Highlights Keywords Energy, Manufacturing, Engineering Challenge In conventional Yambo simulations, the Hamiltonian matrix generation is the most time-consuming step, while solving the eigenvalue problem is relatively fast. However, with the growing availability of large-scale HPC systems and efficient parallelization strategies, the bottleneck is shifting toward the solver, especially when dealing with large-scale Bethe-Salpeter Equations (BSE). These involve dense pseudo-Hermitian matrices where full diagonalization is often infeasible. Standard iterative solvers for non-Hermitian problems do not exploit … Continue reading Success Story: ISOLV-BSE