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<body class='hmmessage'><div dir='ltr'>Hi, <br>Is there a reason that the convergence of the newton methods in SNES is much better with iterative solvers instead of with direct solvers? This is particularly in reference with the VI solvers. I get nearly quadratic convergence with the iterative solvers, but the code just diverges or converges linearly when i run with -ksp_type preonly .<div>Thanks, </div><div>Subramanya </div> </div></body>
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