Hi! My code is too long and complicated to post so I’ll try to describe the problem: I’m solving a large non-linear system (1 millon dofs to 10), when I try an iterative solver + a preconditioner (most combinations yields the same problem) get the error Solution failed to converge in 0 iterations …

Failed convergence in PETSc (large non-linear problem)

dokken June 25, 2022, 9:19pm 2

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