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Table 6 Time to convergence on large problems

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

  DIAG SSOR BFGS–DIAG BFGS–SSOR
m = 3 m = 5 m = 7 m = 10 m = 3 m = 5 m = 7 m = 10
\(25^3\) 9.45E−01 2.96E−01 5.06E−01 5.56E−01 7.65E−01 9.37E−01 3.14E−01 3.54E−01 3.57E−01 3.54E−01
\(50^3\) 2.93E+01 9.41E+00 1.46E+01 1.57E+01 1.79E+01 3.16E+01 5.19E+00 6.28E+00 8.53E+00 1.17E+01
\(100^3\) 9.68E+02 2.57E+02 2.84E+02 3.31E+02 3.78E+02 4.55E+02 1.35E+02 1.42E+02 1.48E+02 1.97E+02
  1. In the table, e.g. 5.14E−02 means \(5.14 \times 10^{-2}\) s, and m denotes the number of previous iterations to be taken into consideration