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Carolyn = Master (Nov 23 2010)
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SciManStev Send message Joined: 20 Jun 99 Posts: 6658 Credit: 121,090,076 RAC: 0 |
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: 1066 Credit: 1,226,053 RAC: 2 |
With Carolyn as the master, would it be OK to turn on the tasks and pendings? +1 Let's see this baby rock. Besides, isn't pending and such retrieved via the replica Jocelyn? |
Metod, S56RKO Send message Joined: 27 Sep 02 Posts: 309 Credit: 113,221,277 RAC: 9 |
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 ... |
Andy Lee Robinson Send message Joined: 8 Dec 05 Posts: 630 Credit: 59,973,836 RAC: 0 |
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: 5,412,368 RAC: 0 |
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 Send message Joined: 15 Jul 99 Posts: 24806 Credit: 790,712 RAC: 0 |
All very good ideas if you have the budget to have a specialized A/C for the server room. BOINC WIKI |
Metod, S56RKO Send message Joined: 27 Sep 02 Posts: 309 Credit: 113,221,277 RAC: 9 |
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 ... |
KWSN THE Holy Hand Grenade! Send message Joined: 20 Dec 05 Posts: 3187 Credit: 57,163,290 RAC: 0 |
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. 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!) . Hello, from Albany, CA!... |
Metod, S56RKO Send message Joined: 27 Sep 02 Posts: 309 Credit: 113,221,277 RAC: 9 |
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. 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 ... |
Kibble (KB7TIB) Send message Joined: 6 Dec 99 Posts: 27 Credit: 10,121,469 RAC: 2 |
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: 1656 Credit: 30,658,217 RAC: 1 |
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). |
rat1963 Send message Joined: 3 Apr 99 Posts: 5 Credit: 50,559,248 RAC: 0 |
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. |
APCyberax Send message Joined: 6 Jun 01 Posts: 29 Credit: 24,078,024 RAC: 48 |
Lets have a race. "Seti Online" Vs "STS133 in orbit" Who you think will win. |
Cliff Harding Send message Joined: 18 Aug 99 Posts: 1432 Credit: 110,967,840 RAC: 67 |
Lets have a race. 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. |
KWSN THE Holy Hand Grenade! Send message Joined: 20 Dec 05 Posts: 3187 Credit: 57,163,290 RAC: 0 |
Hadn't noticed this until now, but shouldn't the title of this thread be: "Carolyn = MISTRESS"? ;-) . Hello, from Albany, CA!... |
Cliff Harding Send message Joined: 18 Aug 99 Posts: 1432 Credit: 110,967,840 RAC: 67 |
Extreme Database Administration 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 Send message Joined: 15 Jul 99 Posts: 24806 Credit: 790,712 RAC: 0 |
Extreme Database Administration You might be able to give them some pointers. The schema is open source. BOINC WIKI |
Cliff Harding Send message Joined: 18 Aug 99 Posts: 1432 Credit: 110,967,840 RAC: 67 |
Extreme Database Administration 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 Send message Joined: 15 Jul 99 Posts: 24806 Credit: 790,712 RAC: 0 |
Extreme Database Administration I believe that there are instructions on how to get all of the source code @ http://boinc.ssl.berkeley.edu. BOINC WIKI |
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