Explicit streams in device_buffer #775
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rongou
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) In preparation for rapidsai/rmm#775, this PR has many changes to ensure streams on which device_buffers are allocated and copied are explicit. As a consequence, this PR also finds and fixes many places where buffers were copied that should have been moved. In addition, it adds copy constructors that take an optional stream to all `cudf::scalar` classes. This can and should be merged before rapidsai/rmm#775 to ensure no breakage of the build by that PR. Authors: - Mark Harris (https://github.com/harrism) Approvers: - Ram (Ramakrishna Prabhu) (https://github.com/rgsl888prabhu) - Devavret Makkar (https://github.com/devavret) - Jason Lowe (https://github.com/jlowe) - Nghia Truong (https://github.com/ttnghia) URL: #8280
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galipremsagar
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Removes default stream arguments from
rmm::device_buffer. Now copy construction requires a stream argument (default copy ctor deleted), and copy assignment is disallowed (operator deleted). Move construction and assignment are still supported, and move assignment still use the most recently used stream for deallocating any previous data.Also improves device_buffer tests (implements TODOs in code).
I don't think this should be merged until RAPIDS dependent libraries are ready for it. I have a libcudf PR in progress for this.
Fixes #418