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Deferring Communication

Questions and Answers : Preferences : Deferring Communication
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Profile old_user123

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Message 306 - Posted: 7 Aug 2004, 12:33:53 UTC

I have Broadband, but I keep it switched off when I am not actually using it. (I know it would cost me nothing, but I worry about hackers who look for open links and also on-all-the-time machine that they can hijack for junk mailing.)

The software doesn\'t seem to like this, giving me a string of messages like \"Deferring Communication with project for 5 hours, 54 minutes, and 43 seconds\".

It just did this even though I am currently linked and it could have communicated.

I also wonder what it is communicating about, since I already have a work unit running, 9% complete.
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Ingleside

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Message 312 - Posted: 7 Aug 2004, 13:38:21 UTC

CPDN is making a "trickle" roughly every 1.4% in current version, this small file is uploaded along with a scheduler-request.

BOINC updates the time to next scheduler-request every 1 hour, therefore you'll get this showing up in the log every hour counting down. To automatically connect, if using the win-gui, navigate to "Projects"-tab & right-click CPDN and choose "retry now".

BTW, since you're turning off your connection, if running the gui recommend going to File-menu and choose "Disable BOINC Network Access". Till you enables this again, or restart BOINC, you'll not try to upload/download anything.
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Message 390 - Posted: 8 Aug 2004, 8:42:14 UTC - in response to Message 312.  

> CPDN is making a "trickle" roughly every 1.4% in current version, this small
> file is uploaded along with a scheduler-request.
>
> BOINC updates the time to next scheduler-request every 1 hour, therefore
> you'll get this showing up in the log every hour counting down. To
> automatically connect, if using the win-gui, navigate to "Projects"-tab &
> right-click CPDN and choose "retry now".
>
> BTW, since you're turning off your connection, if running the gui recommend
> going to File-menu and choose "Disable BOINC Network Access". Till you enables
> this again, or restart BOINC, you'll not try to upload/download anything.
>
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Profile old_user123

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Message 391 - Posted: 8 Aug 2004, 8:44:24 UTC - in response to Message 312.  

Thanks, disabling the BOINC network did do the trick. It starts communicating again as soon as it can.

PS, this message board is a shade confusing. I accidentally re-posted Ingelside's answer, sorry.
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Message 403 - Posted: 8 Aug 2004, 10:10:29 UTC
Last modified: 8 Aug 2004, 10:11:44 UTC

Hi GwydionT,

I use Broadband in exactly the same way; so it’s easier to monitor the kids’ usage!

CPDN trickles statistics every 10,802 timesteps, although a complete phase is 259,248 timesteps, and of course there are 3 phases for each model. Even with your IP/ISP link disabled, when it becomes available this trickle information should find its way home to the CPDN central servers. So from the BOINC message log AFAIK the following messages indicate such communication:

climateprediction.net - YYYY-MM-DD HH:MM:SS - Sending request to scheduler: http://climateapps2.oucs.ox.ac.uk/cpdnboinc_cgi/cgi
climateprediction.net - YYYY-MM-DD HH:MM:SS - Scheduler RPC to http://climateapps2.oucs.ox.ac.uk/cpdnboinc_cgi/cgi succeeded

To display trickle information follow the following trail from the http://climateapps2.oucs.ox.ac.uk/cpdnboinc/home.php web page:

Your Account -> Results -> Result ID (Work Unit#) -> Trickle # (At bottom of page)

This is the trickle information for one of my two Work Units allocated to the same machine:

Trickle Information for Result # 193
Time Sent (UTC) Phase Timestep CPU Time (sec) Average
08 Aug 2004 05:53:13 1 32406 99390 3.0670246250694
07 Aug 2004 09:05:12 1 21604 66288 3.0683206813553
06 Aug 2004 12:26:30 1 10802 33236 3.0768376226625

I don’t do anything with disabling BOINC network access when I connect or disconnect my ISP/IP connection. AFAIK, when my ISP/IP connection becomes active, the trickle information is registered.
UK4CP @ www.uk4cp.co.uk (United Kingdom Group) Celeron 2.6GHz XP Pro SP1 768MB RAM
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The Real Weasle

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Message 2061 - Posted: 29 Aug 2004, 7:06:58 UTC - in response to Message 312.  

> BTW, since you're turning off your connection, if running the gui recommend
> going to File-menu and choose "Disable BOINC Network Access". Till you enables
> this again, or restart BOINC, you'll not try to upload/download anything.

I also have this problem... in addition my GUI locked up and stopped progressing when I reached a trickle, while waiting to comunicate with the servers. It did not continue 'crunching' even though the status under the work tab was 'running' the CPU time was not progressing at all. I connected up and tried 'update' (right-click under the projects tab) and that sent in the trickle and I think solved the issue. I have now disabled Boinc network access and I will wait and see if that solves it. Certainly a mention should be made in the installation instructions.

;-) TRW
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Questions and Answers : Preferences : Deferring Communication

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