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From "Claudio Martella (JIRA)" <>
Subject [jira] [Commented] (GIRAPH-701) Communication improvement using one-to-all message sending
Date Wed, 31 Jul 2013 10:03:50 GMT


Claudio Martella commented on GIRAPH-701:

this is interesting. can you relate about the change of semantics in the way messages are
managed? I guess messages have to be considered like reusables and hence need to be copied
if kept (e.g. in an edge value or vertex value). Correct?
> Communication improvement using one-to-all message sending
> ----------------------------------------------------------
>                 Key: GIRAPH-701
>                 URL:
>             Project: Giraph
>          Issue Type: New Feature
>            Reporter: Jesse
>         Attachments: GIRAPH-701.patch
> Using one-to-all message sending to send one message copy to multiple target vertices
on the same worker.
> To enable this feature, use conf.enableOneToAllMsgSending(). 
> Pagerank benchmarking (Partitions: 640, Edges per vertex: 500, Vertices: 200000000, Workers:
> shows that the time per superstep is reduced by 40%. 

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