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WIP: Restart W/ Rank Change #3253

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93e26a8
First start. Issues with SL now.
AMLattanzi Jun 3, 2026
466e470
Merge branch 'development' into RestartRankChange
asalmgren Jun 4, 2026
a1c26dc
Merge branch 'development' into RestartRankChange
AMLattanzi Jun 4, 2026
facda06
Merge branch 'development' into RestartRankChange
AMLattanzi Jun 4, 2026
2345637
Merge branch 'development' into RestartRankChange
AMLattanzi Jun 5, 2026
6db8536
Merge branch 'development' into RestartRankChange
AMLattanzi Jun 5, 2026
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3 changes: 3 additions & 0 deletions Source/ERF.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2195,6 +2195,9 @@ ERF::restart ()

ReadCheckpointFile();

// Force regrid on level 0 if more procs than boxes are requested
regrid_level_0_on_restart = ( regrid_level_0_on_restart ||
grids[0].size() < ParallelDescriptor::NProcs() );
if (regrid_level_0_on_restart) {
//
// Coarsening before we split the grids ensures that each resulting
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8 changes: 8 additions & 0 deletions Source/ERF_MakeNewArrays.cpp
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Expand Up @@ -801,6 +801,10 @@ ERF::remake_zphys (int lev, std::unique_ptr<MultiFab>& temp_zphys_nd)

std::swap(temp_zphys_nd, z_phys_nd[lev]);
} // lev > 0
else {
temp_zphys_nd->ParallelCopy(*z_phys_nd[lev], 0, 0, 1, z_phys_nd[lev]->nGrowVect(), z_phys_nd[lev]->nGrowVect());
std::swap(temp_zphys_nd, z_phys_nd[lev]);
}
} else {
if (lev > 0)
{
Expand All @@ -819,6 +823,10 @@ ERF::remake_zphys (int lev, std::unique_ptr<MultiFab>& temp_zphys_nd)

std::swap(temp_zphys_nd, z_phys_nd[lev]);
} // lev > 0
else {
temp_zphys_nd->ParallelCopy(*z_phys_nd[lev], 0, 0, 1, z_phys_nd[lev]->nGrowVect(), z_phys_nd[lev]->nGrowVect());
std::swap(temp_zphys_nd, z_phys_nd[lev]);
}
}

if (solverChoice.terrain_type == TerrainType::ImmersedForcing ||
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2 changes: 1 addition & 1 deletion Source/Utils/ERF_TerrainMetrics.cpp
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Expand Up @@ -639,7 +639,7 @@ make_zcc (const Geometry& geom,
Array4<Real > z_cc = z_phys_cc.array(mfi);
ParallelFor(gbx, [=] AMREX_GPU_DEVICE(int i, int j, int k) noexcept {
z_cc(i, j, k) = Real(.125) * ( z_nd(i,j,k ) + z_nd(i+1,j,k ) + z_nd(i,j+1,k ) + z_nd(i+1,j+1,k )
+z_nd(i,j,k+1) + z_nd(i+1,j,k+1) + z_nd(i,j+1,k+1) + z_nd(i+1,j+1,k+1) );
+ z_nd(i,j,k+1) + z_nd(i+1,j,k+1) + z_nd(i,j+1,k+1) + z_nd(i+1,j+1,k+1) );
});
}
z_phys_cc.FillBoundary(geom.periodicity());
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