Skip to main content
# Table 12 Condition numbers of original and BFGS preconditioned matrices

From: Newton–Raphson preconditioner for Krylov type solvers on GPU devices

Condition number | |||
---|---|---|---|

First | Last | original | |

GR_30_30 | \(1.95 \times 10^2\) | \(7.81 \times 10^1\) | \(1.95 \times 10^2\) |

BCSSTK14 | \(7.24 \times 10^3\) | \(7.23 \times 10^3\) | \(1.19 \times 10^{10}\) |

BCSSTK15 | \(8.21 \times 10^4\) | \(9.23 \times 10^2\) | \(6.54 \times 10^9\) |