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Fix poroelasticity fault solver #852

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Merged
merged 2 commits into from
Aug 15, 2025
Merged

Fix poroelasticity fault solver #852

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fa4cb7a
FIX: Use ML for displacement field preconditioner for poroelasticity …
baagaard-usgs Aug 15, 2025
e063192
Small tweaks to pressure gradient poroelasticity full-scale test.
baagaard-usgs Aug 15, 2025
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2 changes: 2 additions & 0 deletions libsrc/pylith/materials/Poroelasticity.cc
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Expand Up @@ -341,6 +341,8 @@ pylith::materials::Poroelasticity::getSolverDefaults(const bool isParallel,

options->add("-dm_reorder_section");
options->add("-dm_reorder_section_type", "cohesive");
options->add("-fieldsplit_displacement_pc_type", "ml");
options->add("-fieldsplit_displacement_ksp_type", "gmres");
options->add("-fieldsplit_displacement_mg_fine_pc_type", "vpbjacobi");

if (_useStateVars) {
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2 changes: 1 addition & 1 deletion tests/fullscale/poroelasticity/faults-2d/pressuregradient.cfg
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Expand Up @@ -22,7 +22,7 @@ features = [
[pylithapp.problem]
initial_dt = 10.0*year
start_time = -10.0*year
end_time = 60.0*year
end_time = 40.0*year


# ----------------------------------------------------------------------
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3 changes: 1 addition & 2 deletions tests/fullscale/poroelasticity/faults-2d/pylithapp.cfg
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Expand Up @@ -116,12 +116,11 @@ observers.observer.data_fields = [slip, traction_change, lagrange_multiplier_fau
[pylithapp.problem.petsc_defaults]
solver = True
testing = True
monitors = True
monitors = False

[pylithapp.petsc]
ksp_rtol = 1.0e-15
ksp_atol = 1.0e-13
snes_atol = 1.0e-12

snes_max_it = 1

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