This is the release note of v5.1.0. See here for the complete list of solved issues and merged PRs.

New Features

• Support comparison operators for complex numbers (#1820, thanks @themightyoarfish!)
• Add cuDNN RNN high-level API (#1821)
• Add cuDNN softmax and pooling interface (#1752, #1753)
• Add cuDNN batch normalization interface (#1784)

Enhancements

• Add float16 and float64 support for scatter_add (#1756, thanks @uchida!, #1763)
• Code enhancements
  • Rename _make_rnn_workspace function (#1841)
  • Make a helper function to get the number of layers in RNN (#1844)
  • Remove code for CUDA 7.0 / 7.5 and cuDNN v4 (#1778)
  • Remove unnecessary intermediate data in FP16 atomicAdd (#1777)
  • Fix DropoutStates interface to avoid using cuDNN handle (#1796)
  • Assume CUDA v8 in cuSPARSE/cuSOLVER check (#1782)

Bug Fixes

• Fix error in typecast from fp16 to complex dtype in cupy.fuse (#1801)
• Fix invalid memory access during reduction whose output is large to exceed 32-bit (#1810)
• Fix incorrect cast in element-wise op for float array and complex scalar (#1803)

Test

• Workaround for test failure with Python 3.4 + SciPy 0.x + NumPy 0.15 (#1738)
• Fix userspace kernel test failure in Windows (#1761)
• Fix PendingDeprecationWarning when running test against NumPy 1.15 (#1762)
• Support skipping tests decorated by condition or parametize (#1767)
• Fix test failure of binomial distribution in Windows (#1851)

Documentation

• Add code of conduct (#1831)
• Improve comparison table (#1750)
• Add requirements to build documentation on RTD (#1768)
• Add policy on compatibility of random sampling (#1771)
• Fix description of CUDA_PATH environment variable (#1783)
• Indicate alias in comparison table (#1794)
• Fix English in ndarray.nbytes documentation (#1798)
• Add note about cupy.random.{get_set}_state (#1814)
• Enable intersphinx to cupyx module (#1816, thanks @grafi-tt!)
• Add 10.0 to supported CUDA versions (#1826)
• Add docs about conversion from/to cupy ndarray and sparse (#1830)
• Add v7.3 and v7.4 to supported cuDNN versions (#1825)