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Warn users of increased recombine_submeshes memory demand. #4881

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pp-mo merged 2 commits into from
Jul 29, 2022
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Warn users of increased recombine_submeshes memory demand. #4881

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Warn users of increased recombine_submeshes memory demand.
trexfeathers Jul 28, 2022
4ffc94d
Clearer what's new entry.
trexfeathers Jul 29, 2022
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8 changes: 6 additions & 2 deletions docs/src/whatsnew/latest.rst
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Expand Up @@ -145,8 +145,8 @@ This document explains the changes made to Iris for this release
code that explicitly checks the calendar attribute. (:pull:`4847`)


🚀 Performance Enhancements
===========================
🚀 Performance
==============

#. `@wjbenfold`_ added caching to the calculation of the points array in a
:class:`~iris.coords.DimCoord` created using
Expand All @@ -166,6 +166,10 @@ This document explains the changes made to Iris for this release
#. `@wjbenfold`_ improved the speed of linear interpolation using
:meth:`iris.analysis.trajectory.interpolate` (:pull:`4366`)

#. NumPy ``v1.23`` behaviour changes mean that
:func:`iris.experimental.ugrid.utils.recombine_submeshes` now uses ~3x as
much memory; testing shows a ~16-million point mesh will now use ~600MB.
Investigated by `@pp-mo` and `@trexfeathers`. (:issue:`4845`)


🔥 Deprecations
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