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<div>Miguel,</div>
<div> In this example the DM is created initially only on proc. 0. Once the DM gets partitioned (DMNetworkDistribute()), another DM is created that has the appropriate node,edge,component info on each processor. </div>
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<div>Shri</div>
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<span style="font-weight:bold">From: </span>Miguel Angel Salazar de Troya <<a href="mailto:salazardetroya@gmail.com">salazardetroya@gmail.com</a>><br>
<span style="font-weight:bold">Date: </span>Fri, 20 Feb 2015 13:10:40 -0600<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>" <<a href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>><br>
<span style="font-weight:bold">Subject: </span>[petsc-users] DMNetworkSetSizes called by all processors<br>
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<div dir="ltr">Hi
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<div>I was checking this example:</div>
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<div><a href="http://www.mcs.anl.gov/petsc/petsc-current/src/snes/examples/tutorials/network/pflow/pf.c.html">http://www.mcs.anl.gov/petsc/petsc-current/src/snes/examples/tutorials/network/pflow/pf.c.html</a></div>
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<div>In line 443, the data is read by processor 0 and DMNetworkSetSizes is called in 461 by all processors, since it is collective. However, the data read by processor 0 has not been broadcasted and <span style="color:rgb(0,0,0)">numEdges and </span><span style="color:rgb(0,0,0)">numVertices
and have still a value of zero for the other processors. Does this mean that the other processors create a dummy DMNetwork and wait to receive their partition once the partitioning is called in line 508? Is this a standard procedure to create meshes in parallel?</span></div>
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<div><font color="#000000">Thanks</font></div>
<div><font color="#000000">Miguel<br>
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<div dir="ltr"><font face="verdana,sans-serif"><b>Miguel Angel Salazar de Troya</b></font><span><font color="#888888"><br>
<font face="arial,helvetica,sans-serif">Graduate Research Assistant<br>
Department of Mechanical Science and Engineering<br>
</font>University of Illinois at Urbana-Champaign<br>
(217) 550-2360<br>
<a href="mailto:salaza11@illinois.edu" target="_blank">salaza11@illinois.edu</a></font></span>
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