<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Thank you Andreas and Oliver!<div class=""><br class=""></div><div class="">I will have a look at the examples and let you know if I experience any problems.</div><div class=""><br class=""></div><div class="">Timo<br class=""><div class="">
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;">-- <br class="">_________________________________________________</div><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class="">Timo Koch phone: +49 711 685 64676<br class="">IWS, Universität Stuttgart fax: +49 711 685 60430<br class="">Pfaffenwaldring 61 <a href="mailto:timo.koch@iws.uni-stuttgart.de" class="">email: timo.koch@iws.uni-stuttgart.de</a><br class="">D-70569 Stuttgart url: <a href="http://www.iws.uni-stuttgart.de/en/lh2/" class="">www.iws.uni-stuttgart.de/en/lh2/</a><br class="">_________________________________________________</div>
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<div><br class=""><blockquote type="cite" class=""><div class="">On 14. May 2020, at 10:25, Dedner, Andreas <<a href="mailto:A.S.Dedner@warwick.ac.uk" class="">A.S.Dedner@warwick.ac.uk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="caret-color: rgb(0, 0, 0); font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><div class=""><blockquote class="userQuote" style="border-left-width: 3px; border-left-style: solid; border-left-color: rgb(200, 200, 200); padding-left: 1ex; margin-left: 0.8ex; color: rgb(102, 102, 102);"><br class="Apple-interchange-newline">> 3) Does anyone have accessible/shareable application or testing code that uses dynamic load balancing via the dune grid interface? Ideally not using ParMETIS but e.g. Scotch or something else.</blockquote><br class=""></div></div>I forgot to mention: in dune-alugrid/examples/loadbalance</div><div style="caret-color: rgb(0, 0, 0); font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">there are some example of how to implement a loadbalancer from the outside and one example uses Zoltan - which might work for you.</div><div style="caret-color: rgb(0, 0, 0); font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">Andreas<br class=""></div><div id="appendonsend" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""></div><hr tabindex="-1" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline-block; width: 1229.890625px;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class=""></span><div id="divRplyFwdMsg" dir="ltr" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><font face="Calibri, sans-serif" style="font-size: 11pt;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>Dune <<a href="mailto:dune-bounces@lists.dune-project.org" class="">dune-bounces@lists.dune-project.org</a>> on behalf of Oliver Sander <<a href="mailto:oliver.sander@tu-dresden.de" class="">oliver.sander@tu-dresden.de</a>><br class=""><b class="">Sent:</b><span class="Apple-converted-space"> </span>14 May 2020 09:10<br class=""><b class="">To:</b><span class="Apple-converted-space"> </span><a href="mailto:dune@lists.dune-project.org" class="">dune@lists.dune-project.org</a> <<a href="mailto:dune@lists.dune-project.org" class="">dune@lists.dune-project.org</a>><br class=""><b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: [Dune] Repartitioning/dynamic load balancing in Dune</font><div class=""> </div></div><div class="BodyFragment" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><font size="2" class=""><span style="font-size: 11pt;" class=""><div class="PlainText">Hi Timo,<br class=""><br class="">> 1) Is the way implemented in the loadbalance test in dune-grid the way to currently do dynamic load balancing and will it work for dune-uggrid and dune-alugrid? Possible restrictions?<br class=""><br class="">no, that is only for UGGrid.<br class=""><br class="">As Andreas said, UGGrid wants a vector of element target ranks, and ALUGrid uses a call-back.<br class="">So currently your code has to target one grid or the other, specifically.<br class=""><br class="">> 2) What is the rational behind the new “repartition” interface and which problems will it solve?<br class=""><br class="">I don't remember the discussion, but I suppose the aim was to unify the two interface mentioned above.<br class=""><br class="">Indeed, I have not strong preference for the UGGrid interface at all -- it just seemed easiest<br class="">to me at the time. If we reach a consensus to use something else I'll by happy to change it.<br class=""><br class="">> 3) Does anyone have accessible/shareable application or testing code that uses dynamic load balancing via the dune grid interface? Ideally not using ParMETIS but e.g. Scotch or something else.<br class=""><br class="">You don't need any particular partitioner at all for UGGrid load-balancing.<br class="">Just get a vector of desired target ranks for each element somehow,<br class="">and give that to the loadBalance method.<br class=""><br class="">That being said, that part of UGGrid has seen little testing, and you may encounter bugs...<br class=""><br class="">In particular, I suspect that even UG posed some restrictions on how elements can be<br class="">distributed, but that is not documented anywhere. Peter is most likely to know anything<br class="">about this.<br class=""><br class="">Best,<br class="">Oliver<br class=""><br class="">><span class="Apple-converted-space"> </span><br class="">> Already thanks for any answers in advance!<br class="">><span class="Apple-converted-space"> </span><br class="">> Timo <br class="">><span class="Apple-converted-space"> </span><br class="">><span class="Apple-converted-space"> </span><br class="">> -- <br class="">> _________________________________________________<br class="">><span class="Apple-converted-space"> </span><br class="">> Timo Koch phone: +49 711 685 64676<br class="">> IWS, Universität Stuttgart fax: +49 711 685 60430<br class="">> Pfaffenwaldring 61 <a href="mailto:timo.koch@iws.uni-stuttgart.de" class="">email: timo.koch@iws.uni-stuttgart.de</a> <<a href="mailto:timo.koch@iws.uni-stuttgart.de" class="">mailto:timo.koch@iws.uni-stuttgart.de</a>><br class="">> D-70569 Stuttgart url: <a href="http://www.iws.uni-stuttgart.de/en/lh2/" class="">www.iws.uni-stuttgart.de/en/lh2/</a><span class="Apple-converted-space"> </span><<a href="http://www.iws.uni-stuttgart.de/en/lh2/" class="">http://www.iws.uni-stuttgart.de/en/lh2/</a>><br class="">> _________________________________________________<br class="">><span class="Apple-converted-space"> </span><br class="">><span class="Apple-converted-space"> </span><br class="">> _______________________________________________<br class="">> Dune mailing list<br class="">> <a href="mailto:Dune@lists.dune-project.org" class="">Dune@lists.dune-project.org</a><br class="">><span class="Apple-converted-space"> </span><a href="https://lists.dune-project.org/mailman/listinfo/dune" class="">https://lists.dune-project.org/mailman/listinfo/dune</a><br class="">><span class="Apple-converted-space"> </span><br class=""><br class=""></div></span></font></div><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Dune mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class=""><a href="mailto:Dune@lists.dune-project.org" class="">Dune@lists.dune-project.org</a></span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class=""><a href="https://lists.dune-project.org/mailman/listinfo/dune" class="">https://lists.dune-project.org/mailman/listinfo/dune</a></span></div></blockquote></div><br class=""></div></body></html>