<div>Hi
Jed Brown, <br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>> Hi developers,</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>></span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>> I use DMComplex represent the unstructured mesh. Everything is OK, but the</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>> function "DMComplexDistribute" is always time-consuming. I guess that it</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>> results from using the PetscSF. I don't know why we use this communication</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>> model. Could you please make some tests on the function? Or could we use</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>> other communication functions ?</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>></span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>1. Always send -log_summary</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>2. Distributing a mesh is a fairly expensive operation.</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">>3. DMComplex is new and we are more interested in getting the right</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">capability than in micro-tuning performance. Mesh distribution is usually</span><br style="font-family: 'lucida Grande', Verdana; line-height: 23px; "><span style="font-family: 'lucida Grande', Verdana; line-height: 23px; ">not done frequently.</span>
</div><div><br></div><div><div style="color:#909090;font-family:Arial Narrow;font-size:12px">------------------</div><div style="font-size:14px;font-family:Verdana;color:#000;"><div>Fande Kong</div><div>ShenZhen Institutes of Advanced Technology</div><div>Chinese Academy of Sciences</div>
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