This is the release note of v10.0.0b2. See here for the complete list of solved issues and merged PRs.

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Highlights

Support for CUDA Python (#5638)

CuPy is one of the first libraries providing support for the newly released CUDA Python bindings. To try it, install cuda-python manually and set the CUPY_USE_CUDA_PYTHON=1 environment variable when building CuPy as written in the documentation.

Support for AMD ROCm 4.3

Support for ROCm 4.3 has been added in the latest release and binary wheels are provided as well. Note that there is currently an issue with ROCm 4.3 that prevents it from running in several environments. The current workaround is to set the LLVM_PATH variable to the llvm folder included in ROCm 4.3 installation (e.g., export LLVM_PATH=/opt/rocm-4.3/llvm).

Announcements

Removal of Alpha/Beta/RC Wheels from PyPI

• As per the discussion in #5671, we will stop uploading pre-release binary wheels to PyPI for the health of the ecosystem. Pre-release wheels can now be downloaded from the assets section of each GitHub release page (e.g., pip install cupy-cudaXXX -f https://github.com/cupy/cupy/releases/tag/v10.0.0b2) . Note that the sdist package is available in PyPI for all versions.

• We are also going to remove outdated (v8.0.0rc1 or earlier) pre-release binary wheels from PyPI on September 20th. See #5667 for details.

Changes

New Features

• Support batched QR solver (#5583)
• Add cupyx.scipy.sparse.linalg.minres (#5585)
• Add Log Series distribution to cupy.random.Generator (#5618)
• Add Power distribution to cupy.random.Generator (#5624)
• Add support for CUDA Python (#5638)
• Add Chi-square distribution to cupy.random.Generator (#5645)
• Add Dirichlet distribution to cupy.random.Generator (#5648)
• Add F distribution to cupy.random.Generator (#5655)

Enhancements

• Add ncclAvg and ncclBfloat16 for NCCL (#5545)
• Add new eigensolvers from rocSOLVER (#5555)
• Add support for array input in beta distribution of cupy.random.Generator (#5573)
• Release the GIL for several NCCL ops (#5574)
• Allow to compile using PTX with an envvar (#5622)
• Show CUDA Python version (#5651)
• Fix version check for new ROCm version definition (#5657)
• Rest of version check fix for new ROCm version definition (#5660)
• Add ROCm 4.3 in duplicate detection (#5669)

Bug Fixes

• Fix compute capability check (#5600)
• Fix FFT convolve for shapes containing 1 (#5609)
• Fix squareness checks (#5642)
• Fix unique for empty array (#5654)

Code Fixes

• Add batch_identity helper (#5614)
• Remove unnecessary comments (#5631)

Documentation

• Update Sphinx to 4.1.2 (#5612)
• Fix random docstring (#5628)
• Support ROCm v4.3 in document (#5633)
• __array_function__ feature by default (#5644)

Tests

• Fix skipTest in test_decomp_lu (#5593)
• Mark lsmr tests xfail for CSR matrices on HIP (#5597)
• Increase test timeout (#5601)
• Fix cubic for_all_dtypes_combination tests (#5629)
• Add CI for ROCm 4.3 (#5630)
• Reload GPG key for ROCm 4.2 test (#5636)
• Fix branch name of cuda-python (#5650)
• Add a workaround for ROCm 4.3.0 for testing (#5662)

Others

• Add cupy-cuda114 to duplicate detection (#5621)
• Bump version to v10.0.0b2 (#5679)

Contributors

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

@hauntsaninja @leofang @povinsahu1909 @yashasvimisra2798