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From "Eli Reisman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GIRAPH-535) Range-partitioning and edge locality benchmark
Date Mon, 25 Feb 2013 19:10:12 GMT

    [ https://issues.apache.org/jira/browse/GIRAPH-535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13586152#comment-13586152
] 

Eli Reisman commented on GIRAPH-535:
------------------------------------

I have not had a chance to build it yet, but I had looked at the code in some detail and I
like everything I see.

                
> Range-partitioning and edge locality benchmark
> ----------------------------------------------
>
>                 Key: GIRAPH-535
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-535
>             Project: Giraph
>          Issue Type: New Feature
>            Reporter: Alessandro Presta
>            Assignee: Alessandro Presta
>         Attachments: GIRAPH-535.patch
>
>
> Range-based partitioning can drastically reduce network communication when using a vertex
id space where close ids correspond to vertices likely to be connected.
> We currently have an incomplete implementation of range-based partitioning that tries
to be very generic (allowing arbitrarily different partition sizes).
> Talking about this with Avery, we thought that for now it's better to add a simpler version
(which tries to split as evenly as possible) and leave the current classes there in case someone
wants to implement a more complex logic.
> A nice-to-have is also extending the pseudo-random formats to generate a required ratio
of partition-local edges, in order to estimate the impact of locality with benchmarks.

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