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From Han JU <ju.han.fe...@gmail.com>
Subject Aggregate waiting time
Date Tue, 11 Jun 2013 13:31:39 GMT
Hi,

When I examine the logs of each worker, I found that some time is spent on
waiting for other tasks:

INFO org.apache.giraph.utils.TaskIdsPermitsBarrier: waitForRequiredPermits:
Waiting for 7 more tasks to send their aggregator data, task ids: [3, 6,
13, 17, 18, 26, 29]

And this seems to me the barrier in BSP model for every super-step.
Do we have a method to aggregate all these waiting time?

Thanks.
-- 
*JU Han*

Software Engineer Intern @ KXEN Inc.
UTC   -  Université de Technologie de Compiègne
*     **GI06 - Fouille de Données et Décisionnel*

+33 0619608888

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