Message boards : Number crunching : Very long running Android task, do I leave it going?
Message board moderation

To post messages, you must log in.

AuthorMessage
Peter Hucker
Avatar

Send message
Joined: 30 Oct 16
Posts: 79
Credit: 12,073,933
RAC: 0
Message 4621 - Posted: 2 Feb 2021, 12:40:37 UTC

https://universeathome.pl/universe/result.php?resultid=130033844 has been running for 8.5 days of computation on my Android phone. They're usually about a day. The percentage complete goes to 100 in the normal time, then goes back to zero, like it made a mistake and is trying again. I've seen this before where it takes 2 or 3 goes and it then finishes. Should I leave this one running? It's nearing the deadline. I'm not concerned about credits I'm concerned about making good use of the task and finding out the problem.
ID: 4621 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Profile Krzysztof Piszczek - wspieram ...
Project administrator
Project developer
Project tester
Avatar

Send message
Joined: 4 Feb 15
Posts: 748
Credit: 140,963,131
RAC: 8,204
Message 4622 - Posted: 2 Feb 2021, 14:51:04 UTC - in response to Message 4621.  

Cancel it, please.
It is rare situation but sometimes especially in Linux tasks something going wrong with tasks.
I never found a reason of this behaviour and it is not reproduce even if you run exactly same task on other machine...
Krzysztof 'krzyszp' Piszczek

Member of Radioactive@Home team
My Patreon profile
Universe@Home on YT
ID: 4622 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Peter Hucker
Avatar

Send message
Joined: 30 Oct 16
Posts: 79
Credit: 12,073,933
RAC: 0
Message 4623 - Posted: 2 Feb 2021, 15:07:10 UTC - in response to Message 4622.  

Cancel it, please.
It is rare situation but sometimes especially in Linux tasks something going wrong with tasks.
I never found a reason of this behaviour and it is not reproduce even if you run exactly same task on other machine...
Thanks, I only see it happening on my two Android phones, never on my 7 Windows 10 machines. So shall I in the future cancel anything that jumps back to the start? Might aswell have it go to another machine to try.
ID: 4623 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Profile Krzysztof Piszczek - wspieram ...
Project administrator
Project developer
Project tester
Avatar

Send message
Joined: 4 Feb 15
Posts: 748
Credit: 140,963,131
RAC: 8,204
Message 4624 - Posted: 2 Feb 2021, 19:02:46 UTC - in response to Message 4623.  
Last modified: 2 Feb 2021, 19:04:51 UTC

So shall I in the future cancel anything that jumps back to the start? Might aswell have it go to another machine to try.

Yes.
But usually it is very rare situation, less then 10 tasks in every 1'000'000 on Linux, On Android situation is bit more complicated as is very large number of different 'versions' of system with mix of different additions from different mobile providers...
Krzysztof 'krzyszp' Piszczek

Member of Radioactive@Home team
My Patreon profile
Universe@Home on YT
ID: 4624 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
mmonnin

Send message
Joined: 2 Jun 16
Posts: 155
Credit: 215,699,046
RAC: 100,383
Message 4630 - Posted: 10 Feb 2021, 23:25:31 UTC

My RPIs get a task that run 2-3x as long every couple of days.
ID: 4630 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Peter Hucker
Avatar

Send message
Joined: 30 Oct 16
Posts: 79
Credit: 12,073,933
RAC: 0
Message 4631 - Posted: 11 Feb 2021, 17:22:44 UTC - in response to Message 4630.  
Last modified: 11 Feb 2021, 17:23:02 UTC

My RPIs get a task that run 2-3x as long every couple of days.
Do you notice them restarting? My android phones get some that run two or three times then complete successfully. The percentage resets back to zero once or twice, but the timer keeps running. Very occasionally they repeat several times and approach the deadline, which makes me notice them. It can't be due to interruptions, as one of the phones does nothing but Boinc and is never moved.
ID: 4631 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
mmonnin

Send message
Joined: 2 Jun 16
Posts: 155
Credit: 215,699,046
RAC: 100,383
Message 4632 - Posted: 12 Feb 2021, 11:41:21 UTC - in response to Message 4631.  

My RPIs get a task that run 2-3x as long every couple of days.
Do you notice them restarting? My android phones get some that run two or three times then complete successfully. The percentage resets back to zero once or twice, but the timer keeps running. Very occasionally they repeat several times and approach the deadline, which makes me notice them. It can't be due to interruptions, as one of the phones does nothing but Boinc and is never moved.


The ETA is just very long. Just several minutes in the ETA can be 1day+ when normal run time is like 10 hours.
ID: 4632 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Peter Hucker
Avatar

Send message
Joined: 30 Oct 16
Posts: 79
Credit: 12,073,933
RAC: 0
Message 4633 - Posted: 12 Feb 2021, 16:43:31 UTC - in response to Message 4632.  

My RPIs get a task that run 2-3x as long every couple of days.
Do you notice them restarting? My android phones get some that run two or three times then complete successfully. The percentage resets back to zero once or twice, but the timer keeps running. Very occasionally they repeat several times and approach the deadline, which makes me notice them. It can't be due to interruptions, as one of the phones does nothing but Boinc and is never moved.
The ETA is just very long. Just several minutes in the ETA can be 1day+ when normal run time is like 10 hours.
Not sure what you mean by that.
ID: 4633 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote

Message boards : Number crunching : Very long running Android task, do I leave it going?




Copyright © 2021 Copernicus Astronomical Centre of the Polish Academy of Sciences
Project server and website managed by Krzysztof 'krzyszp' Piszczek