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Date: Tue, 13 Jan 2009 02:01:04 -0800 (PST)
From: "Samuel Guo (JIRA)" <jira@apache.org>
To: hama-dev@incubator.apache.org
Subject: [jira] Commented: (HAMA-129) Improving speed of matrix
 multiplication
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    [ https://issues.apache.org/jira/browse/HAMA-129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12663284#action_12663284 ] 

Samuel Guo commented on HAMA-129:
---------------------------------

great!

BTW, can you share the tablets' key-range distribution of matrix a, matrix b, and result matrix?

> Improving speed of matrix multiplication
> ----------------------------------------
>
>                 Key: HAMA-129
>                 URL: https://issues.apache.org/jira/browse/HAMA-129
>             Project: Hama
>          Issue Type: Improvement
>          Components: implementation
>    Affects Versions: 0.1.0
>            Reporter: Edward J. Yoon
>            Assignee: Edward J. Yoon
>             Fix For: 0.1.0
>
>         Attachments: HAMA-129.patch, HAMA-129_newApproach.patch, HAMA-129_v01.patch, HAMA-129_v02.patch, HAMA-129_v03.patch, HAMA-129_v04.patch, HAMA-129_v05.patch, HAMA-129_v06.patch, patch01.txt, patch02.txt
>
>
> We use a blockinputformat (row based partitioning). but it causes "java.lang.OutOfMemoryError: Java heap space" when size is big.
> I'll write the formulas and partition them as PIEstimator.

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