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| -rw-r--r-- | doc/release/1.16.0-notes.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/release/1.16.0-notes.rst b/doc/release/1.16.0-notes.rst index cc69b245d..f2c8f8dc2 100644 --- a/doc/release/1.16.0-notes.rst +++ b/doc/release/1.16.0-notes.rst @@ -104,6 +104,15 @@ content to be read after ``skiprows``, as in `numpy.genfromtxt`. Improvements ============ +no-copy pickling of numpy arrays +-------------------------------- +Up to protocol 4, numpy array pickling created 2 spurious copies of the data +being serlialized. +With pickle protocol 5, and the ``PickleBuffer`` API, a large variety of numpy +arrays can now be serialized without any copy using out-of-band buffers, +and with one less copy using in-band buffers. This results, for large arrays, +in an up to 66% drop in peak memory usage. + build shell independence ------------------------ NumPy builds should no longer interact with the host machine |