<div class="gmail_quote">On Tue, Sep 20, 2011 at 11:17, Gong Ding <span dir="ltr"><<a href="mailto:gdiso@ustc.edu">gdiso@ustc.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>Thanks. Any recommends for solving this type of problems? <br>It's our bottleneck now.<br>Direct solver works, but not efficient for large 3D problem.<br>Krylov space based solver seems not rubost enough. <br>A more exact ILU preconditioner may help? </div>
</blockquote></div><br><div>You can use domain decomposition with the jump aligned to subdomain boundaries. There are a variety of schemes with convergence rate independent of the jump, from both the overlapping Schwarz and Neumann-Neumann families.</div>
<div><br></div><div>Can you describe the 3D problem in more detail?</div>