<div dir="ltr"><div>OK, I'll look at that, thanks<br><br></div>Timothee<br></div><div class="gmail_extra"><br><div class="gmail_quote">2015-12-01 18:02 GMT+09:00 Dave May <span dir="ltr"><<a href="mailto:dave.mayhem23@gmail.com" target="_blank">dave.mayhem23@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div>I believe what you are looking for is defined by the following options<br></div> -ksp_type richardson<br></div><div> -ksp_richardson_scale <value><br></div> -pc_type jacobi<br><br></div>Thanks,<br></div> Dave<br></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On 1 December 2015 at 08:57, Timothée Nicolas <span dir="ltr"><<a href="mailto:timothee.nicolas@gmail.com" target="_blank">timothee.nicolas@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>Hi all,<br><br></div>Is weighted Jacobi available as a preconditioner ? I can't find it in the list of preconditioners. If not, what is the rationale between this choice ? It is pretty straightforward to code, so if it is not available I can do it without problem I guess, but I am just wondering. In the matrix-free case where SOR is not available by default, it may be better than pure Jacobi, and much easier to parallelize than SOR.<br><br></div>Best<br><br></div>Timothee<br></div>
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