======================
*** PetIBM - Start ***
======================
directory: .

Parsing file ./cartesianMesh.yaml... done.

Parsing file ./flowDescription.yaml... done.

Parsing file ./simulationParameters.yaml... done.

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Cartesian grid
---------------------------------------
number of cells: 20 x 20
---------------------------------------

---------------------------------------
Flow
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dimensions: 2
viscosity: 0.01
initial velocity field:
	0.
	0.
boundary conditions (component, type, value):
	->location: xMinus (left)
		0 	 DIRICHLET 	 0.
		1 	 DIRICHLET 	 0.
	->location: xPlus (right)
		0 	 DIRICHLET 	 0.
		1 	 DIRICHLET 	 0.
	->location: yMinus (bottom)
		0 	 DIRICHLET 	 0.
		1 	 DIRICHLET 	 0.
	->location: yPlus (top)
		0 	 DIRICHLET 	 1.
		1 	 DIRICHLET 	 0.
---------------------------------------

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Time-stepping
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formulation: Navier-Stokes solver (Perot, 1993)
convection: Euler-explicit
diffusion: Euler-implicit
time-increment: 0.0005
starting time-step: 0
number of time-steps: 1
saving-interval: 1
---------------------------------------

----------------------------------------
KSP info: Velocity system
----------------------------------------
KSP Object:(velocity_) 2 MPI processes
  type: bcgs
  maximum iterations=10000
  tolerances:  relative=1e-08, absolute=0., divergence=10000.
  left preconditioning
  using nonzero initial guess
  using DEFAULT norm type for convergence test
PC Object:(velocity_) 2 MPI processes
  type: jacobi
  PC has not been set up so information may be incomplete
  linear system matrix = precond matrix:
  Mat Object:   2 MPI processes
    type: mpiaij
    rows=760, cols=760
    total: nonzeros=3644, allocated nonzeros=3800
    total number of mallocs used during MatSetValues calls =0
      not using I-node (on process 0) routines

----------------------------------------
KSP info: Poisson system
----------------------------------------
KSP Object:(poisson_) 2 MPI processes
  type: cg
  maximum iterations=20000
  tolerances:  relative=1e-08, absolute=0., divergence=10000.
  left preconditioning
  using nonzero initial guess
  using DEFAULT norm type for convergence test
PC Object:(poisson_) 2 MPI processes
  type: gamg
  PC has not been set up so information may be incomplete
    MG: type is MULTIPLICATIVE, levels=0 cycles=unknown
      Cycles per PCApply=0
      Using Galerkin computed coarse grid matrices
      GAMG specific options
        Threshold for dropping small values from graph 0.
        AGG specific options
          Symmetric graph false
  linear system matrix = precond matrix:
  Mat Object:   2 MPI processes
    type: mpiaij
    rows=400, cols=400
    total: nonzeros=1920, allocated nonzeros=1920
    total number of mallocs used during MatSetValues calls =0
      not using I-node (on process 0) routines

[time-step 0] Writing grid into file... done.
  Residual norms for velocity_ solve.
  0 KSP preconditioned resid norm 1.148589971947e-03 true resid norm 2.324746103222e+00 ||r(i)||/||b|| 1.000000000000e+00
  1 KSP preconditioned resid norm 8.875846864181e-09 true resid norm 1.793849713607e-05 ||r(i)||/||b|| 7.716325284387e-06
  2 KSP preconditioned resid norm 1.418061760018e-13 true resid norm 2.860743141913e-10 ||r(i)||/||b|| 1.230561538720e-10
Linear velocity_ solve converged due to CONVERGED_RTOL iterations 2
KSP Object:(velocity_) 2 MPI processes
  type: bcgs
  maximum iterations=10000
  tolerances:  relative=1e-08, absolute=0., divergence=10000.
  left preconditioning
  using nonzero initial guess
  using PRECONDITIONED norm type for convergence test
PC Object:(velocity_) 2 MPI processes
  type: jacobi
  linear system matrix = precond matrix:
  Mat Object:   2 MPI processes
    type: mpiaij
    rows=760, cols=760
    total: nonzeros=3644, allocated nonzeros=3800
    total number of mallocs used during MatSetValues calls =0
      not using I-node (on process 0) routines
 ** On entry to DGESVD parameter number  6 had an illegal value