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Dear PETSc team: For a project that I'm working on, I need to manually build a DMPlex. From studying the source code of the various APIs in which the plex is built from some supported file format, I get that the workflow is this: DMPlexSetChart()
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<div class="elementToProof" style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0);">
Dear PETSc team:<br>
<br>
For a project that I'm working on, I need to manually build a DMPlex.</div>
<div class="elementToProof" style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0);">
>From studying the source code of the various APIs in which the plex is built from some supported file format, I get that the workflow is this:</div>
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<br>
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<li style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0); list-style-type: "1) ";">
<div class="elementToProof" style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0);">
DMPlexSetChart() <-- Input nCells + nVerts</div>
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DMPlexSetConeSize() <-- Input ConeSize for each point in [0,nCells)</div>
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DMSetUp() – Allocates memory internally.</div>
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<div class="elementToProof" style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0);">
DMPlexGetCones() --> Gives you the memory onto which to write the cell connectivity.</div>
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*Write connectivity*</div>
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DMPlexReorderCell() <-- For each point in [0,nCells)</div>
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<br>
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<div class="elementToProof" style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0);">
I'm in a situation where the memory given by step (4) is available a-priori.</div>
<div class="elementToProof" style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0);">
I was hoping to skip steps 2, 3 , and 4 with something like a "DMPlexSetCones()", but such an API does not exist.</div>
<div class="elementToProof" style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0);">
My current workaround is to implement steps 2 through 4 as always and have double the memory allocated in the interim (my instance + DM's internal instance).</div>
<div class="elementToProof" style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0);">
I was thinking of looking for the name of the struct member and = it to my memory, but I can't overcome the flag check in DMSetUp() during later calls to DMPlexGetCones() or DMPlexGetTransitiveClosure().</div>
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<p style="line-height: normal; background-color: white; margin: 0px 0px 11px;"><span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: black;">Sincerely:</span></p>
<p style="line-height: normal; background-color: white; margin: 0px;"><span style="font-family: "Courier New", monospace; font-size: 14pt; color: red;"><b><u>J.A. Ferrand</u></b></span></p>
<p style="line-height: normal; background-color: white; margin: 0px;"><span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: black;">Embry-Riddle Aeronautical University - Daytona Beach - FL<br>
Ph.D. Candidate, Aerospace Engineering</span></p>
<p style="line-height: normal; background-color: white; margin: 0px;"><span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: black;">M.Sc. Aerospace Engineering</span></p>
<p style="line-height: normal; background-color: white; margin: 0px;"><span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: black;">B.Sc. Aerospace Engineering</span></p>
<p style="line-height: normal; background-color: white; margin: 0px;"><span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: black;">B.Sc. Computational Mathematics</span></p>
<p style="line-height: normal; background-color: white; margin: 0px;"><span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(0, 0, 0);"><br>
</span></p>
<p style="line-height: normal; background-color: white; margin: 0px;"><span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: black;"><u>Phone:</u> (386)-843-1829</span></p>
<p style="line-height: normal; background-color: white; margin: 0px;"><span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: black;"><u>Email(s):</u> ferranj2@my.erau.edu</span></p>
<p style="text-indent: 0.5in; line-height: normal; background-color: white; margin: 0px;">
<span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: black;"> jesus.ferrand@gmail.com</span></p>
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