Month: 2025-12 | Repository: oneapi-src/oneDNN Focus: Feature delivery for binary operations in x64 CPU path. Description: Implemented per-width broadcasting strategy (per_w) for binary operations to improve flexibility for varying data shapes and potential performance in targeted scenarios. Commit reference: 9eb361e34c683e711c18e3dbe295d4f17afde1fb (cpu: x64: binary: enable per_w strategy) (#4018)

Concise monthly summary for 2025-07 focusing on the uxlfoundation/oneDNN work. Reverted an experimental per_w broadcasting strategy for x64 binary operations to restore established, stable broadcasting behavior. This change touched the x64 code paths in jit_uni_binary.cpp and jit_uni_binary_kernel.cpp and included removal of the related test case from the regression inputs to reflect the revert. Key commits and scope: - bd26fbc77885afd36555306106af509db38c5707: Revert "cpu: x64: binary: Supporting per_w broadcast strategy (#2778)" (#3596) - Reverted the per_w strategy for x64 binary ops; removed associated test coverage to align tests with current behavior. Key achievements (top 3-5): - Stabilized x64 binary operation broadcasting by removing the per_w path, reducing potential edge-case failures. - Maintained compatibility with existing broadcast strategies and overall JIT unary/binary operation flow. - Updated regression test inputs to reflect the revert, preventing false regressions. Overall impact and business value: - Ensures correctness and predictability of x64 binary operations, minimizing customer-facing bugs related to broadcasting strategies. - Reduces risk of performance or correctness regressions in critical computational kernels used in workloads. - Maintains a reliable path for downstream optimizations by keeping the codebase aligned with the current supported features. Technologies/skills demonstrated: - C++, JIT compilation paths, x64-specific optimization, binary operation kernels (jit_uni_binary, jit_uni_binary_kernel). - Codebase hygiene: targeted revert, regression test maintenance, and regression test coverage alignment.

Monthly work summary for 2025-03 focusing on oneDNN uxlfoundation changes. Delivered feature: Per_w broadcasting strategy support for x64 binary operations in oneDNN, expanding supported broadcasting configurations and enabling more efficient execution paths. Core changes updated: jit_uni_binary.cpp and jit_uni_binary_kernel.cpp to integrate the per_w strategy. Added regression test coverage in harness_binary_regression to validate per_w with multiplication and post-ops. Commit reference: 21636077606a57637a478b844c541851551ccfdd.

February 2025 monthly summary for uxlfoundation/oneDNN focusing on test robustness improvements for benchnn pooling on x64 and related stability work. Implemented a defensive check for large input buffers in the benchnn pooling test; when large buffers are detected, the kernel is marked as unimplemented to prevent potential accuracy issues during benchmarking. This change enhances test reliability and guards against misleading performance signals in x64 builds.