Continuing Progress


log in

Advanced search

Message boards : Technical News : Continuing Progress

1 · 2 · Next
Author Message
Profile Matt Lebofsky
Volunteer moderator
Project administrator
Project developer
Project scientist
Avatar
Send message
Joined: 1 Mar 99
Posts: 1390
Credit: 74,079
RAC: 0
United States
Message 1051937 - Posted: 29 Nov 2010, 23:19:13 UTC

For those who were celebrating, hope you had a lovely thanksgiving weekend. Things around here were fairly mellow, though progress continues.

The thumper-to-oscar conversion is still on schedule. In fact, just minutes ago we dropped the old spike table now that all those spikes were copied into the current spike table. It's amazing how fast you can drop a table containing 1.3 billion rows, though I did feel a disturbance in the force.

This morning we stopped the assimilators so the database is in a quiescent state. We're now backing it up one last time, and tomorrow morning we hope to "recover" oscar using this backup, which means it'll get populated with all current scientific data. This may take a day, and then we'll burn it in by starting up the assimilators again, maybe run some NTPCkrs. If all goes well we're still on for opening the floodgates again early next week.

In the meantime Jeff and I continue to rearrange the closet, cleaning it up, shuffling servers between racks and breakers to regain some organizational sanity. We also were tired of having the kvm monitor on top of the rack which was hard to read from down below. This picture shows the current status of things, including the monitor now nicely at eye level.



- Matt

____________
-- BOINC/SETI@home network/web/science/development person
-- "Any idiot can have a good idea. What is hard is to do it." - Jeanne-Claude

Profile Gary CharpentierProject donor
Volunteer tester
Avatar
Send message
Joined: 25 Dec 00
Posts: 12993
Credit: 7,664,698
RAC: 7,131
United States
Message 1051945 - Posted: 29 Nov 2010, 23:39:26 UTC

Thanks for the news and the pictures.

Take the time to get it right.

____________

Profile speedimic
Volunteer tester
Avatar
Send message
Joined: 28 Sep 02
Posts: 362
Credit: 16,590,653
RAC: 0
Germany
Message 1051946 - Posted: 29 Nov 2010, 23:41:06 UTC - in response to Message 1051937.

Want some cable straps? ;-)


____________
mic.


BANZAI56
Volunteer tester
Send message
Joined: 17 May 00
Posts: 123
Credit: 33,974,747
RAC: 0
United States
Message 1051947 - Posted: 29 Nov 2010, 23:41:41 UTC

Nice! And thanks for the pic...
____________

Profile SciManStevProject donor
Volunteer tester
Avatar
Send message
Joined: 20 Jun 99
Posts: 4897
Credit: 83,865,569
RAC: 13,656
United States
Message 1051948 - Posted: 29 Nov 2010, 23:43:36 UTC

You guys really rock! Those servers are in the best hands possible!

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

Profile X-Files 27
Avatar
Send message
Joined: 17 May 99
Posts: 100
Credit: 107,863,131
RAC: 10
Canada
Message 1051951 - Posted: 29 Nov 2010, 23:48:26 UTC - in response to Message 1051946.

Want some cable straps? ;-)


that's a little expensive.

I just use a twist-tie. You can buy it in a dollar store :)

____________

ClaggyProject donor
Volunteer tester
Send message
Joined: 5 Jul 99
Posts: 4214
Credit: 34,476,955
RAC: 15,249
United Kingdom
Message 1051952 - Posted: 29 Nov 2010, 23:53:53 UTC

Thanks for the update Matt,

Claggy

SMWProject donor
Send message
Joined: 16 May 99
Posts: 21
Credit: 11,355,424
RAC: 2,937
United States
Message 1051953 - Posted: 30 Nov 2010, 0:09:58 UTC

Matt,

Thanks for keeping us in the loop. You need to know we are all there with you in spirit:)


____________
"It is better to be hated for what you are then to be loved for what you are not"
- Andre Gide (1869-1951)

Profile Jack Zhang
Volunteer tester
Avatar
Send message
Joined: 2 Jul 06
Posts: 206
Credit: 6,141,531
RAC: 893
Canada
Message 1051991 - Posted: 30 Nov 2010, 5:05:19 UTC

I'm still concerned about ventilation after seeing that picture. If the new servers get too hot, the project is at risk of going down again.
____________
What if Fiction was Fact and Fact was Fiction and vice versa?

John McLeod VII
Volunteer developer
Volunteer tester
Avatar
Send message
Joined: 15 Jul 99
Posts: 24788
Credit: 524,053
RAC: 86
United States
Message 1051992 - Posted: 30 Nov 2010, 5:09:27 UTC - in response to Message 1051951.

Want some cable straps? ;-)


that's a little expensive.

I just use a twist-tie. You can buy it in a dollar store :)

Plastic cable ties can be had for a few dollars for hundreds of them.
____________


BOINC WIKI

Profile Geek@Play
Volunteer tester
Avatar
Send message
Joined: 31 Jul 01
Posts: 2467
Credit: 86,144,272
RAC: 279
United States
Message 1052018 - Posted: 30 Nov 2010, 7:24:29 UTC

Matt has probably thought of this and has an answer.

Since the work that out in the field on client computers would be minimal when restarting the project perhaps the "resend" option could be turned on at the servers to eliminate the ghost problem.
____________
Boinc....Boinc....Boinc....Boinc....

Profile [seti.international] Dirk Sadowski
Volunteer tester
Avatar
Send message
Joined: 6 Apr 07
Posts: 7115
Credit: 61,261,408
RAC: 5,541
Germany
Message 1052049 - Posted: 30 Nov 2010, 14:33:07 UTC - in response to Message 1051937.

Matt, thanks for the news!

____________
BR

SETI@home Needs your Help ... $10 & U get a Star!

Team seti.international

Das Deutsche Cafe. The German Cafe.

WinterKnight
Volunteer tester
Send message
Joined: 18 May 99
Posts: 8748
Credit: 25,597,917
RAC: 9,258
United Kingdom
Message 1052050 - Posted: 30 Nov 2010, 14:40:23 UTC - in response to Message 1052018.

Matt has probably thought of this and has an answer.

Since the work that out in the field on client computers would be minimal when restarting the project perhaps the "resend" option could be turned on at the servers to eliminate the ghost problem.

The resend option only increases server load. So not a good idea.

And as every computer in the universe has no tasks and will be trying to make contact. It would be better to decrease the downloads/processor so that the host gets enough work for a few hours, and set the server enforced back-off to 60 mins and not the default 11 sec. The lower the server load the less likely chance of ghosts.

Profile Gundolf Jahn
Send message
Joined: 19 Sep 00
Posts: 3184
Credit: 360,556
RAC: 37
Germany
Message 1052058 - Posted: 30 Nov 2010, 15:41:48 UTC - in response to Message 1052050.

...and set the server enforced back-off to 60 mins and not the default 11 sec...

The default is now 5 minutes (in fact 303 secs). ;-)

Gruß,
Gundolf

bill
Send message
Joined: 16 Jun 99
Posts: 861
Credit: 24,148,117
RAC: 1,872
United States
Message 1052063 - Posted: 30 Nov 2010, 16:55:45 UTC

Excellent. Thanks for the update and pic. If I might ask, how much trouble would it be to replace your non-standard rack with a standard rack so that all the servers fit properly without having to be jury rigged?

A new rack shouldn't be that expensive, should it?
____________

Profile KWSN THE Holy Hand Grenade!
Volunteer tester
Avatar
Send message
Joined: 20 Dec 05
Posts: 1991
Credit: 10,992,777
RAC: 11,410
United States
Message 1052064 - Posted: 30 Nov 2010, 17:03:29 UTC - in response to Message 1052050.


The resend option only increases server load. So not a good idea.

And as every computer in the universe has no tasks and will be trying to make contact. It would be better to decrease the downloads/processor so that the host gets enough work for a few hours, and set the server enforced back-off to 60 mins and not the default 11 sec. The lower the server load the less likely chance of ghosts.


Not "every computer in the universe"... just every computer that has BOINC AND has connected to SETI...! (~ ½ a million, the last time I looked...)
____________
.

Profile speedimic
Volunteer tester
Avatar
Send message
Joined: 28 Sep 02
Posts: 362
Credit: 16,590,653
RAC: 0
Germany
Message 1052065 - Posted: 30 Nov 2010, 17:05:13 UTC - in response to Message 1051992.

...and they look cleaner if the excess bit is cut off.

Want some cable straps? ;-)


that's a little expensive.

I just use a twist-tie. You can buy it in a dollar store :)

Plastic cable ties can be had for a few dollars for hundreds of them.


____________
mic.


Profile KWSN THE Holy Hand Grenade!
Volunteer tester
Avatar
Send message
Joined: 20 Dec 05
Posts: 1991
Credit: 10,992,777
RAC: 11,410
United States
Message 1052066 - Posted: 30 Nov 2010, 17:05:53 UTC - in response to Message 1052063.
Last modified: 30 Nov 2010, 17:09:11 UTC

Excellent. Thanks for the update and pic. If I might ask, how much trouble would it be to replace your non-standard rack with a standard rack so that all the servers fit properly without having to be jury rigged?

A new rack shouldn't be that expensive, should it?


The main problem, as Matt has explained, is that there is no such a thing as a "standard rack" - every manufacturer seems to have their own (non compatible) standard...

The main problem with those cheap twist-ties is that the binding is metal, which can cause problems in a high-speed high-density data environment...
____________
.

Profile Black Squirrel Prime
Send message
Joined: 29 Jul 07
Posts: 8
Credit: 11,598,242
RAC: 3,286
United States
Message 1052067 - Posted: 30 Nov 2010, 17:10:25 UTC

Great news and thanks for the pix!

bill
Send message
Joined: 16 Jun 99
Posts: 861
Credit: 24,148,117
RAC: 1,872
United States
Message 1052114 - Posted: 1 Dec 2010, 1:35:12 UTC - in response to Message 1052066.

Excellent. Thanks for the update and pic. If I might ask, how much trouble would it be to replace your non-standard rack with a standard rack so that all the servers fit properly without having to be jury rigged?

A new rack shouldn't be that expensive, should it?


The main problem, as Matt has explained, is that there is no such a thing as a "standard rack" - every manufacturer seems to have their own (non compatible) standard...


Well, if it was I In charge, I'd give these guys a call (or a similar vendor)
http://www.racksolutions.com/home/all-products-by-photo/server-racks-cabinets-enclosures.html "Fits any server" and see if they can build me one that works.

The main problem with those cheap twist-ties is that the binding is metal, which can cause problems in a high-speed high-density data environment...


I prefer reusable velcro type wraps myself.

1 · 2 · Next

Message boards : Technical News : Continuing Progress

Copyright © 2014 University of California