In November 2024, Jan Naumann developed a new CPU-targeted SVD algorithm option for the ROCm/jax repository, expanding JAX’s svd functionality beyond the existing divide-and-conquer approach. He implemented a QR-based SVD path by creating a C++ wrapper that interfaces with LAPACK’s gesvd routine via Foreign Function Interface, enabling users to select between SVD algorithms on CPU backends. This work required expertise in C++, Python, and numerical linear algebra, and involved extending the svd API to support the new method. The feature deepened JAX’s numerical capabilities and offered users improved flexibility and potential performance trade-offs for CPU-based computations.