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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2020/09/07 17:12:00 UTC

[jira] [Commented] (ARROW-4861) [C++] Introduce MemoryManager::Memset method.

    [ https://issues.apache.org/jira/browse/ARROW-4861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17191811#comment-17191811 ] 

Antoine Pitrou commented on ARROW-4861:
---------------------------------------

[~pearu] Do you still need this / want to work on this?

> [C++] Introduce MemoryManager::Memset method.
> ---------------------------------------------
>
>                 Key: ARROW-4861
>                 URL: https://issues.apache.org/jira/browse/ARROW-4861
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Pearu Peterson
>            Assignee: Pearu Peterson
>            Priority: Major
>              Labels: C++
>             Fix For: 2.0.0
>
>
> Exposing such a method could be useful to initialize a buffer without going through a CPU-to-device memory copy.
> For example CUDA expose several memset-like APIs to initialize GPU memory with different initializer widths:
> https://docs.nvidia.com/cuda/cuda-driver-api/group__CUDA__MEM.html#group__CUDA__MEM_1g6e582bf866e9e2fb014297bfaf354d7b



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