Message boards : News : New BHspin application

New BHspin application

Post to thread Subscribe


AuthorMessage
Grzegorz Wiktorowicz
Project developer
Project scientist

Send message
Joined: 25 Feb 15
Posts: 43
Credit: 5,684,705
RAC: 0
Message 737 - Posted: 12 Nov 2015, 15:51:28 UTC

As you might have noticed we added a new application recently. It is devoted to investigate the spin evolution of black holes.

When a black hole accretes matter, at the same time it accretes the angular momentum, which results in faster spinning. In this model we examine the influence of this process. What makes it particularly interesting is the fact the the LIGO observatory of gravitational waves started to operate recently. Therefore, in the near future, our theoretical predictions will be checked against observation.

Wojciech Gładysz, who cooperates with us in this project prepared a longer description of this problem which I posted in the Science section. I invite you to take a look.

I hope that you will become interested in this research!
Grzegorz Wiktorowicz
Astronomical Observatory
University of Warsaw
ID: 737 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
max09

Send message
Joined: 19 Oct 15
Posts: 4
Credit: 5,173,122
RAC: 0
Message 743 - Posted: 14 Nov 2015, 17:50:43 UTC - in response to Message 737.  

Jest problem z czasami zadań... Na każdym z moich komputerów planowany czas to 2 godziny, a potem obliczanie trwa o wiele dłużej. Z czego to się bierze?
ID: 743 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Nemrod

Send message
Joined: 21 Feb 15
Posts: 15
Credit: 1,620,571
RAC: 1
Message 744 - Posted: 14 Nov 2015, 22:22:03 UTC - in response to Message 743.  

Jeśli przekroczył 5 godzin, a końca nie widać, to oznacza, że trafiłeś na uszkodzone zadania. Sam musiałem swoje anulować, bo liczyły się bez końca.
ID: 744 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
max09

Send message
Joined: 19 Oct 15
Posts: 4
Credit: 5,173,122
RAC: 0
Message 747 - Posted: 15 Nov 2015, 13:27:00 UTC - in response to Message 744.  

Takie mi się nie zdarzyły... Za to miałem takie co miały trwać parę godzin, a trwały 20, ale się kończyły. Za to wszystkie nowe z BHspin mają niedoszacowane czasy...
ID: 747 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
christian barrett

Send message
Joined: 26 Sep 15
Posts: 1
Credit: 542,583
RAC: 0
Message 749 - Posted: 15 Nov 2015, 15:03:09 UTC

there is an issue with estimated time of completion with these new units. it says 2 minutes to complete when its 3+ hours. unfortunately my machine downloaded so many that the deadline will pass before I finish a fraction of them.
ID: 749 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
max09

Send message
Joined: 19 Oct 15
Posts: 4
Credit: 5,173,122
RAC: 0
Message 771 - Posted: 19 Nov 2015, 15:55:47 UTC

The same for me. Incorrect time causes lot of unneccessary downloads -> lot of unfinished tasks for everyone -> lot of errors -> not validated tasks -> wasting of time and credits of people who participate. Please fix it ASAP or turn off BHspin application...
ID: 771 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Grzegorz Wiktorowicz
Project developer
Project scientist

Send message
Joined: 25 Feb 15
Posts: 43
Credit: 5,684,705
RAC: 0
Message 799 - Posted: 24 Nov 2015, 19:39:01 UTC - in response to Message 771.  

Sorry to all for this problem and thanks for notifying us! We were trying to find out where the problem lies but up to now we don't know. On our test computers we didn't encounter such problems. Probably some systems in a very uncommon case go into endless loop. In the future version of the code, which should be prepared in a few/several weeks, we will add additional output to investigate this problem.

Currently the data from this BHspin application is strongly needed by ongoing project connected with the observations of gravitational waves. As you may know the LIGO observatory have just started to operate after significant upgrades and a lot of people are looking forward to first results.

If you keep obtaining this error with BHspin app, please switch to ULX. We hope that this problem will be solved soon.
Grzegorz Wiktorowicz
Astronomical Observatory
University of Warsaw
ID: 799 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
cyrusNGC_224@P3D

Send message
Joined: 21 Feb 15
Posts: 42
Credit: 187,859,711
RAC: 10,333
Message 1051 - Posted: 28 Jan 2016, 18:26:20 UTC

What does the new app version (0.09) do different?
ID: 1051 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Krzysztof Piszczek - wspieram Polski projekt BOINC
Project administrator
Project developer
Project tester
Avatar

Send message
Joined: 4 Feb 15
Posts: 573
Credit: 60,033,800
RAC: 12,825
Message 1052 - Posted: 28 Jan 2016, 19:15:16 UTC - in response to Message 1051.  

Nothing at the moment. We prepare new version for new starting parameters in next WU batches.
Krzysztof 'krzyszp' Piszczek

Member of Radioactive@Home project team
Radioactive Android Map
Tsu
ID: 1052 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Post to thread

Message boards : News : New BHspin application