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From Ravikant Dindokar <ravikant.i...@gmail.com>
Subject Inter-worker and Intra-worker communication in Giraph
Date Sun, 29 May 2016 18:32:18 GMT
Hi Giraph Users,

I want to know, does the messaging cost between two vertices that are owned
by same worker differs from messaging cost for two vertices that are owned
by different workers?
More specifically, if two sender and receiver vertex both belong to same
machine, does the message incurs a network cost or does Giraph uses some in
memory data structures to avoid network cost?

Also how can I compute number of messages exchanged
1. such that sender & receiver belong to same host
2. such that sender & receiver belong different hosts.

(i.e. where to add logging and how to get required info? e.g. WorkerContext
class ? )


Thanks
Ravikant

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