Kudos to Josh Warner for getting this patch into NumPy so quickly!
---------- Forwarded message ----------
From: GitHub
Date: Sun, May 19, 2013 at 9:50 PM
Subject: [Numpy-svn] [numpy/numpy] 246c06: ENH: improved, faster
algorithm for array padding
Branch: refs/heads/master
Home: https://github.com/numpy/numpy
Commit: 246c06d2475718ec36ba193494444464e497c69a
https://github.com/numpy/numpy/commit/246c06d2475718ec36ba193494444464e497c6...
Author: Josh Warner (Mac)
Date: 2013-05-19 (Sun, 19 May 2013)
Changed paths:
M doc/release/1.8.0-notes.rst
M numpy/lib/arraypad.py
M numpy/lib/tests/test_arraypad.py
Log Message:
-----------
ENH: improved, faster algorithm for array padding
New padding method which scales much better with dimensionality.
This new implementation is fully vectorized, builds each abstracted
n-dimensional padding block in a single step, and takes advantage
of separability. The API is completely preserved, and the old
algorithm is used if a vector function is input for `mode`.
The new algorithm is faster for all tested combinations of inputs,
and scales much better with dimensionality. Execution time reductions
from ~25% for small rank 1 arrays to >99% for rank 4+ arrays observed.
Commit: 7d188bf1c9ac5bf7ee41e0794d59771802b345bf
https://github.com/numpy/numpy/commit/7d188bf1c9ac5bf7ee41e0794d59771802b345...
Author: Charles Harris
Date: 2013-05-19 (Sun, 19 May 2013)
Changed paths:
M doc/release/1.8.0-notes.rst
M numpy/lib/arraypad.py
M numpy/lib/tests/test_arraypad.py
Log Message:
-----------
Merge pull request #3329 from JDWarner/faster_arraypad
ENH: improved, faster algorithm for array padding
Compare: https://github.com/numpy/numpy/compare/5b28d185a494...7d188bf1c9ac