This is the release note of v11.0.0a2 See here for the complete list of solved issues and merged PRs.

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Highlights

Improved NumPy functions coverage (#6078)

As series of NumPy routines have been proposed as a good-first-issue and as a result, an increasing number of contributors have sent pull requests to help increase the number of available APIs. An issue tracker with the currently implemented issues is available at #6078.

Initial support for cupy.typing (#6251)

An API equivalent to numpy.typing to allow the introduction of data types in CuPy and user codes has been added.

Support for CUDA 11.6 (#6349)

Initial support for CUDA 11.6 has been added as of this release. However, binary wheels are not yet distributed and users are expected to build CuPy from source meanwhile.

Support for ROCm 5.0 (#6466)

Initial support for ROCm 5.0 has been added as of this release. However, binary wheels are not yet distributed and users are expected to build CuPy from source meanwhile.

Changes without compatibility

Drop support for ROCm 4.0 (#6420)

CuPy v11 will drop support for ROCm 4.0. We recommend users to use ROCm 4.2/4.3 instead.

Changes

New Features

• Add cupy.isneginf and cupy.isposinf (#6089)
• Add cupy.typing (#6251)
• Add asarray_chkfinite API. (#6275)
• Add Box-Cox transformations to cupyx.scipy.special (#6302)
• Use CUDA's log1p for cupyx.scipy.special.log1p (#6315)
• Add special functions from the CUDA Math API (#6317)
• Add beta functions to cupyx.scipy.special (#6318)
• Add cupy.union1d API. (#6357)
• Add cupy.float_power (#6371)
• Add cupy.intersect1d API. (#6402)
• Add cupy.setdiff1d api. (#6433)
• Add cupy.format_float_scientific API (#6474)

Enhancements

• First step of mypy introduction (#4955)
• Fix CI failure to support SciPy 1.8.0 (#6249)
• implement overwrite_input in cupy.{percentile,quantile} (#6298)
• avoid DeprecationWarning from SciPy 1.8 (cupyx.scipy.sparse) (#6321)
• Support NumPy 1.22 (#6323)
• Remove batched QR solver's experimental mark (#6327)
• Make scipy.special ufuncs work with CuPy inputs (#6341)
• Fix thrust related build issue with CUDA 11.6 (#6346)
• Support CUDA 11.6 (#6349)
• Fix CI failure to support SciPy 1.8.0 (#6362)
• Fix type annotations in installer (#6382)
• Add __cupy_get_ndarray__ dunder method to transform objects to arrays' (#6414)
• Bump Jitify version to fix memory leak (#6430)
• Support cuSPARSELt 0.2.0 (repost) (#6436)
• Support ROCm 5.0 (#6466)
• Warn if unexpectedlly failed to detect device count in cupy.show_config() (#6472)
• Fix verbose LOBPCG for SciPy 1.8 (#6388)

Performance Improvements

• Reduce memory usage in cupy.sort (#6392)

Bug Fixes

• Fix JIT to support notebook environment (#6329)
• Fix cupyx.ndimage.spline_filter1d for HIP (#6406)
• Fix cupy.nan_to_num (#6408)
• Fix cupyx.special.gammainc, lpmv and sph_harm for hip (#6409)
• Fix boolean views for HIP (#6412)
• Fix reduction contiguous size calculation (#6457)

Code Fixes

• Remove global use_hip flag in setup (#6391)
• Hide private names in cupyx.scipy.linalg (#6449)
• Hide private names in cupyx.scipy.ndimage (#6450)
• Hide private names in cupyx.scipy.signal (#6451)
• Hide private names in cupyx.scipy.sparse (#6454)
• Hide private names in cupyx.scipy.stats (#6456)

Documentation

• Use cupy.__version__ instead of pkg_resources (#6332)
• Tentatively pin intersphinx to SciPy 1.7.1 docs (#6440)
• Revert "Tentatively pin intersphinx to SciPy 1.7.1 docs" (#6479)

Installation

• Avoid monkeypatching distutils (#6273)
• Eliminate unnecessary configuration pass in setup (#6389)
• Remove CUPY_SETUP_ENABLE_THRUST=0 environment variable (#6390)
• Drop support for ROCm 4.0 (#6420)
• Bump version to v11.0.0a2 (#6501)

Tests

• CI: allow discarding docker image cache manually (#6269)
• Add slow tests for stable branch (#6340)
• Parameterize library installer tests (#6343)
• Fix tests for eigh() for CUDA 11.6 (#6347)
• Avoid empty notification message for scheduled tests (#6363)
• Support SciPy 1.8 (#6365)
• Add cupy.testing.installed (#6381)
• Mark XFAIL for SciPy 1.8 release candidate (#6385)
• CI: Bump ROCm version from 4.3 to 4.3.1 (#6415)
• CI: build docs in parallel (#6416)
• CI: Add HEAD tests for stable branch (#6423)
• CI: Use default schema/matrix path in generate.py (#6424)
• Skip hfft related tests in HIP (#6427)
• CI: Manage test tags in yaml (#6429)
• CI: coverage in reST (#6445)
• CI: fix NCCL 2.10 unit test not covered (#6448)
• CI: Fix CUDA 11.6 driver update steps (#6467)
• Ignore warnings from Optuna 3.0 pre-releases (#6470)
• Fix failing tests in ROCm (#6482)

Others

• CI: allow specifying special skip tag (#6468)

Contributors

The CuPy Team would like to thank all those who contributed to this release!

@amanchhaparia @anaruse @asi1024 @emcastillo @grlee77 @IvanYashchuk @khushi-411 @kmaehashi @pri1311 @saswatpp @takagi