NVIDIA/cccl python-0.6.0

CCCL Python Libraries v0.6.0

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These are the release notes for the cuda-cccl Python package version 0.6.0, dated April 9th, 2026. The previous release was v0.5.1.

cuda-cccl is in "experimental" status, meaning that its API and feature set can change quite rapidly.

Installation

Please refer to the install instructions here

API breaking changes

• cuda.coop refactored to use maker factory functions (#7713)

Features

• ShuffleIterator — New iterator type added to cuda.compute (#7721)
• max_segment_size guarantee — Exposed in the public API (#8284)
• LTO-IR support — Can now directly pass LTO-IR for custom operators (#7625)
• Numba-optional install — Added a path to install cuda.compute without Numba as a dependency (#7633)

Performance

• Faster TransformIterator construction (#7660)

Bug Fixes

• Fix faulty pointer arithmetic in CUB dispatch (#7940)
• Fix merge sort returning negative temp storage bytes (#7916)
• Fix histogram build object caching when using privatized smem strategy (#7657)