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UWTN 2026-014: Setting Up Full Multigrid
- #21
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Aug 17, 2026
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UWTN 2026-014: Setting Up Full Multigrid
#21
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Commits on Aug 14, 2026
Draft UWTN 2026-014: Setting Up Full Multigrid
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Rewrite as an introduction to geometric multigrid in Underworld
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Show the coarse mesh's imprint on an annulus, and ship both figure scripts
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Commits on Aug 15, 2026
Report effort per unknown as a ratio, and say what the problem is
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Ship the script that produces the tables, and match the note to its output
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Median of three runs, one decimal place, and say the trend is superlinear
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Report cycles per velocity solve, which is the like-for-like count
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Commits on Aug 16, 2026
Measure each configuration in its own process, and stop truncating GAMG
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Re-measure against a correctly configured GAMG, and re-interpret
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Read the note through for coherence after the re-interpretation
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Banner: the three levels a refinement=2 mesh carries
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Measure the concentrated-viscosity case, and let the figure carry it
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Alt text describes the figure, not the caption
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Mark UWTN 2026-014 published, dated 2026-08-17
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Commits on Aug 17, 2026
One section for the comparison, so the heading is answered rather than contradicted
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