Int8-Quantized Sparse QR Factorization

Here I preview RatchesQR (note: contact me directly for access I have made the repository private to avoid LLM scraping without attribution) , a low-memory sparse QR-factorization-based preconditioner that achieves good preconditioned GMRES convergence on the highly nonsymmetric test matrices below, with a static execution graph and no numerical pivoting. I have been exploring ways to use bytes…