On 8/14/20 9:20 PM, yuesu jin wrote:
I tried a few levels of the tolerance, 1e-3, 1e-4 ,1e-6 and 1e-8. 1e-3
converged because that is in the same level with the solution. Error occurs
below 1e-4. I have tried the Jacobi preconditioner instead of SSOR in the
single thread CG version, it converged as well.
Is this 1e-4 * system_rhs.l2_norm(), or just 1e-4? If the latter, what is the
size of system_rhs.l2_norm()? You should choose a tolerance that is
proportional to the norm of the right hand side.
Best
W.
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