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Posts by Belfry

Posts by Belfry

21) Questions and Answers : Windows : Optimise PC build for CPDN (Message 46968)
Posted 5 Sep 2013 by Belfry
Post:
If the ISRT cache is large enough, Windows may decide to copy the BOINC data directory there (explaining the long shutdown time). Then you could perform the trick of hotplugging the BOINC HDD without crashing. Of course with this kind of caching you're still subjecting your SSD to a lot of writes.
22) Questions and Answers : Windows : Optimise PC build for CPDN (Message 46965)
Posted 5 Sep 2013 by Belfry
Post:
Two minutes waiting for shutdown tasks to write sounds pretty out-of-whack. Could it have something to do with that ISRT for SSD's?
23) Message boards : Number crunching : More Work (Message 46945)
Posted 2 Sep 2013 by Belfry
Post:
"firefighting" = fixing the servers and programs every time users break something.
Couldn't it have been left at: "firefighting = fixing the servers and programs", period? By users do you mean volunteers or researchers? And if the system is so fragile that volunteers and/or researchers break things is that their fault?
24) Message boards : Number crunching : More Work (Message 46920)
Posted 31 Aug 2013 by Belfry
Post:
Basically have to dedicate machines exclusively to CPDN.

They should rewrite the points scripts from scratch. We know everything else is working, so we're talking about access, adding and insertion. I know this is easier said than done, but no one at Oxford is capable of doing this? How long is the drive from Cambridge?
25) Message boards : Number crunching : still don't get credits since last breakdown (Message 46914)
Posted 29 Aug 2013 by Belfry
Post:
VM's don't make much of difference from a configuration stand point*. A little information pm'd to me like distribution, version, Mysql version would allow me to narrow my suggestions.

Not trying to look like a know-it-all, just trying to help.

Ed: * Unless there's an MS Active Directory in the mix. I doubt there would be in this situation, but if there is then I KNOW NOTHING (well, I do know that it's better to stay away.)
26) Message boards : Number crunching : still don't get credits since last breakdown (Message 46912)
Posted 29 Aug 2013 by Belfry
Post:
Another suggestion:

Could it be the older system used a different default shell, e.g. Bash? The new one might use Dash, in which case the scripts would need "#!/bin/bash" instead of "#!/bin/sh" at the top.

Probably not it, but if we get a few thousand of these ideas up here, the statistics will break in our favor.
27) Message boards : Number crunching : still don't get credits since last breakdown (Message 46911)
Posted 29 Aug 2013 by Belfry
Post:
[crickets,...crickets]

Hmm, probably with so many people typing at once it's overloaded the forum.

Ed: but doesn't explain how I got through.
28) Message boards : Number crunching : still don't get credits since last breakdown (Message 46909)
Posted 29 Aug 2013 by Belfry
Post:
The above maybe my best suggestion, because it's one of those things that may not get copied to a new system, it's obscure enough to be totally left out of any documentation, and will have vacated the memory cells of former admins after nine years from when it was written.

My talking to Carl probably wouldn't achieve much. What might bear fruit is for anyone who's even looked at a database to post ten suggestions to this thread. I'd like to see 100 more in the next hour. Come on people!
29) Message boards : Number crunching : still don't get credits since last breakdown (Message 46908)
Posted 29 Aug 2013 by Belfry
Post:
And another suggestion:

Maybe the script sourced credentials in a .bashrc file, like sections 1.2.1.1 to 1.2.1.2 here.
30) Message boards : Number crunching : still don't get credits since last breakdown (Message 46907)
Posted 29 Aug 2013 by Belfry
Post:
Who's Carl? The only system admins I know of right now are Andy and Jonathan:



(Based on Jon's photo, he could be a vampire.)

I see here he's listed under "Former Staff".
31) Message boards : Number crunching : still don't get credits since last breakdown (Message 46898)
Posted 27 Aug 2013 by Belfry
Post:
32) Message boards : Number crunching : still don't get credits since last breakdown (Message 46897)
Posted 27 Aug 2013 by Belfry
Post:
Video. It's really funny--if you watch the whole movie.
33) Message boards : Number crunching : still don't get credits since last breakdown (Message 46896)
Posted 27 Aug 2013 by Belfry
Post:
And back to suggestions:

Script user and/or ip address granted access (update database name set Host='ip address' ; update username set Host='ip address')? Remote access to 3306/tcp (or explicity configured) port open on Mysql server firewall? And the classic head-thumper from every phone representative's manual: is the ethernet cable plugged in?

As Leslie Nielson would say: "I just want to tell you both good luck. We're all counting on you." x5 times.

34) Message boards : Number crunching : still don't get credits since last breakdown (Message 46895)
Posted 27 Aug 2013 by Belfry
Post:
Hopefully you're right, but it could have more to do with the admin who setup the scripts being long gone from the project. That shouldn't be taken as criticism of the current staff: one of the most difficult things in IT is to take over a complex, production database with which you had nothing to do with setting up. It honestly makes me shudder thinking of the enormity and the complex math underlying the CPDN model databases.

I'm pretty sure my above suggestions are worthless. It's just fun to posit solutions from the safety and isolation from one's living room.
35) Message boards : Number crunching : still don't get credits since last breakdown (Message 46893)
Posted 27 Aug 2013 by Belfry
Post:
I'm guessing this also won't be helpful, but here's a cleanup line in my crontab which deletes old lines from my "sessions" and "challenges" tables in my database called "http_auth":

50 * * * * PATH=$PATH:/sbin mysql -h localhost -u username http_auth -e 'DELETE FROM sessions WHERE expire<NOW();' ; mysql -h localhost -u username http_auth -e 'DELETE FROM challenges WHERE timeout<NOW();'

Does the calculation script access a Mysql server with ssh? Maybe you need the servers's private key file?

(Sorry guys. You're in the penalty, and so are now subject to spurious suggestions from those of us who know precious little about Mysql.)
36) Message boards : Number crunching : still don't get credits since last breakdown (Message 46892)
Posted 27 Aug 2013 by Belfry
Post:
I'm guessing this won't be helpful, but maybe someone should look at /var/spool/cron/crontabs/* from the old server?
37) Message boards : climateprediction.net Science : Climate change in the News (Message 46871)
Posted 25 Aug 2013 by Belfry
Post:
38) Questions and Answers : Unix/Linux : Workunit "stuck" in the middle of calculation. (Message 46862)
Posted 24 Aug 2013 by Belfry
Post:
Not sure about this, but it shouldn't hurt anything. Stop BOINC and 'chown -R user:group /path/to/data/directory'. User and group should be your user name if you're running BOINC stand alone, or "boinc" if installed from repository.
39) Message boards : Number crunching : Servers up, trickles up, downloads going (Message 46634)
Posted 18 Jul 2013 by Belfry
Post:
With the retirement of the PHP board, probably the best place to go for information when climateapps2 is down is the BOINC forum, specifically: http://boinc.berkeley.edu/dev/forum_forum.php?id=11. Mo.v posted there recently and attributed the recent outage to a hard disk failure.
40) Message boards : Cafe CPDN : The_Cloud_Mystery (Message 46594)
Posted 7 Jul 2013 by Belfry
Post:
http://www.skepticalscience.com/cosmic-rays-and-global-warming-basic.htm


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