[
https://issues.apache.org/jira/browse/HADOOP-19849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18069763#comment-18069763
]
ASF GitHub Bot commented on HADOOP-19849:
-----------------------------------------
pan3793 commented on PR #8371:
URL: https://github.com/apache/hadoop/pull/8371#issuecomment-4159541037
Modern JDKs should be able to leverage hardware capacity to speed up the
calculation of CRC32/CRC32C. Have you compared this implementation with the JDK
built-in one? If JDK does this well, seems we don't need to duplicate this on
the Hadoop side.
> [RISC-V] Add Zbc-accelerated native CRC32C path in bulk CRC implementation
> --------------------------------------------------------------------------
>
> Key: HADOOP-19849
> URL: https://issues.apache.org/jira/browse/HADOOP-19849
> Project: Hadoop Common
> Issue Type: Improvement
> Components: common
> Affects Versions: 3.5.1
> Reporter: Ptroc
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.5.1
>
>
> This change adds a riscv64 native CRC32C acceleration path in the existing
> bulk CRC implementation using Zbc (CLMUL) instructions. It introduces CRC32C
> bitwise fallback, pipelined processing, and runtime hookup of the CRC32C
> function pointer when Zbc is detected.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
