v7.0.0b4

This is the release note of v7.0.0b4. See here for the complete list of solved issues and merged PRs.

New Features

• Add cupy.cross (#2366, thanks @UmashankarTriforce!)
• Add cupy.may_share_memory (#2417)
• Add occupancy driver APIs (#2424, thanks @leofang!)
• Add scatter_max and scatter_min (#2427)
• Support texture memory in RawKernel (#2432, thanks @leofang!)

Enhancements

• Extend CuDNNError to have more debugging information (#2404)
• Add complex dtype support to cupy.std and cupy.var (#2411, thanks @grlee77!)
• Support complex dtypes in cupy.linalg.inv() (#2468, thanks @leofang!)

Performance Improvements

• Use CUB to speed up sum/min/max (#2090)
• Avoid creating empty numpy ndarray in common_type (#2307)
• cupy.linalg.norm: update docstring and improve performance for ord=2 cases (#2479, thanks @grlee77!)

Bug Fixes

• Fix bug in coosort (#2410, thanks @econtal!)
• Fix multithreading issue in cupy.cuda.cufft.get_current_plan() (#2435, thanks @leofang!)
• Normalize hidden layer strides in cuDNN RNN (#2442)
• Copy inputs in ufunc if they share the same memory with outputs (#2460)

Code Fixes

• Fix cuSOLVER devInfo dtype in inv and unify how those are specified (#2454)
• Fix code convention of statistics routines (#2459)
• Remove unnecessary ndarray private methods (#2465)

Documentation

• Document CUTENSOR_PATH environment variable (#2386)
• Add appropriate pointer types in Cython to the contribute guide (#2455, thanks @leofang!)
• Fix invalid escape sequence (#2470)

Installation

• Fix NumPy version in Dockerfile (#2430)

Examples

• Broadcast ValueError for n-clusters > 2 in k-means example (#2453, thanks @casheera!)

Tests

• Simplify cupy.fuse tests (#2339)
• Revert "Skip some ndarray-elementwise-op tests as temporary fix" (#2383)
• Drop Python 2 Travis CI configuration (#2428)
• Drop Python 2 PFN CI configuration (#2429)
• Change URL to place test assets (#2434)
• Add NumPy 1.17.1 to skip list of 0-length ifft test (#2441)
• Remove unnecessary skip in 0-length ifft test (#2443)
• Fix TestDLTensorMemory.test_delete (#2451)
• Fix data race in advanced indexing test (#2472)
• Fix pytest 5.x version errors (#2473)
• Remove global state from tests (#2475, thanks @leofang!)