Table 6.

Iteration numbers (it.) per Newton step and computational time (in s) per Newton step for the all-floating and the classical FETI approach with quadratic ansatz functions comparing the three considered preconditioners. The penalty parameter κ was varied from 10 to 1000 kPa. Mesh: mesh of the aorta subdivided in 480 subdomains, computed with 480 cores.

all-floating
κ	identity preconditioner		lumped preconditioner		Dirichlet preconditioner
10	940 it.	491.1 s	283 it.	209.5 s	71 it.	157.3 s
100	1519 it.	1186.4 s	523 it.	332.0 s	105 it.	178.1 s
1000	3371 it.	2584.5 s	1372 it.	746.0 s	206 it.	282.7 s
classical
κ	identity preconditioner		lumped preconditioner		Dirichlet preconditioner
10	1319 it.	654.2 s	333 it.	225.2 s	113 it.	188.4 s
100	2362 it.	1140.6 s	664 it.	402.6 s	110 it.	177.5 s
1000	5563 it.	4168.3 s	1742 it.	943.1 s	204 it.	280.1 s