Upgrade Guide¶
This is a list of changes introduced in each release that users should be aware of when migrating from older versions. Most changes are carefully designed not to break existing code; however changes that may possibly break them are highlighted with a box.
CuPy v2¶
Changed Behavior of count_nonzero Function¶
For performance reasons, cupy.count_nonzero()
has been changed to return zero-dimensional ndarray
instead of int when axis=None.
See the discussion in #154 for more details.