Posts by Gunnar Hjern
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1) Message boards : News : Server maintenance on 07.10.2018 (Message 6385)
Posted 11 Oct 2019 by Gunnar Hjern
And WUs are available now!


But not any more...

The latest batch was only half the size and lasted less than two days!!!

I cannot but wonder if the project isn't coming to its very end now?

When "theSkyNet/POGS" ended last year it happened totally without any warnings from the admins!
(Probably to minimize the set of remaining tasks circulating out in the grid.)
Is this project maybe heading in the same direction?

//Gunnar

Hope not, but if this continues I will be pulling my 100 plus threads out. I get outages, but having them without a word as to why is disheartening.


More tasty WU-food! :-)

Seems like this batch is at least a good million if not even more. That's really nice!, Thank you admins for that!

Let's hope the Asteroids project carries on, and gives good scientific results too!

Have a good, crunchy weekend!! :-)

//Gunnar
2) Message boards : News : Server maintenance on 07.10.2018 (Message 6383)
Posted 10 Oct 2019 by Gunnar Hjern
And WUs are available now!


But not any more...

The latest batch was only half the size and lasted less than two days!!!

I cannot but wonder if the project isn't coming to its very end now?

When "theSkyNet/POGS" ended last year it happened totally without any warnings from the admins!
(Probably to minimize the set of remaining tasks circulating out in the grid.)
Is this project maybe heading in the same direction?

//Gunnar
3) Message boards : News : Server maintenance on 07.10.2018 (Message 6379)
Posted 5 Oct 2019 by Gunnar Hjern
Hi Nick!

I certainly agree with you there!!
It's a pity that the admins cannot supply with the WUs in time, or AT LEAST TELL US WHY there is a shortage!

I'm mostly into physics BOINC projects, and just now I had to switch some of my starving computers over to Milkyway@home instead.
In just a couple of days I'll have to switch all the rest of them too, and then it will take a LOOOONG time before I try on the asteroids again! :-(

Hope that there will be more WUs before Monday.

Have a nice weekend!!!

//Gunnar
4) Message boards : News : New models reconstructed from Gaia and Lowell photometry (Message 6374)
Posted 2 Oct 2019 by Gunnar Hjern
It seems as we're out of work again! :-(

I just wonder why the new batch didn't last more than aprox. 6 days this time, compared to normally about 11 days???
The all over computational speed doesn't seem to have increased enough to explain it, at least not according to BoincStats.
Was the batch smaller or were there more WUs cancelled this time?

//Gunnar
5) Message boards : News : Server maintenance on 07.10.2018 (Message 6372)
Posted 2 Oct 2019 by Gunnar Hjern
Hi David!

Seems that we're temporarily out of work for the moment, but I have PM:ed one of the admins so hopefully there will be new WUs soon. (This usually happens twice a month or so.)

Just keep the computer running and it will ask the servers regularly and get tasks as soon as they appear on the server.

Have a nice week!!

//Gunnar
6) Message boards : News : Server maintenance on 07.10.2018 (Message 6362)
Posted 24 Sep 2019 by Gunnar Hjern
More crunchy WU-food!, yummy yummy!!! :-)

(see also news-thread with link to new interesting paper:
http://asteroidsathome.net/boinc/forum_thread.php?id=772 )

//Gunnar
7) Message boards : News : New models reconstructed from Gaia and Lowell photometry (Message 6359)
Posted 24 Sep 2019 by Gunnar Hjern
Hi Josef!

Thanks for the paper!! Now I have plenty to read this weekend. :-)

We'd love to keep on crunching, but right now there's a certain lack of WU:s.
It would be good if you could load up some new ones on the server today.

Kindest regards,
Gunnar
8) Message boards : News : Server maintenance on 07.10.2018 (Message 6355)
Posted 22 Sep 2019 by Gunnar Hjern
Hi Wolfman!

I do agree with you in both these questions:

The WU bin at the server seems to go empty every 14:th day or so, and often not to be refilled until the next Thursday. That discourage many from running this project at all. On the other hand it encourage many existing users to setting their work buffer to at least 5 days or more. I think that is a bit bad habit and have negative consequences both for the server which has to keep track of about 350,000 WUs "in flight", and it is also bad for the users who gets very big pending bins before being credited for the work.

I have also noticed that the Cuda application doesn't seem to be too efficient. I only have a GTX 750Ti and a GTX 960 in my computers, and they are just about 3 times as efficient as a single thread on a slow hyper-threaded XEON E3-1245 (not the sharpest knife in the box). I know far too little about Cuda programming to be able to tell why, or how the application should be rewritten to better utilize the massively parallel GPU architecture.

I hope the admins can find time to address these issues soon, and also to write a bit more about the scientific progress of the project, which I am quite curious about.

Happy Crunching to you all!!!

//Gunnar
9) Message boards : Problems and bug reports : WUs not getting validated (Message 6351)
Posted 11 Sep 2019 by Gunnar Hjern
Now all those pending tasks have been listed as validated, and also duly credited!
It seems obvious that this was all consequences of the ongoing insertion of new WUs in the database.
The question can be regarded as SOLVED!
Happy crunching!!! :-)
//Gunnar
10) Message boards : Problems and bug reports : WUs not getting validated (Message 6350)
Posted 10 Sep 2019 by Gunnar Hjern
Hi!

I have not seen any validated tasks after approx. 16:00 UTC this afternoon, but all work I've done gathers in the pending bin - now nearly 1000 tasks there!!!

When I had a look at some of the lately finished tasks, I saw that they indeed really ARE finished - minimum quorum of 2 reached - but still they have not been validated. That seems rather odd!

Consider for example these WUs:
http://asteroidsathome.net/boinc/workunit.php?wuid=111650206
http://asteroidsathome.net/boinc/workunit.php?wuid=111650154
http://asteroidsathome.net/boinc/workunit.php?wuid=111649685
http://asteroidsathome.net/boinc/workunit.php?wuid=111640062
http://asteroidsathome.net/boinc/workunit.php?wuid=111642067
http://asteroidsathome.net/boinc/workunit.php?wuid=111644432
....

At the server status page however, there are no reports on any WUs waiting for validation - the "Workunits waiting for validation" number was zero just a short while ago.

Will these WUs eventually be validated anyway, or will they disappear or stay forever in the database?

Should I maybe abort all the rest of the WUs I have, and get fresh new ones from the new batch issued today?

Kindest regards,
Gunnar
11) Message boards : News : Server maintenance on 07.10.2018 (Message 6348)
Posted 10 Sep 2019 by Gunnar Hjern
Hi James!

I do agree with you there - there sure are some dreadful hoggers, hoarding lots of tasks and creating this situation. Personally I don't bite off more than I can crunch in a few days. Now there seems to be new WUs created however! :-)

I don't know if it would help to limit the amount of tasks fetched for each CPU core as I know many other projects are doing. While I was doing a lot of TN-Grid crunching this spring I saw some very strange computers with 3072 cores!! Obviously it was an attempt to fool that limiting system in connection with some form of "Boinc challenge".

//Gunnar
12) Message boards : News : Server maintenance on 07.10.2018 (Message 6346)
Posted 10 Sep 2019 by Gunnar Hjern
Seems to me as the admins wait for nearly a week after running empty before releasing a new batch of WUs. That could be seen when looking at the "Credit per day" diagram on the BoincStats page:
https://www.boincstats.com/stats/134/project/detail/credit

Maybe this is to clear out the rather large cache of "Tasks in progress", which tends to be several hundreds thousands of tasks!! I can believe that is not very nice for the servers to handle.

However, I think that such issues are better dealt with by setting down the deadlines for reissued tasks. Most of the tasks take less than two hours on a modern i5/i7 machine, and even the longest tasks are crunched in about 5 hours on an old mobile Core-II Duo. Therefore I think that the current deadline of 10.5 days is unnecessary long.

//Gunnar
13) Message boards : News : Server is running again (Message 5310)
Posted 8 Apr 2017 by Gunnar Hjern
We can see from the project status page (http://asteroidsathome.net/boinc/server_status.php) that the "db-purge" process is down.
Could that have something to do with it?

I've also noted that something seems weird with the top participant statistics database.
Try the following link:
http://asteroidsathome.net/boinc/top_users.php?sort_by=total_credit&offset=180
and you probably end up in an error message like the following:

Notice: unserialize(): Error at offset 15828 of 16384 bytes in /home/boincadm/projects/boinc/html/user/top_users.php on line 103

Hope the admins can fix it a bit faster this time, so we don't run out of WU's completely like the last time.

Happy Weekend!!!
14) Message boards : Wish list : Statistics for mobile devices (Message 4796)
Posted 24 Feb 2016 by Gunnar Hjern
It's really interesting to see how processors of small and very low energy devices can contribute to projects like asteroids@home! Having completed 118 tasks in the last 3 months with my Samsung Galaxy S3 phone (*) I would like to see 'd like to see some "Top participants/teams/computers"-statistics only for ARM-powered devices. Maybe such statistics would inspire many more participants to engage their mobile equipment in this (and other) Boinc projects.

Kindest regards
Gunnar

PS.
Link to this ARM device:
http://asteroidsathome.net/boinc/show_host_detail.php?hostid=250777
I'm using 3 out of four CPU cores, and that makes the phone a bit slow sometimes when I start a new app and the BOINC app has to step aside, but not disturbingly slow.
15) Message boards : Number crunching : Statistics for ARM-based units? (Message 4777)
Posted 4 Feb 2016 by Gunnar Hjern
After about 3 months my S3 phone finally reached 100 valid WU's. I installed Boinc on it 10 of nov. last year, and let it run on three of its four cores.
I don't think that 100 WU's is any kind world record, but probably it should be in the top quartile.
Can we obtain any statistics and score-boards just for ARM cpu's?




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