A Parallel and Highly-Portable HPC Poisson Solver: Preconditioned Bi-CGSTAB with alpaka - Pennati, Luca; Andersson, Mans I.; Steiniger, Klaus; Widera, Rene; Narwal, Tapish; Bussmann, Michael; Markidis, Stefano (2025 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW), Parallel and Distributed Processing Symposium Workshops (IPDPSW), 2025 IEEE International, IPDPSW, 2025)