cupy 2.0.0rc1

v2.0.0rc1

on Python PyPI

This is the release of CuPy v2.0.0rc1. See here for the complete list of solved issues and merged PRs.

Changes that break compatibility

• Change the default value of the order argument of copy from ’C’ to ’K’ (#159)
• Add order and subok arguments to array (#167). It breaks the compatibility of positional arguments.

New features

• Complex numbers (#232)
• Memory hook (#264). It can be used to observe the memory allocation/deallocation events.
• New functions
  • Complex routines: angle, conj, imag, real (#232)
  • einsum (#199, thanks @fukatani!)
  • Linear algebra: linalg.solve (#207), linalg.tensorsolve (#215), linalg.inv (#441), linalg.pinv (#459)
  • Random numbers: random.shuffle (#216, thanks @KotaroSetoyama!)
  • Sorting: partition (#270)
• New features in sparse matrices
  • Support dia_matrix (#313, #321, #320, #450)
  • Sparse matrix creation methods: eye (#399), spdiags (#388) and identity (#358)
  • csr_matrix and csc_matrix are improved: __mul__ (#239), __rmul__ (#300), __getitem__ (#240, #301, #302), dot (#351, #352)
  • Initializers of csr_matrix, csc_matrix, and coo_matrix support shape argument (#316, #375)
  • Sparse matrices can have duplicated elements (#326, #371)
  • order argument in toarray method of csc and csr (#311)
  • __pow__ (#359)
  • Conversion from a dense array to a sparse matrix (#335)
  • Support conversion from scipy.sparse matrix to cupy.sparse (#370)
• Added supports of new libraries
  • NumPy 1.13 (#347)
  • CUDA9 support (#353, thanks @anaruse!)
  • cuDNN7 support (#362, thanks @anaruse!)
  • NCCL2 support (#363, thanks @anaruse!)
• argsort for arrays of rank two or more (#288)
• Fix race-condition on memory pool (#382)
• Implemented copy option of array conversion methods and wrote tests (#408)
• Enable saving CUDA source with environment variable (#415)
• Basic support of CUDA unified memory (#447)
• Use original function name as fusion kernel name (#448)
• Support replace=False in random.choice (#453)
• Add a sync option to time_range (#474, thanks @anaruse!)

Bug fixes

• Fix bug of empty coo_matrix (#328)
• Fix default behavior of methods in spmatrix (#356)
• Made dummy implementation to prevent infinite loop (#364)
• Avoid to call python methods in __dealloc__(), use __del__() instead. (#381)
• Fix race-condition on memory pool (#382)
• Fix view when the itemsize of the dtype changes (#406, thanks @boeddeker!)
• Use double backslash in str literal (#418)
• Improved pow test (#421)
• Use randint instead of random_integer, which is deprecated (#425)
• Fix diagonal (#428, thanks @fukatani!)
• Use six.assertRegex (#432)
• Fix for numpy1.13 (#445)
• Fix tocsc behavior for an empty dia matrix (#451)

Improvements

• Tell the memory size when cudaErrorMemoryAllocation occurred (#314)
• Simplify nogil (#164)
• Skip cross compile on setup.py develop to build faster (#309)
• Remove device memory allocation out of memory pool (#337)
• Avoid importing NumPy docstring (#355)
• Improve header handling (#367)
• Remove redundant code in cupy_thrust.cu (#369)
• Improve _tril() and _triu() with an ElementwiseKernel (#377)
• Remove unnecessary condition (#383)
• Add semicolons to the reduction kernel template (#386)
• Remove redundant transpose (#390)
• Fix usage about ElementwiseKernel (#391)
• Remove duplicated preamble definition. (#402)
• Fix cumsum (#414)
• Use AxisError to maintain compatibility to multiple versions of NumPy (#437)
• doc: Sort out navigation menu (#444)
• Improve tensordot_core (#465)
• Simplify flip (#468)
• Use None instead of set() to improve memory allocation performance (#475)

Installation

• Skip cross compile on setup.py develop to build faster (#309)
• Fix double declaration of tuple_less (#368)
• Made a cutomized version of sdist command to use cython (#446)

Documentation

• Fix a grammatical error in tutorial (#267)
• Add cupy.sparse reference (#299, #303)
• Cleanup README.md (#334)
• Hide source link for alien objects (#354)
• Avoid importing NumPy docstring (#355)
• Remove unsupported strides argument from docstring (#361)
• Fix matmul arguments (#384, thanks @hvy!)
• Add link to our contribution guide (#392)
• Update docstring of linalg.einsum (#405)
• Write docstring of A property and its test (#407)
• Use double backslash in str literal (#418)
• Fix typo in sparse.spdiags docstring. (#426)
• Remove "Edit on GitHub" link (#434)
• Reorganize navigation menu (#444)
• Clear doctest warnings (#455)
• Add documents of linalg (#456)
• Write docstring of sparse.issparse (#470)

Examples

• Conjugate Gradient (#94, thanks @KotaroSetoyama!)

Tests

• Example test (#297)
• Add test for cuda.cusolver_enabled flag (#374)
• Write tests for operators for sparse matrices (#401)
• Write docstring of A property and its test (#407)
• Fix test for random generator (#413)
• Fix cumsum test (#414)
• Add test for transpose when axes is not None (#420)
• Improved pow test (#421)
• Changed order argument for unknown order test as SciPy causes DeprecationWarning (#422)
• Add tests for asfptype (#423)
• Add assert_warns (#424)
• Use randint instead of random_integer that is deprecated (#425)
• Use six.assertRegex (#432)
• Show error message when an error occurs on example test (#433)
• Fix tests on Windows (#435)
• Fix tolerance of arithmetic tests (#443)
• Added test for __iter__ of csr_matrix (#449)
• Fix tocsc behavior for an empty dia matrix (#451)
• Fix test for tensorsolve (#454)
• Skip NumPy clip tests in Windows (#467)
• Fix typo in test function names (#394)

Others

• Configure flake8 to ignore the .git directory (#339)