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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2018/02/11 21:27:02 UTC

[jira] [Commented] (ARROW-2127) [Plasma] Transfer of objects between CPUs and GPUs

    [ https://issues.apache.org/jira/browse/ARROW-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16360134#comment-16360134 ] 

Wes McKinney commented on ARROW-2127:
-------------------------------------

One way might be to introduce a {{Move}} request and a {{Copy}} request. If the source is CPU and target is GPU (or vice versa), then it would transfer across devices

> [Plasma] Transfer of objects between CPUs and GPUs
> --------------------------------------------------
>
>                 Key: ARROW-2127
>                 URL: https://issues.apache.org/jira/browse/ARROW-2127
>             Project: Apache Arrow
>          Issue Type: Improvement
>            Reporter: Philipp Moritz
>            Priority: Major
>
> It should be possible to transfer an object that was created on the CPU to the GPU and vice versa. One natural implementation is to introduce a flag to plasma::Get that specifies where the object should end up and then transfer the object under the hood and return the appropriate buffer.



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