Carolyn = Master (Nov 23 2010)


log in

Advanced search

Message boards : Technical News : Carolyn = Master (Nov 23 2010)

Previous · 1 · 2
Author Message
Profile SciManStevProject donor
Volunteer tester
Avatar
Send message
Joined: 20 Jun 99
Posts: 4865
Credit: 82,131,361
RAC: 41,757
United States
Message 1050802 - Posted: 24 Nov 2010, 15:17:38 UTC

With Carolyn as the master, would it be OK to turn on the tasks and pendings?

Steve
____________
Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website

DJStarfox
Send message
Joined: 23 May 01
Posts: 1043
Credit: 547,786
RAC: 110
United States
Message 1050817 - Posted: 24 Nov 2010, 17:28:04 UTC - in response to Message 1050802.

With Carolyn as the master, would it be OK to turn on the tasks and pendings?

Steve


+1 Let's see this baby rock.

Besides, isn't pending and such retrieved via the replica Jocelyn?

Metod, S56RKO
Volunteer tester
Send message
Joined: 27 Sep 02
Posts: 309
Credit: 34,282,273
RAC: 24,514
Slovenia
Message 1050837 - Posted: 24 Nov 2010, 19:38:20 UTC - in response to Message 1050771.

I'm hoping any ventilation issues would be resolved before the servers come fully online. I'd keep it safe and make both servers very well ventilated and not on top of each other like in the final picture you took a few posts back.


Rack-mounted servers are designed so that they suck cool air in front and exhaust warm air at the back. It is assumed that warm air will get removed somehow by AC. The worst thing is to create room for warm air to move to the front of rack where it mixes with 'fresh' cool air and thus increases temperature of input air. To avoid that one should install blank plates at the front of rack wherever rack is not occupied by equipment. In addition to that, machines ought to be stacked bottom-up so that warm air has opportunity to raise and escape from rack at the top.
If one leaves some space between two machines and follows rule about mounting blank plate at that space, air doesn't circulate in that narrow space between two machines, hence machines aren't cooled any better this way.

We have a rack of HP servers (mostly cousins of our Carolyn and Oscar - Proliants DL 360, 380, 580, 585 and ML 370) and storage enclosures (multiple MSA40 and MSA70) densely occupying 36 out of 42 U space whithout any problems with cooling. One Linux machine (this one) has continous uptime of 1612 days and ticking.

All those redundant ventilators in decent servers come with a reason. When these machines do what they are supposed to - and doing it real fast -, they sound like low-flying jet plane.
____________
Metod ...

Profile Andy Lee Robinson
Avatar
Send message
Joined: 8 Dec 05
Posts: 615
Credit: 42,104,135
RAC: 40,821
Hungary
Message 1050982 - Posted: 25 Nov 2010, 4:39:08 UTC - in response to Message 1050837.

If the exhaust air can't be directed to where it could be used to assist heating somewhere else, it should be vented outside to avoid loading the A/C.
Ideally this waste energy could be stored with a heat pump for reuase in the winter.

j tramer
Send message
Joined: 6 Oct 03
Posts: 242
Credit: 5,386,384
RAC: 16
Canada
Message 1050991 - Posted: 25 Nov 2010, 4:57:07 UTC - in response to Message 1050837.

Your right about the servers....i have a hp proliant 585 server, and it doe sound like an aircraft when it starts up....its deafening....thats why its in my basement....out of sight, out of mind, and i cant hear it....lol

Besides its beast, its huge, and heavy[/b]

John McLeod VII
Volunteer developer
Volunteer tester
Avatar
Send message
Joined: 15 Jul 99
Posts: 24542
Credit: 522,145
RAC: 85
United States
Message 1051100 - Posted: 25 Nov 2010, 15:43:36 UTC

All very good ideas if you have the budget to have a specialized A/C for the server room.
____________


BOINC WIKI

Metod, S56RKO
Volunteer tester
Send message
Joined: 27 Sep 02
Posts: 309
Credit: 34,282,273
RAC: 24,514
Slovenia
Message 1051164 - Posted: 25 Nov 2010, 20:10:01 UTC - in response to Message 1051100.

All very good ideas if you have the budget to have a specialized A/C for the server room.


Well, one thing is proper way of populating a server closet. Another thing is how to remove excess heat from it's surroundings. If you can not afford decent AC (it doesn't have to be specialized server room, could be plain home AC), then you can try to do your best, eg. by orienting closet in suitable way. Anyhow, you need to remove heat from surroundins of server closet and let closet and boxen inside to do their job (which includes moving air from one end to another).

But then, when it comes to budgetary woes: server closets don't come cheap, machines in rack mount chasis don't come cheap. If you consider all that, investment in modest AC is not that high after all.
____________
Metod ...

Profile KWSN THE Holy Hand Grenade!
Volunteer tester
Avatar
Send message
Joined: 20 Dec 05
Posts: 1948
Credit: 10,276,028
RAC: 18,103
United States
Message 1051369 - Posted: 26 Nov 2010, 19:34:32 UTC - in response to Message 1050982.
Last modified: 26 Nov 2010, 19:36:14 UTC

If the exhaust air can't be directed to where it could be used to assist heating somewhere else, it should be vented outside to avoid loading the A/C.
Ideally this waste energy could be stored with a heat pump for reuase in the winter.


Unfortunately the first suggestion won't work - there is no access to outside air from the Server Closet. (the "server closet" really is a (former utility) closet!) The heat pump idea would be viable, if someone could persuade the UC Berkeley administration that it would save lots of money that way...

The server closet has A/C, BTW! (the first breakdown in October was the A/C!)
____________
.

Metod, S56RKO
Volunteer tester
Send message
Joined: 27 Sep 02
Posts: 309
Credit: 34,282,273
RAC: 24,514
Slovenia
Message 1051373 - Posted: 26 Nov 2010, 19:44:49 UTC - in response to Message 1050982.

If the exhaust air can't be directed to where it could be used to assist heating somewhere else, it should be vented outside to avoid loading the A/C.
Ideally this waste energy could be stored with a heat pump for reuase in the winter.


If you want to redirect exhaust air somewhere else, then you need to suck other air into server room. Which means dust unless you filter incoming air. Dust mostly means trouble as everybody knows. That's why most (if not all) server rooms use A/C to remove excessive heat.

Now, A/C is in principle heat pump. Owners are free to do whatever they think of with heat at the hot end of heat pump. Most owners don't think of anything and just let fans do their jobs.
____________
Metod ...

Profile Kibble (KB7TIB)
Avatar
Send message
Joined: 6 Dec 99
Posts: 21
Credit: 1,568,393
RAC: 5,592
United States
Message 1051474 - Posted: 27 Nov 2010, 7:31:58 UTC

Let me add my thanks for your news posts, Matt. And, as has been said previously, we will be here waiting. Don't start the project up until you're satisfied that everything will run smoothly. Give Carolyn and Jocelyn our best! :-)
____________

PhonAcq
Send message
Joined: 14 Apr 01
Posts: 1622
Credit: 22,217,845
RAC: 4,347
United States
Message 1051493 - Posted: 27 Nov 2010, 11:45:30 UTC - in response to Message 1051474.

Yes, start it up when you are ready, but please start it slowly until you know better what it will handle. I'd rather see a few wu's occasionally, than have so many fits and starts like we have had since (well, forever).

Profile Chris SProject donor
Volunteer tester
Avatar
Send message
Joined: 19 Nov 00
Posts: 31763
Credit: 13,163,261
RAC: 37,451
United Kingdom
Message 1051498 - Posted: 27 Nov 2010, 14:05:37 UTC

If the exhaust air can't be directed to where it could be used to assist heating somewhere else, it should be vented outside to avoid loading the A/C.


I would have thought that Seti has a wealth of experience in getting rid of hot air! :-))) But I'm quite happy to let the guys set things up as they best see fit. Over the last year given all the trials and tribulations that they've had, they probably know more about setting up and admining servers, than a lot of people do.

They've made do with second-hand kit and donated pre-production stuff for many years, and although they were genuinely grateful for that, they now have the opportunity to start afresh with brand new state of the art equipment. It just makes so much sense to me to get it right and not rush things.

____________
Damsel Rescuer, Uli Devotee, Julie Supporter, Kitty sad,
ES99 Admirer, Raccoon Friend, Anniet fan, Hon Triumphvir


Profile rat1963
Send message
Joined: 3 Apr 99
Posts: 5
Credit: 50,523,537
RAC: 0
United States
Message 1051502 - Posted: 27 Nov 2010, 14:52:21 UTC

You guys are amazing. Thank you for all the hard work while I sit here on my Turkey and stuffing filled lazy posterior. Happy Thanksgiving and I'm looking forward to running SETI for another 11 years.
____________

Profile APCyberax
Volunteer tester
Send message
Joined: 6 Jun 01
Posts: 29
Credit: 2,000,348
RAC: 0
United Kingdom
Message 1052275 - Posted: 1 Dec 2010, 18:45:02 UTC - in response to Message 1051502.

Lets have a race.
"Seti Online" Vs "STS133 in orbit"

Who you think will win.


____________

Profile Cliff HardingProject donor
Volunteer tester
Avatar
Send message
Joined: 18 Aug 99
Posts: 989
Credit: 52,072,256
RAC: 45,979
United States
Message 1052277 - Posted: 1 Dec 2010, 19:04:16 UTC - in response to Message 1052275.

Lets have a race.
"Seti Online" Vs "STS133 in orbit"

Who you think will win.



STS133 won't fly prior to 12/17, and if everything goes as expected, and Murphy doesn't raise his ugly head, Seti should be back up sometime next week.

Profile KWSN THE Holy Hand Grenade!
Volunteer tester
Avatar
Send message
Joined: 20 Dec 05
Posts: 1948
Credit: 10,276,028
RAC: 18,103
United States
Message 1052501 - Posted: 2 Dec 2010, 16:48:36 UTC
Last modified: 2 Dec 2010, 16:59:20 UTC

Hadn't noticed this until now, but shouldn't the title of this thread be: "Carolyn = MISTRESS"? ;-)
____________
.

Profile Cliff HardingProject donor
Volunteer tester
Avatar
Send message
Joined: 18 Aug 99
Posts: 989
Credit: 52,072,256
RAC: 45,979
United States
Message 1052804 - Posted: 3 Dec 2010, 22:46:23 UTC - in response to Message 1050747.

Extreme Database Administration

Right. The question is what is the extreme part.


Thanks for the responses. (No, my question was actually the DBA part.)


Extreme DBAer(s) is/are the guy(s) that put the master database together. Being a former mainframe DB2 DBA, I would love to see the schema for it.

John McLeod VII
Volunteer developer
Volunteer tester
Avatar
Send message
Joined: 15 Jul 99
Posts: 24542
Credit: 522,145
RAC: 85
United States
Message 1052857 - Posted: 4 Dec 2010, 4:00:29 UTC - in response to Message 1052804.

Extreme Database Administration

Right. The question is what is the extreme part.


Thanks for the responses. (No, my question was actually the DBA part.)


Extreme DBAer(s) is/are the guy(s) that put the master database together. Being a former mainframe DB2 DBA, I would love to see the schema for it.

You might be able to give them some pointers. The schema is open source.
____________


BOINC WIKI

Profile Cliff HardingProject donor
Volunteer tester
Avatar
Send message
Joined: 18 Aug 99
Posts: 989
Credit: 52,072,256
RAC: 45,979
United States
Message 1052860 - Posted: 4 Dec 2010, 4:03:56 UTC - in response to Message 1052857.

Extreme Database Administration

Right. The question is what is the extreme part.


Thanks for the responses. (No, my question was actually the DBA part.)


Extreme DBAer(s) is/are the guy(s) that put the master database together. Being a former mainframe DB2 DBA, I would love to see the schema for it.

You might be able to give them some pointers. The schema is open source.


Who do I have to shoot to get a copy of it?... Or better yet where do I go to get it?

John McLeod VII
Volunteer developer
Volunteer tester
Avatar
Send message
Joined: 15 Jul 99
Posts: 24542
Credit: 522,145
RAC: 85
United States
Message 1052932 - Posted: 4 Dec 2010, 6:43:18 UTC - in response to Message 1052860.

Extreme Database Administration

Right. The question is what is the extreme part.


Thanks for the responses. (No, my question was actually the DBA part.)


Extreme DBAer(s) is/are the guy(s) that put the master database together. Being a former mainframe DB2 DBA, I would love to see the schema for it.

You might be able to give them some pointers. The schema is open source.


Who do I have to shoot to get a copy of it?... Or better yet where do I go to get it?

I believe that there are instructions on how to get all of the source code @ http://boinc.ssl.berkeley.edu.
____________


BOINC WIKI

Previous · 1 · 2

Message boards : Technical News : Carolyn = Master (Nov 23 2010)

Copyright © 2014 University of California