hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7446) Implement CRC32C native code using SSE4.2 instructions
Date Fri, 15 Jul 2011 14:42:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13065974#comment-13065974
] 

Kihwal Lee commented on HADOOP-7446:
------------------------------------

{quote} One last thing {quote}

I spoke too soon. What about calling cpuid() from the library constructor and set a global
var? 

> Implement CRC32C native code using SSE4.2 instructions
> ------------------------------------------------------
>
>                 Key: HADOOP-7446
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7446
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: native
>            Reporter: Todd Lipcon
>         Attachments: hadoop-7446.txt
>
>
> Once HADOOP-7445 is implemented, we can get further performance improvements by implementing
CRC32C using the hardware support available in SSE4.2. This support should be dynamically
enabled based on CPU feature flags, and of course should be ifdeffed properly so that it doesn't
break the build on architectures/platforms where it's not available.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message