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<p class="MsoNormal">Bummer.<o:p></o:p></p>
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<p class="MsoNormal">Matt - Never is a very strong word. Don’t underestimate the power of mappings and/or AMR. Also, sparse grid techniques haven’t (yet) proven to be particularly useful for kinetic problems.<o:p></o:p></p>
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<p class="MsoNormal">Thanks for the quick response.<o:p></o:p></p>
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<p class="MsoNormal">j-<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">-.-- -.-- --..<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Jeffrey A. F. Hittinger<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Center for Applied Scientific Computing<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Lawrence Livermore National Laboratory<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Office: (925) 422-0993<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">FAX: (925) 423-2993</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Matthew Knepley <knepley@gmail.com><br>
<b>Date: </b>Tuesday, October 17, 2017 at 11:42 AM<br>
<b>To: </b>Barry Smith <bsmith@mcs.anl.gov><br>
<b>Cc: </b>Undisclosed recipients <hittinger1@llnl.gov>, "petsc-users@mcs.anl.gov" <petsc-users@mcs.anl.gov><br>
<b>Subject: </b>Re: [petsc-users] High-dimensional DMDA<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in">On Tue, Oct 17, 2017 at 2:32 PM, Barry Smith <<a href="mailto:bsmith@mcs.anl.gov" target="_blank">bsmith@mcs.anl.gov</a>> wrote:<o:p></o:p></p>
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No and it is highly unlikely to appear (the 3d code is already too complicated and we tried to write a dimension independent version but that failed)<br>
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But note that by using a dof argument > 1 one can handle some "4d" problems so long as one does no parallelize in the 4th dimension.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">History: We did have a version for arbitrary dimension called ADDA written by a student of David Keyes, that exists<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">in the bowels of Git. We are unlikely to replicate it because regular grids in high dimension never seem like the right<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">thing to do.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> Thanks,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> Matt<o:p></o:p></p>
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<span class="hoenzb"> Barry</span></span><o:p></o:p></p>
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> On Oct 17, 2017, at 1:15 PM, Hittinger, Jeffrey A. F. <<a href="mailto:hittinger1@llnl.gov">hittinger1@llnl.gov</a>> wrote:<br>
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> Quick question: is there a version of the DMDA structured grid interface that supports dimensions higher than 3?<br>
><br>
> j-<br>
> -.-- -.-- --..<br>
> Jeffrey A. F. Hittinger<br>
> Center for Applied Scientific Computing<br>
> Lawrence Livermore National Laboratory<br>
> Office: <a href="tel:%28925%29%20422-0993">(925) 422-0993</a><br>
> FAX: <a href="tel:%28925%29%20423-2993">(925) 423-2993</a><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">-- <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">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<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><a href="http://www.caam.rice.edu/~mk51/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><o:p></o:p></p>
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