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From "Mikalai Parafeniuk (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HAMA-524) [GSoC 2012] Sparse Matrix-Vector multiplication (SpMV) on Hama
Date Sat, 18 Aug 2012 16:48:38 GMT

     [ https://issues.apache.org/jira/browse/HAMA-524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Mikalai Parafeniuk updated HAMA-524:

    Attachment: HAMA_524_v2.patch

Hello everyone. I am glad to say, that this version of SpMV works stable on my machine. I
submitted new version of patch, updated github repository with SpMV, updated wiki page for
SpMV. I tested this version in pseudo-distributed mode with different problem sizes (4x4,
10x10, 100x100, 1000x1000). Firm pencils down date for gsoc is scheduled for monday, so any
feedback about code or wiki page, advises will be highly appreciated. 
Also I have one little problem : when I launched {{SpMV}} in pair with {{RandomMatrixGenerator}}
for problem size 10000x10000 on local machine I run out of memory. After that I cleaned up
directories, mentioned in config files and tmp, but there is still little free memory. Where
can I found internal Hadoop and Hama data to free some space?
> [GSoC 2012] Sparse Matrix-Vector multiplication (SpMV) on Hama
> --------------------------------------------------------------
>                 Key: HAMA-524
>                 URL: https://issues.apache.org/jira/browse/HAMA-524
>             Project: Hama
>          Issue Type: New Feature
>          Components: bsp core, examples, math
>            Reporter: Edward J. Yoon
>            Assignee: Mikalai Parafeniuk
>              Labels: gsoc, gsoc2012, newbie
>         Attachments: broken_pipe_exception.zip, eof_exception.zip, HAMA-524.patch, HAMA_524_v1.patch,
HAMA_524_v2.patch, spmv.png, SpMV_v01.patch
> Implement Efficient and Fast SpMV algorithm which can be widely used in scientiļ¬c computing,
financial modeling, information retrieval, and others, using Hama Bulk Synchronous Parallel

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