peclet::amr::PressureStagePolicy Struct Reference

Which stage the distributed pressure ladder uses where its in-place lift blocks (docs/amr_mg_depth.md §5.6, WO4b; docs/amr_mg_core_boundary.md §11.1, §9.6, §9.7). More...

#include <mg_predict.hpp>

Public Attributes
bool	enabled = true
	false: the replicated tail only (WO4)
int	minExtent = 4
	Core's economic trigger / extent cap.
Index	maxBlockCells = -1
	Core's bound on a target block's cells.

Detailed Description

Which stage the distributed pressure ladder uses where its in-place lift blocks (docs/amr_mg_depth.md §5.6, WO4b; docs/amr_mg_core_boundary.md §11.1, §9.6, §9.7).

With enabled — the DEFAULT since 2026-09-24, on timings that measured it no slower anywhere and up to 1.9x faster (amr_mg_depth.md WO4b) — core's chooseStageTarget chooses between a sibling merge, a repartition and the replicated tail. With enabled == false every stage is the replicated tail (WO4), kept as the reference and an ablation. DistributedFlowMultigrid::StagePolicy is this type, and predictPressureLadder takes it, so the prediction and the built ladder read the same policy.

Definition at line 48 of file mg_predict.hpp.

Member Data Documentation

enabled

bool peclet::amr::PressureStagePolicy::enabled = true

false: the replicated tail only (WO4)

Definition at line 49 of file mg_predict.hpp.

minExtent

int peclet::amr::PressureStagePolicy::minExtent = 4

Core's economic trigger / extent cap.

4, flow's trigger verbatim (§9.7) — INERT here, because the policy is consulted only where the §6.2 lift has already stopped.

Definition at line 52 of file mg_predict.hpp.

maxBlockCells

Index peclet::amr::PressureStagePolicy::maxBlockCells = -1

Core's bound on a target block's cells.

NEGATIVE (the default) = derive it: the LEAF count of the largest finest-level block (§9.6 — the rank's real unknowns, not its fine-cell count). 0 = no repartition (flow's byte-identical mode). A stage's continued ladder inherits the resolved value, since its own level 0 is not the finest level.

Definition at line 57 of file mg_predict.hpp.

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The documentation for this struct was generated from the following file:

• mg_predict.hpp