Latest Astropulse Status

Message boards : Technical News : Latest Astropulse Status

To post messages, you must log in.

1 · 2 · Next

AuthorMessage
Eric Korpela
Volunteer moderator
Project administrator
Project developer
Project scientist
Avatar

Send message
Joined: 3 Apr 99
Posts: 1226
Credit: 18,735,758
RAC: 7,728
United States
Message 1645119 - Posted: 21 Feb 2015, 23:38:12 UTC

Sorry for the long time with no updates. It's been a few busy weeks for me. First there was the ICON EUV critical design review (CDR) to prepare for. Now I'm in a panic about getting the automation in our calibration facility up and running before next week, and I'm preparing for a talk I'm giving next week. It hasn't left a lot of time for updates.

Well, as you've surmised, the repair on the Astropulse database came to a screeching halt a couple weeks ago when the impossible happened. We were moving files to free up space and then linking them back in. The script was checking before a file was moved to see if it was already a link or if it was a file to prevent a link being moved on top of a file, using the standard unix command "test -f" which returns true for files and false for links. Except on that day it returned true for about 10 links in a row. About the only thing I can come up with for a reason would be a bug in the xfs file system or in the "test" command, which is built into bash.

Anyway about 4.5 million astropulse signals lost their data blobs when that happened. This isn't as bad as it seems because that blob is just a little chunk of the workunit that can be recovered from the original data file.

But we decided that marvin was too tight on disk space for this reorganization, so we move the astropulse database and all its data to another machine where we made a dump of all the signals, dropped the old data chunks, added new ones, and now we're reloading all the signals at which point we will move everything back to marvin. Matt says the reload will probably be done Monday, then another day or two to copy everything back to marvin.
@SETIEric

ID: 1645119 · Report as offensive
Claggy
Volunteer tester

Send message
Joined: 5 Jul 99
Posts: 4654
Credit: 47,066,272
RAC: 1,077
United Kingdom
Message 1645120 - Posted: 21 Feb 2015, 23:41:31 UTC - in response to Message 1645119.  

Thanks for the update Eric.

Claggy
ID: 1645120 · Report as offensive
Profile HAL9000
Volunteer tester
Avatar

Send message
Joined: 11 Sep 99
Posts: 6290
Credit: 166,283,690
RAC: 61,345
United States
Message 1645131 - Posted: 22 Feb 2015, 0:19:07 UTC

Gotta love those "That can't be happening... but it is happening" moments.

Thanks for the update before you get back to your other 50 things that need to all be done at the same time.
SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the BP6/VP6 User Group today!
ID: 1645131 · Report as offensive
Profile Dimly Lit Lightbulb 😀
Volunteer tester
Avatar

Send message
Joined: 30 Aug 08
Posts: 14529
Credit: 3,174,347
RAC: 10,676
United Kingdom
Message 1645133 - Posted: 22 Feb 2015, 0:28:58 UTC - in response to Message 1645131.  

Gotta love those "That can't be happening... but it is happening" moments.

Thanks for the update before you get back to your other 50 things that need to all be done at the same time.

Fifty? Last I heard it was 159 :)

Thanks for the update Eric :)
ID: 1645133 · Report as offensive
Profile AngelaProject Donor
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 16 Oct 07
Posts: 12242
Credit: 15,186,633
RAC: 21,480
United States
Message 1645159 - Posted: 22 Feb 2015, 3:17:30 UTC

Thank you for the update Pookers. You may now have a cupcake.
ID: 1645159 · Report as offensive
Profile JaundicedEyeProject Donor
Avatar

Send message
Joined: 14 Mar 12
Posts: 2840
Credit: 23,326,439
RAC: 25,503
United States
Message 1645180 - Posted: 22 Feb 2015, 4:40:09 UTC

The harder you run, the behinder you gets....

Your efforts are appreciated.

:D..g
"Sour Grapes make a bitter Whine." " : >
ID: 1645180 · Report as offensive
Profile Shannock9
Avatar

Send message
Joined: 4 Jul 99
Posts: 1396
Credit: 628,812
RAC: 80
United Kingdom
Message 1645205 - Posted: 22 Feb 2015, 6:04:08 UTC

Thank you for the update and all your dedication.

ID: 1645205 · Report as offensive
Profile UliProject Donor
Volunteer tester
Avatar

Send message
Joined: 6 Feb 00
Posts: 10846
Credit: 5,742,720
RAC: 59
Germany
Message 1645212 - Posted: 22 Feb 2015, 6:26:38 UTC

Thanks for the update Eric.


BTW the shirt count is less than seven. Will try and update thing tomorrow.
Pluto will always be a planet to me.

Seti Ambassador
ID: 1645212 · Report as offensive
rob smith
Volunteer tester

Send message
Joined: 7 Mar 03
Posts: 14244
Credit: 192,321,297
RAC: 257,149
United Kingdom
Message 1645233 - Posted: 22 Feb 2015, 10:03:26 UTC - in response to Message 1645159.  

Thank you for the update Pookers. You may now have a cupcake.


Not indulging in bribery were we?


Thanks for the update Eric, and I trust you enjoyed the cupcake ;-)
Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?
ID: 1645233 · Report as offensive
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 33404
Credit: 10,676,714
RAC: 9,761
Belgium
Message 1645244 - Posted: 22 Feb 2015, 10:30:11 UTC

Thank you for the update, Eric:)

rOZZ
MUSIC
ID: 1645244 · Report as offensive
Profile MikeProject Donor
Volunteer tester
Avatar

Send message
Joined: 17 Feb 01
Posts: 30105
Credit: 52,632,918
RAC: 21,197
Germany
Message 1645265 - Posted: 22 Feb 2015, 12:18:54 UTC - in response to Message 1645244.  

Thank you for the update, Eric:)


+100
With each crime and every kindness we birth our future.
ID: 1645265 · Report as offensive
Profile James SotherdenProject Donor
Avatar

Send message
Joined: 16 May 99
Posts: 10234
Credit: 75,780,566
RAC: 65,535
United States
Message 1645523 - Posted: 23 Feb 2015, 6:09:58 UTC - in response to Message 1645233.  

Thank you for the update Pookers. You may now have a cupcake.


Not indulging in bribery were we?


Thanks for the update Eric, and I trust you enjoyed the cupcake ;-)


Of course she was:) I bet that cupcake was awesome too!
And thanks for the update Eric. We know you have many irons in the fire.
[/quote]

Old James
ID: 1645523 · Report as offensive
Profile [SETI.Germany] Sutaru Tsureku (aka Dirk :-)
Volunteer tester

Send message
Joined: 6 Apr 07
Posts: 7084
Credit: 121,433,667
RAC: 24,474
Germany
Message 1645926 - Posted: 24 Feb 2015, 9:28:25 UTC - in response to Message 1645119.  

Eric, thanks for the update.
ID: 1645926 · Report as offensive
Darth Beaver
Avatar

Send message
Joined: 20 Aug 99
Posts: 6602
Credit: 18,483,735
RAC: 22,468
Australia
Message 1646100 - Posted: 24 Feb 2015, 22:51:20 UTC

Thank's for the update Eric

ID: 1646100 · Report as offensive
Profile Chris SCrowdfunding Project Donor
Volunteer tester
Avatar

Send message
Joined: 19 Nov 00
Posts: 39383
Credit: 28,091,876
RAC: 42,853
United Kingdom
Message 1647299 - Posted: 27 Feb 2015, 15:03:53 UTC

I told Eric to stick to MSDOS 5 and DBase III + but he would insist on using this new fangled Unix stuff ......

Thanks for the update :-)
ID: 1647299 · Report as offensive
OzzFan
Volunteer tester
Avatar

Send message
Joined: 9 Apr 02
Posts: 15391
Credit: 52,882,589
RAC: 12,367
United States
Message 1647301 - Posted: 27 Feb 2015, 15:09:56 UTC - in response to Message 1647299.  

New fangled? Unix has been around a lot longer than MS-DOS! :-P
ID: 1647301 · Report as offensive
Profile Chris SCrowdfunding Project Donor
Volunteer tester
Avatar

Send message
Joined: 19 Nov 00
Posts: 39383
Credit: 28,091,876
RAC: 42,853
United Kingdom
Message 1647307 - Posted: 27 Feb 2015, 15:22:45 UTC

Unix derives from the original AT&T Unix, developed in the 1973 at the Bell Labs research center, which was initially intended for use inside the Bell System. AT&T licensed Unix to outside parties from the late 1970s. MSDOS1 debuted in May 1981.

So commercially speaking about the same timescales. But we digress.
ID: 1647307 · Report as offensive
Profile Pooh Bear 27
Volunteer tester
Avatar

Send message
Joined: 14 Jul 03
Posts: 3222
Credit: 2,935,261
RAC: 0
United States
Message 1647326 - Posted: 27 Feb 2015, 16:34:47 UTC - in response to Message 1647307.  
Last modified: 27 Feb 2015, 16:35:05 UTC

MSDOS was based off CP/M which was developed in 1973-1974. So even the beginnings of both programs are in the same timeline.
ID: 1647326 · Report as offensive
Profile JaundicedEyeProject Donor
Avatar

Send message
Joined: 14 Mar 12
Posts: 2840
Credit: 23,326,439
RAC: 25,503
United States
Message 1647335 - Posted: 27 Feb 2015, 16:59:10 UTC

Remember PET DOS? Now THERE was a stable system.

:))
"Sour Grapes make a bitter Whine." " : >
ID: 1647335 · Report as offensive
w1hueProject Donor
Volunteer tester

Send message
Joined: 4 Aug 00
Posts: 69
Credit: 3,306,295
RAC: 2,813
United States
Message 1647432 - Posted: 27 Feb 2015, 20:24:45 UTC - in response to Message 1647335.  

Remember PET DOS? Now THERE was a stable system. :))

A fine example of KISS implementation! :-)
ID: 1647432 · Report as offensive
1 · 2 · Next

Message boards : Technical News : Latest Astropulse Status


 
©2017 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.