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[BUG/ENH] RAMSES: Support non-Hilbert decomposition#5340

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cphyc wants to merge 1 commit intoyt-project:mainfrom
cphyc:RAMSES/support-other-domain-decomposition
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[BUG/ENH] RAMSES: Support non-Hilbert decomposition#5340
cphyc wants to merge 1 commit intoyt-project:mainfrom
cphyc:RAMSES/support-other-domain-decomposition

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@cphyc cphyc commented Dec 2, 2025

See ramses-organisation/ramses#72.

PR Summary

RAMSES has a well-hidden option to use a domain-decomposition strategy that isn't based on a Hilbert curve decomposition. This PR adds support for this case. Unfortunately, due to the rarity of this option, I don't have any dataset at hand to test it, but my colleagues (@matthiasglz) confirmed this fixed the issue.

@cphyc cphyc added bug code frontends Things related to specific frontends enhancement Making something better domain: astro frontend: ramses and removed code frontends Things related to specific frontends labels Dec 2, 2025
@cphyc cphyc force-pushed the RAMSES/support-other-domain-decomposition branch from 7fd150e to b1470f8 Compare December 2, 2025 17:10
@chrishavlin chrishavlin added this to the 4.4.3 milestone Dec 10, 2025
nbrucy pushed a commit to ramses-organisation/ramses that referenced this pull request Dec 19, 2025
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This PR fixes the issue #72 

Thanks to @cphyc for the help and for adapting Yt to add support on this
bisection decomposition (see yt-project/yt#5340)
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@chrishavlin chrishavlin left a comment

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Since this was confirmed to fix the issue upstream, I think we're good to merge.

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