NUTILS 8.1 "Idiyappam"

arguments

mode=NURBS{nrefine=2}

radius=0.5

traction=0.1

poisson=0.3

start 2023-08-15 05:54:10

optimize

solve

solving 60 dof system to machine precision using arnoldi solver

constructing symmetric direct preconditioner

peak memory use 198k

residual decreased by 15.7 orders using 0 krylov vectors

residual decreased by 0.1 orders using 1 krylov vectors

solver returned with residual 1e-15

optimum value -7.11e-15

hole radius exact up to L2 error 6.71e-17

optimize

constrained 12/120 dofs

optimum value 0.00e+00

optimize

solve

solving 18 dof system to machine precision using arnoldi solver

constructing symmetric direct preconditioner

peak memory use 148k

residual decreased by 16.0 orders using 0 krylov vectors

residual decreased by 0.0 orders using 1 krylov vectors

residual decreased by 0.3 orders using 2 krylov vectors

solver returned with residual 8e-18

constrained 30/120 dofs

optimum value 9.74e-08

solve

solving 90 dof system to machine precision using arnoldi solver

constructing direct preconditioner

peak memory use 327k

residual decreased by 15.5 orders using 0 krylov vectors

residual decreased by 0.1 orders using 1 krylov vectors

residual decreased by 0.1 orders using 2 krylov vectors

solver returned with residual 2e-16

loop _sample_X 88%

RuntimeWarning: singular matrix In /usr/local/lib/python3.11/dist-packages/nutils/warnings.py:17

errors: L2=9.49e-05, H1=2.86e-03

finish 2023-08-15 05:54:13, elapsed 0:03