[petsc-users] petsc-3.5 quadruple precision mixed with double

[Hao Zhang]

Thanks for the input. I was doing a few tests. I will put quadruple
precision choice on hold for now. Since the condition number is big at the
beginning, scale of 10^2, I will try to smooth the input of the matrix by
introducing heaviside function.  I do have another question. the
incompressible simulation I'm simulating is using all reflection(free slip
neumann) boundary condition, what will be a good preconditioner? Shall I
start a new thread? so, when other users search, they could use it as a
reference
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