Table 2 Iterations and flop counts for the reduced Hessian and KKT solvers
From: The numerical solution of forward and inverse Robin problems for Laplace’s equation
α | 10−1 | 10−2 | 10−3 | 10−4 |
|---|---|---|---|---|
PSQMR itns | 34 | 49 | 93 | 204 |
PCG itns | 7 | 12 | 21 | 56 |
PSQMR work | 1.2e9 | 3.1e9 | 5.4e9 | 1.8e10 |
PCG work | 2.0e10 | 3.5e10 | 6.8e10 | 1.5e11 |