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<div class="moz-cite-prefix">I'm sorry about that. I attached the
output files here with ' -ksp_monitor -ksp_view -log_summary'.
They are named after the grid size and pc-type. <br>
<br>
cheers,<br>
Alan<br>
On 9/14/2012 5:51 PM, Jed Brown wrote:<br>
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cite="mid:CAM9tzSmxqEqLcbzqoBA025yhF_7QWXNrkf0Ck=_9pxfrz4nF4Q@mail.gmail.com"
type="cite">
<div class="gmail_quote">On Fri, Sep 14, 2012 at 5:49 PM, Matthew
Knepley <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:knepley@gmail.com" target="_blank">knepley@gmail.com</a>></span>
wrote:<br>
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<div class="im">On Fri, Sep 14, 2012 at 5:40 PM, Zhenglun
(Alan) Wei <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:zhenglun.wei@gmail.com" target="_blank">zhenglun.wei@gmail.com</a>></span>
wrote:<br>
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<div class="im">
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.8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>Dear folks,<br>
I did some test with -pc_type gamg with
/src/ksp/ksp/example/tutorial/ex45.c. It is not as
good as default -pc_type when my mesh (Cartisian) is
100*50*50; while it is a little bit better than the
default one when the mesh is 200*100*100. Therefore,
I guess this type of pc is good for larger problem.
Is that ture? or is there any rule of thumb for this
type of preconditioner? BTW, I tested it with 8
processes. <br>
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<div>When asking questions about convergence, always always
ALWAYS send the output of -ksp_monitor -ksp_view. If</div>
<div>you don't, we are just guessing blindly.</div>
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<div>And -log_summary because this is about performance.</div>
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