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Posted to dev@hama.apache.org by "Edward J. Yoon (JIRA)" <ji...@apache.org> on 2008/12/04 08:27:44 UTC
[jira] Created: (HAMA-121) default maximum block size
default maximum block size
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Key: HAMA-121
URL: https://issues.apache.org/jira/browse/HAMA-121
Project: Hama
Issue Type: Improvement
Components: implementation
Reporter: Edward J. Yoon
Fix For: 0.1.0
Using 'mapred.child.java.opts', we can calculate the default maximum block size.
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[jira] Commented: (HAMA-121) default maximum block size
Posted by "Samuel Guo (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12653308#action_12653308 ]
Samuel Guo commented on HAMA-121:
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I think we may consider the cpu's cache size to decide the default maximum block size.
A suitable block size will reduce cpu cache hit misses during *SubMatrix* multiplication. Or we may change the *mult* method's implementation of *SubMatrix* to match a cpu's cache working pattern.
I think we may do some experiments over *SubMatrix* to know a suitable size.
> default maximum block size
> ---------------------------
>
> Key: HAMA-121
> URL: https://issues.apache.org/jira/browse/HAMA-121
> Project: Hama
> Issue Type: Improvement
> Components: implementation
> Reporter: Edward J. Yoon
> Fix For: 0.1.0
>
>
> Using 'mapred.child.java.opts', we can calculate the default maximum block size.
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[jira] Resolved: (HAMA-121) default maximum block size
Posted by "Edward J. Yoon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Edward J. Yoon resolved HAMA-121.
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Resolution: Won't Fix
Won't fix
> default maximum block size
> ---------------------------
>
> Key: HAMA-121
> URL: https://issues.apache.org/jira/browse/HAMA-121
> Project: Hama
> Issue Type: Improvement
> Components: matrix
> Reporter: Edward J. Yoon
> Fix For: 0.1.0
>
>
> Using 'mapred.child.java.opts', we can calculate the default maximum block size.
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