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<p style="margin-bottom: 0cm; line-height: 100%">Dear Dune community,</p>
<p style="margin-bottom: 0cm; line-height: 100%">I like to solve a system like (mass + dt * stiffness) * u = mass * u_0 in parallel<span lang="en-US">.</span></p>
<p style="margin-bottom: 0cm; line-height: 100%"><span lang="en-US">I start constructing my basis functions out of a parallel overlapping grid and with them I call the assemblers from dune-fufem.
</span><span lang="en-US">So now every process has a part of the global mass and stiffnessmatrix? Is this so far a proper procedure?</span></p>
<p style="margin-bottom: 0cm; line-height: 100%"><span lang="en-US">In the next step I am
</span><span lang="en-US">at least </span><span lang="en-US">confused </span><span lang="en-US">about dealing with the index sets (remote, local, global) for
</span><span lang="en-US">the</span><span lang="en-US"> parallel </span><span lang="en-US">dune-istel
</span><span lang="en-US">solver:</span> <br>
</p>
<p style="margin-bottom: 0cm; line-height: 100%">The <span lang="en-US">OwnerOverlapCopyCommunication
</span><span lang="en-US">can take an IndexInfoFromGrid object, </span><span lang="en-US">which I
</span><span lang="en-US">probably </span><span lang="en-US">need? </span><span lang="en-US">How d</span><span lang="en-US">id I get all the
</span><span lang="en-US">i</span><span lang="en-US">ndex </span><span lang="en-US">s</span><span lang="en-US">et</span><span lang="en-US">s</span><span lang="en-US"> for that from the grid or do I need to set something up by hand? Are there any example codes
about how to deal with remote matrices</span><span lang="en-US">? <br>
</span></p>
<p style="margin-bottom: 0cm; line-height: 100%"><span lang="en-US">Regards Ruth<br>
</span></p>
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