<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Fri, Jun 1, 2018 at 10:22 PM, Fande Kong <span dir="ltr"><<a href="mailto:fdkong.jd@gmail.com" target="_blank">fdkong.jd@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 class="gmail_extra"><div class="gmail_quote"><span class="">On Fri, Jun 1, 2018 at 5:40 PM, Matthew Knepley <span dir="ltr"><<a href="mailto:knepley@gmail.com" target="_blank">knepley@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class="m_9067336894141425550gmail-">On Fri, Jun 1, 2018 at 7:09 PM, Smith, Barry F. <span dir="ltr"><<a href="mailto:bsmith@mcs.anl.gov" target="_blank">bsmith@mcs.anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
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Fande,<br>
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This is a great question. I am forwarding it to Mike Heroux who has a high level position in the ECP; because I have similar concerns and also don't have a good answer. ParMetis does indeed have a poor license and essentially no support. Perhaps Mike
has some ideas.</div></div></blockquote><div><br></div></span><div>Also, the parallel scalability is crappy (sorry George).</div></div></div></div></blockquote><div><br></div></span><div>Do we know the underneath reason why the parallels scalability is poor? Poor algorithm? Poor implementation?</div></div></div></div></blockquote><div><br></div><div>Algorithmic problems.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>Here is a list of partitioning packages <a href="https://en.wikipedia.org/wiki/Graph_partition#cite_note-patoh-16" target="_blank">https://en.wikipedia.org/<wbr>wiki/Graph_partition#cite_<wbr>note-patoh-16</a></div><div><br></div><div>Anybody has experiences on any of the listed packages?</div></div></div></div></blockquote><div><br></div><div>I randomly tried to get one of these, and failed. These lists are pointless without repository links.</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class="HOEnZb"><font color="#888888"><div>Fande,</div></font></span><span class=""><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div> Bill Gropp has proposed in the past developing a new</div><div>partitioner along more scalable lines, such as the Teng algorithm used in Padma's 2013 SC paper</div><div>(<a href="https://dl.acm.org/citation.cfm?id=2503280" target="_blank">https://dl.acm.org/citation.c<wbr>fm?id=2503280</a>). Jed favors a multilevel approach which I do not understand.</div><div>Its a shame that all the development time that went into PT-Scotch could not produce a scalable, open</div><div>partitioner. Also, the label-push stuff seems only to work well for highly connected graphs, not meshes.</div><div><br></div><div> Matt</div><span class="m_9067336894141425550gmail-"><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="auto" style="word-wrap:break-word" class="m_9067336894141425550gmail-m_5385558153081933808gmail-m_2548364002075660089ApplePlainTextBody"><div class="m_9067336894141425550gmail-m_5385558153081933808gmail-m_2548364002075660089ApplePlainTextBody"><span class="m_9067336894141425550gmail-m_5385558153081933808gmail-HOEnZb"><font color="#888888"><br>
Barry</font></span><div><div class="m_9067336894141425550gmail-m_5385558153081933808gmail-h5"><br>
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<blockquote type="cite">On Jun 1, 2018, at 5:46 PM, Kong, Fande <<a href="mailto:fande.kong@inl.gov" target="_blank">fande.kong@inl.gov</a>> wrote:<br>
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Hi Developers,<br>
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I have introduced MatPartitioning interface to MOOSE. It is working great, and we can use all external partitioning packages via a simple interface.
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But here is a concern. Almost all the packages are not under development any more. Does this make a bug fix more difficult in the future. Also some of them have bad licenses.
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I was wondering there is any other partitioning package in the community? <br>
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Thanks,<br>
<br>
Fande,<br>
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</blockquote></span></div><span class="m_9067336894141425550gmail-HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br><div class="m_9067336894141425550gmail-m_5385558153081933808gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="http://www.caam.rice.edu/~mk51/" target="_blank">https://www.cse.buffalo.edu/~k<wbr>nepley/</a><br></div></div></div></div></div>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="http://www.caam.rice.edu/~mk51/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div>
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