 · 10 min

OxiCUDA 0.5.5 Released — The Alt-Backend Audit Finds Metal's GPU Kernels Were Never Called

OxiCUDA 0.5.5 audits oxicuda-metal and oxicuda-webgpu on real Apple Silicon, fixing conv2d/attention/softmax false completions where finished MSL kernels sat unused behind CPU scalar loops. Separately, a downstream investigation wires up an unreachable split-K GEMM path, replaces a silent Winograd no-op with a real kernel, and fixes wrong Ampere GA10x hardware constants — measured on a real RTX A4000. 38,987 tests, ~1.31M SLoC, 74 crates.

releaseoxicudacuda
Jul 14, 2026 · 9 min

OxiCUDA 0.5.0 Released — F64 PTX Correctness, Mixed-Precision GEMM Fixes, and Zero unwrap() Left

OxiCUDA 0.5.0, the sovereign GPU-compute layer for the COOLJAPAN ecosystem, fixes F64-precision PTX codegen bugs that made ptxas reject elementwise and reduction kernels, closes a mixed-precision GEMM accumulator bug, and hits zero unwrap()/expect() in library code. 38,622 tests, ~1.30M SLoC, 73 crates.

releaseoxicudacuda