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cache mesh cell_sizes #5317

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cache mesh cell_sizes #5317

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cached until
leo-collins Aug 3, 2026
4642e22
warn
leo-collins Aug 3, 2026
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11 changes: 6 additions & 5 deletions firedrake/mesh.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2447,7 +2447,7 @@ def coordinates(self, value):

raise AttributeError(message)

@cached_property
@cached_property_until(lambda self: self.coordinates.dat.dat_version)
def cell_sizes(self):
"""A :class:`~.Function` in the :math:`P^1` space containing the local mesh size.

Expand All @@ -2463,10 +2463,11 @@ def clear_cell_sizes(self):

Use this if you move the mesh.
"""
try:
del self.cell_size
except AttributeError:
pass
warnings.warn(
"`clear_cell_sizes` is deprecated and will be removed in a future release. "
"The `cell_sizes` attribute is cleared automatically when mesh coordinates change. ",
FutureWarning,
)

@property
def tolerance(self):
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