Can't talk.. Debugging.. (May 15 2007)

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Profile Matt Lebofsky
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Message 568133 - Posted: 15 May 2007, 23:05:33 UTC

We had the usual outage today which was mostly a success. The database compressed and was backed up in just over an hour. Normally this takes almost twice as long but the result table has significantly shrunk over the past two weeks (wonder why?). After that we put the new thumper in the closet (we being me, Eric, Jeff, and Kevin - it's a heavy machine). We also rebooted bruno to cleanly pick up a new disk (replacing a failed disk from yesterday). And I rebooted penguin to attach koloth's old tape drive to it (so it could read the classic data tapes for splitting).

That all went well. We also updated all the BOINC-side code to bring the SETI@home project in line with the current BOINC source tree and a few things broke, namely our validators and assimilators. These aren't project critical for the time being, so we're postponing dealing with these until we deal with the real problem at hand: getting people to connect to our data servers.

I think this is the longest outage we've ever had (even though it wasn't a "complete" outage - just no work was available) and we're in a whole new network configuration since the last major outage (new OS, new servers, new ISP, new switches, new router). In short, we're being clobbered by the returning flood of work requests. The major bottleneck is somewhere in the direction of our Hurricane router or bruno. Or at least that's the way it seems right now and there's no guarantee that when we break that dam a new bottleneck won't arise. I don't have the time to spell out what is broken and what we tried and what failed and what yielded unexpected results. Just know we're working on it and we understand most connections are being dropped.

- Matt

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-- "Any idiot can have a good idea. What is hard is to do it." - Jeanne-Claude
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Message 568134 - Posted: 15 May 2007, 23:08:50 UTC

Cheers guys, we know your doing the best you can.
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Message 568139 - Posted: 15 May 2007, 23:13:03 UTC

Glad to hear it's on the radar at least. Have a ton of stuck WUs, but none due for the next 13 days or so, so no rush.

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Message 568144 - Posted: 15 May 2007, 23:26:47 UTC

Thanks for the update, Matt; good luck with everything. 8-D


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Message 568148 - Posted: 15 May 2007, 23:35:43 UTC - in response to Message 568133.  


Thanks for the update, I think everyone realised that there would be a bottleneck somewhere.

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Message 568188 - Posted: 16 May 2007, 0:30:23 UTC

I remember back in the early days of SETI/BOINC there was no weekly scheduled outage...With all the new equipment coming on line...Does that mean that back up day may become a thing of the past?

PROUD TO BE TFFE!
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Message 568191 - Posted: 16 May 2007, 0:45:06 UTC

Is there a way to send the results? I don't care about the credits, but some of the results will expire tomorrow.
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Message 568193 - Posted: 16 May 2007, 0:53:08 UTC


Z-Z-Z-Z

Waiting.


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Message 568198 - Posted: 16 May 2007, 0:56:37 UTC - in response to Message 568191.  

Is there a way to send the results? I don't care about the credits, but some of the results will expire tomorrow.


Same here. I've got results that haven't uploaded since this all started. Except I got some that expire today.

Never surrender and never give up. In the darkest hour there is always hope.

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Message 568207 - Posted: 16 May 2007, 1:19:19 UTC

Totally understandable Matt. We know it will take a week or two for things to settle down again. We also know you guys will be doing all you can to ease the situation in the meantime, but you must be fighting a very uphill battle!

I bet no one ever envisaged these levels of network traffic when they dreamed up SETI ;)


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Message 568211 - Posted: 16 May 2007, 1:33:40 UTC

Boincers massing at the southern wall, sir. ;-)

I've suspended Seti since the outage occurred, the fleet picked up on backup projects, at least until the logjam breaks. Our Team certainly ensured that backups projects were added, and gave everyone a quick lesson on how to ensure that they don't run out of work. I suspect many other BOINC projects benefited from increased resources the past week or two.

Kudos for your team getting the project back online, the efforts are appreciated.


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Message 568240 - Posted: 16 May 2007, 2:18:01 UTC

Don't worry about rushing, guys. She'll be up when she's up, and we'll be here then.
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Message 568243 - Posted: 16 May 2007, 2:22:30 UTC

does this meen the 64bit clients will now be supported?
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Message 568258 - Posted: 16 May 2007, 2:46:27 UTC

I already have WUs that are behind deadline, and they look like they were downloaded after deadline.

Of course, the outage is also affecting Beta. *sigh*

Keep up the good work lads, we appreciate it!
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Message 568286 - Posted: 16 May 2007, 3:28:26 UTC - in response to Message 568258.  

I already have WUs that are behind deadline, and they look like they were downloaded after deadline.

Of course, the outage is also affecting Beta. *sigh*

Keep up the good work lads, we appreciate it!

As Odysseus pointed out, the validators are off.....
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Message 568289 - Posted: 16 May 2007, 3:36:29 UTC - in response to Message 568286.  

I already have WUs that are behind deadline, and they look like they were downloaded after deadline.

Of course, the outage is also affecting Beta. *sigh*

Keep up the good work lads, we appreciate it!

As Odysseus pointed out, the validators are off.....


Is my understanding correct though that units that exceed deadline will still be reissued, thus creating more download traffic (reissue) and more upload attempts once completed? If so, this is a snowball.
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Grant (SSSF)
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Message 568322 - Posted: 16 May 2007, 5:43:32 UTC - in response to Message 568289.  

Is my understanding correct though that units that exceed deadline will still be reissued, thus creating more download traffic (reissue) and more upload attempts once completed?

Nope.
It won't add or subtract from the network traffic. It will just be one more Work Unit available to crucnch amongst all the others that haven't yet been downloaded at all.

Grant
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Message 568327 - Posted: 16 May 2007, 6:10:22 UTC

It's a shame there isn't a smilie for pulling your hair out in frustration. ;)
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Message 568332 - Posted: 16 May 2007, 6:39:11 UTC

Keep on smiling...
We will overcome some day.

Grtz HP
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Message 568335 - Posted: 16 May 2007, 6:48:43 UTC

Isn't it possible to turn of the "due date" of the results until the connection problems is resolved. that way one result dont have to be sent out to more computers than neccesary.. Its just a waste of computing power in my eyes...
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Message boards : Technical News : Can't talk.. Debugging.. (May 15 2007)


 
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