As with other solution types, the computer resource requirements are a strong function of the problem. As compared to other solvers, ES3p generally takes less time on a given mesh than would a frequency-domain solver or a magnetostatic solver, because of the simplicity of the materials. On a given problem, solution time is affected by the choice of linear solver, and also the tolerances that were chosen. The default linear solver is the conjugate gradient iterative method, and this is generally the most efficient solver for electrostatics. For an iterative linear solver the solution time will generally increase as the Convergence Tolerance is reduced.