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Improve MALI performance for configurations with dynamic Greenland ice sheet #7926

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jonbob merged 2 commits intoE3SM-Project:masterfrom
stephenprice:stephenprice/glc/update-albany-solver-settings
Jan 27, 2026
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Improve MALI performance for configurations with dynamic Greenland ice sheet #7926
jonbob merged 2 commits intoE3SM-Project:masterfrom
stephenprice:stephenprice/glc/update-albany-solver-settings

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@stephenprice
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Update pointer for 1-to-10km initial condition file, where the updated file (date stamp 20251209) has had icebergs removed in order to improve convergence on the initial time step (no other changes relative to previous file with date stamp 20240513). Update yaml files (Albany solver settings) for 1-to-10km and 4-to-40km init. cond. files for improved convergence.

Minor updates to albany solver settings (for Greenland only) to improve
convergence; update reference for default 1-to-10km init. cond. grid to
newer one with improved convergence on initial time step (thickness
field has iceberges removed)
@stephenprice stephenprice added MPAS-albany-landice Concerning the MPAS-Albany land ice model input file Concerning input files for any model labels Dec 9, 2025
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@mperego mperego left a comment

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Looks good to me. Thanks!

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@trhille trhille left a comment

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Approved by inspection.

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@matthewhoffman matthewhoffman left a comment

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Looks good to me. I confirmed that the new input file is indeed on inputdata.

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rljacob commented Dec 18, 2025

Is this answer changing?

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@rljacob -- Yes, in the sense that existing test baselines would need to be updated. However, that is also going to happen soon anyway as a result of PR 7892, which will require generation of new baselines. I can add the non-BFB label here if you'd like.

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rljacob commented Dec 18, 2025

Yes please do. Also, is this something you want in the 3.1 tag?

@stephenprice stephenprice added the non-BFB PR makes roundoff changes to answers. label Dec 18, 2025
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rljacob commented Jan 8, 2026

@stephenprice do you want this for 3.1 ?

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@rljacob -- Sorry for the delay in responding. This is not necessary for 3.1 as full support for Greenland configurations is not part of 3.1. Thanks.

jonbob added a commit that referenced this pull request Jan 26, 2026
…xt (PR #7926)

Improve MALI performance for configurations with dynamic Greenland ice sheet

Update pointer for 1-to-10km initial condition file, where the updated
file (date stamp 20251209) has had icebergs removed in order to improve
convergence on the initial time step (no other changes relative to
previous file with date stamp 20240513). Update yaml files (Albany
solver settings) for 1-to-10km and 4-to-40km init. cond. files for
improved convergence.

[non-BFB] only for configurations with MALI
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jonbob commented Jan 26, 2026

Passes:

  • SMS_D_Ld1.ne30pg2_r05_IcoswISC30E3r5.WCYCL1850.chrysalis_intel.allactive-wcprod
  • e3sm_landice_developer on chrysalis using gnu with expected DIFFs

merged to next

@jonbob jonbob merged commit 4e3c2be into E3SM-Project:master Jan 27, 2026
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jonbob commented Jan 27, 2026

merged to master and expected DIFFs blessed

@stephenprice stephenprice deleted the stephenprice/glc/update-albany-solver-settings branch March 2, 2026 18:26
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6 participants