This is the release note of v5.3.0. See here for the complete list of solved issues and merged PRs.

New Features

• Add NCCL 2.4 functions (#2052)

Enhancements

• Use version interface in NCCL 2.3.4 (#2006)
• Fix vector handling (#2013)
• Avoid import numpy (#2054)
• Support Python scalars in iscomplexobj (#1993)

Performance Improvements

• Improve dictionary operation (#2039)

Bug Fixes

• Fix cupy.random.randint fail with size zero (#1981)
• Call free_all_blocks to free CUDA memory (#1987)
• Define __dealloc__ instead of __del__ for cdef-classes to fix memory leak (#2000)
• Fix NCCL version assignment for NCCL < 2.3.4 (#2012)
• Fix random generator seed type (#2041)

Code Fixes

• Remove duplicate declaration of cudaMalloc (#2037)

Documentation

• Add cupy-cuda100 to README (#1980)
• Fix README image to use URL (#1982)
• Document NumPy 1.16 support (#1996)

Tests

• Fix test to support SciPy 1.12 (#1971)
• Fix test of assert_array_list_equal (#2003)
• Fix test with NumPy 1.16.1 (#2004)