After P-Loop Pass
This item appears only if you selected Use Iterative Solver.
The iterative solver takes over from the direct solver after the pass you specify. You can enter a number from 1 to 9. The default of 2 is usually the best choice. The iterative solver does not always converge if you set this value to 1, and if you set the value to 3 or higher, your job might use excessive time, disk space, and/or memory.