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From "Edward J. Yoon" <edwardy...@apache.org>
Subject Re: Confusion about superstep count information
Date Thu, 30 Jan 2014 07:52:24 GMT
Looks like a bug :/

On Thu, Jan 30, 2014 at 12:46 AM, Tommaso Teofili
<tommaso.teofili@gmail.com> wrote:
> Hi all,
>
> maybe this has been already discussed some time ago, but I cannot find any
> reference to such a discussion: given I have a BSP with the following
> pseudo code:
> public class MyBSP extends BSP {
>
>   public void bsp(BspPeer peer) {
>     //1
>     peer.sync();
>     // 2
>     peer.sync();
>     // 3
>     peer.sync();
>   }
>
> }
>
> and when I run it locally on a dual core machine, I get the following
> output:
> 14/01/28 10:08:08 INFO bsp.BSPJobClient: Current supersteps number: 2
> 14/01/28 10:08:08 INFO bsp.BSPJobClient: The total number of supersteps: 2
> 14/01/28 10:08:08 INFO bsp.BSPJobClient: Counters: 6
> 14/01/28 10:08:08 INFO bsp.BSPJobClient:
> org.apache.hama.bsp.JobInProgress$JobCounter
> 14/01/28 10:08:08 INFO bsp.BSPJobClient:     SUPERSTEPS=2
> 14/01/28 10:08:08 INFO bsp.BSPJobClient:     LAUNCHED_TASKS=2
> 14/01/28 10:08:08 INFO bsp.BSPJobClient:
> org.apache.hama.bsp.BSPPeerImpl$PeerCounter
> 14/01/28 10:08:08 INFO bsp.BSPJobClient:     SUPERSTEP_SUM=6
> 14/01/28 10:08:08 INFO bsp.BSPJobClient:     TIME_IN_SYNC_MS=1
> 14/01/28 10:08:08 INFO bsp.BSPJobClient:     TOTAL_MESSAGES_SENT=...
> 14/01/28 10:08:08 INFO bsp.BSPJobClient:     TOTAL_MESSAGES_RECEIVED=...
>
> I am a bit confused since I have defined 3 supersteps which run on 2 tasks,
> so it seems to me SUPERSTEP_SUM is correctly set to 6 while I cannot
> understand why the other stats about supersteps show:
> - Current supersteps number: 2
> - The total number of supersteps: 2
> - SUPERSTEPS=2
>
> Can anyone help me clarify what's the exact semantic of them?
> I'm running that using trunk in local mode, any clarification would be
> appreciated.
> Thanks in advance,
> Tommaso



-- 
Best Regards, Edward J. Yoon
@eddieyoon

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