[GitHub] [arrow] kkraus14 commented on issue #36103: [C++] Add device-specific synchronization API to Buffer

["kkraus14 (via GitHub)" <gi...@apache.org>]

kkraus14 commented on issue #36103:
URL: https://github.com/apache/arrow/issues/36103#issuecomment-1593435572

   I'm not sure if an event is the right thing for Buffers. In addition to being able to synchronize, device buffers are often managed in a stream ordered fashion. I.E. allocated and more importantly freed asynchronously from a CPU perspective with the ordering being handled via CUDA streams.
   
   I.E. RMM (libcudf's memory manager) has a couple of stream APIs associated to its `device_buffer` class as well as a private stream member which gets used in its destructor for deallocating. https://github.com/rapidsai/rmm/blob/0c08dd585031f58e2a9dcfbba5608cce10c423b2/include/rmm/device_buffer.hpp#L374-L400


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