[GitHub] [arrow-nanoarrow] paleolimbot opened a new issue, #245: Device extension should implement async buffer copying for CUDA

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

paleolimbot opened a new issue, #245:
URL: https://github.com/apache/arrow-nanoarrow/issues/245

   Currently, the device extension is unreasonably slow when copying any array to a device because it synchronizes for every buffer copy. For string/binary types, an additional copy is needed to find the length of the next buffer. There is no technical limitation preventing these copies from occuring in parallel; however, the initial PR for this didn't get there.
   
   References:
   
   - https://github.com/apache/arrow-nanoarrow/pull/205#discussion_r1235579653
   - https://github.com/apache/arrow-nanoarrow/pull/205#discussion_r1237463786
   - https://github.com/apache/arrow-nanoarrow/pull/205#discussion_r1226854070
   - https://github.com/apache/arrow-nanoarrow/pull/205#discussion_r1224780614


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