NUTILS 8.1 "Idiyappam"
arguments
level=0
degree=1
k=0.25
T1=70
T2=20
start 2023-08-15 02:16:27
gmsh
loaded 2d gmsh topology consisting of #270 elements - volume groups: interior #270 - boundary groups: bottom #5, outer #24, left #5, inner #16
optimize
solve
solving 42 dof system to machine precision using arnoldi solver
constructing symmetric direct preconditioner
matrix is diagonally dominant, solving as SPD
peak memory use 154k
residual decreased by 15.6 orders using 0 krylov vectors
residual decreased by 0.1 orders using 1 krylov vectors
residual decreased by 0.0 orders using 2 krylov vectors
residual decreased by 0.0 orders using 3 krylov vectors
residual decreased by 0.0 orders using 4 krylov vectors
solver returned with residual 9e-16
constrained 42/161 dofs
optimum value 0.00e+00
solve
solving 119 dof system to machine precision using arnoldi solver
constructing direct preconditioner
peak memory use 214k
residual decreased by 15.1 orders using 0 krylov vectors
residual decreased by 0.2 orders using 1 krylov vectors
residual decreased by 0.0 orders using 2 krylov vectors
solver returned with residual 4e-14
solution.png
error.png
L2 error: 3.02e-03
H1 error: 3.27e+00
finish 2023-08-15 02:16:29, elapsed 0:02