Message boards : Number crunching : Some task run longer than usual
Message board moderation

To post messages, you must log in.

1 · 2 · 3 · Next

AuthorMessage
Hal Bregg
Avatar

Send message
Joined: 22 Oct 18
Posts: 19
Credit: 3,186,503
RAC: 0
Message 3713 - Posted: 22 Aug 2019, 20:17:58 UTC

Hello,

I noticed that some of my tasks run for nearly 3 hours compared to the usual 1h 15m, approximately. This is happening on the same Linux host with i3-2100 CPU.
Any particular reason why?
ID: 3713 · 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: 841
Credit: 144,180,465
RAC: 2
Message 3714 - Posted: 23 Aug 2019, 12:12:12 UTC - in response to Message 3713.  

Probably you got new work units (batch _283_) which work on new computation data set.
Krzysztof 'krzyszp' Piszczek

Member of Radioactive@Home team
My Patreon profile
Universe@Home on YT
ID: 3714 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Hal Bregg
Avatar

Send message
Joined: 22 Oct 18
Posts: 19
Credit: 3,186,503
RAC: 0
Message 3715 - Posted: 23 Aug 2019, 15:25:19 UTC - in response to Message 3714.  

Probably you got new work units (batch _283_) which work on new computation data set.


Thanks, Krzysztof.

Is this one from a new batch?
universe_bh2_180328_263_7626907374_20000_1-999999_915200_1

ID: 3715 · 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: 841
Credit: 144,180,465
RAC: 2
Message 3716 - Posted: 23 Aug 2019, 16:19:33 UTC - in response to Message 3715.  

No, this is "old" one...

New ones have "_283_" instead of "_263_" in name.

Also, soon the number will increase as this is batch number ascending on every task generation.
Krzysztof 'krzyszp' Piszczek

Member of Radioactive@Home team
My Patreon profile
Universe@Home on YT
ID: 3716 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Guy PFLIEGER HR

Send message
Joined: 4 May 19
Posts: 10
Credit: 13,588,667
RAC: 0
Message 3717 - Posted: 23 Aug 2019, 16:34:50 UTC - in response to Message 3713.  

You are true i noticed the same with Windows 10
but i tell me one question
I compute the whole day with 44 processors and i have 529 tasks solved in one day
So i came to 44 tasks solved every 2 hours
The server say that 100 tasks are solved in 2 hours and 6 minutes and there are 2200 user connected at the project
So i tell me truly one question: Is the server saying true or the other make only a few work for universe@home
I am in a trouble!

Best Regards
Guy PFLIEGER France
ID: 3717 · 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: 841
Credit: 144,180,465
RAC: 2
Message 3718 - Posted: 23 Aug 2019, 17:29:25 UTC - in response to Message 3717.  
Last modified: 23 Aug 2019, 17:30:42 UTC

You have to remember that for most users this project isn't only one on their machines :)

Also, I can use more then 140 threads but usually only one of my host compute WU's all day :)

Also, on my ARM machine 1 new WU needs about 12 hours to finish.

Edit:
In last 24 hours was finished 116'000 work units.
ID: 3718 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Jim1348

Send message
Joined: 28 Feb 15
Posts: 253
Credit: 200,562,581
RAC: 0
Message 3719 - Posted: 23 Aug 2019, 20:06:07 UTC - in response to Message 3718.  

It is a clear difference here on an i7-8700 (Ubuntu 18.04).
The "263" take 36 minutes.
The "283" take 2 hours.

I am glad for the longer ones actually.
ID: 3719 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Guy PFLIEGER HR

Send message
Joined: 4 May 19
Posts: 10
Credit: 13,588,667
RAC: 0
Message 3720 - Posted: 24 Aug 2019, 3:29:35 UTC - in response to Message 3718.  

116000/24=4833 tasks solved in one hour
one tasks solved every 1,38second
100 tasks solved every 134.25second
100 tasks solved every 0.0034 hours
There is truly a problem with the server
Best Regards
Guy PFLIEGER France
ID: 3720 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Guy PFLIEGER HR

Send message
Joined: 4 May 19
Posts: 10
Credit: 13,588,667
RAC: 0
Message 3721 - Posted: 24 Aug 2019, 3:55:09 UTC - in response to Message 3720.  

other way to look the problem:
The server receive every 24 hours 116000 tasks
i compute every day 529 tasks
the server says 100 tasks computed every 2.09 hours
so the true value of my percentage is: (529/116000)*100=0.4560%
If i look the server i do:
44 tasks every 2 hours so the percentage is a litle higher as 44%

Best Regards
Guy PFLIEGER
ID: 3721 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
JagDoc
Help desk expert

Send message
Joined: 21 Feb 15
Posts: 83
Credit: 873,439,097
RAC: 988
Message 3722 - Posted: 24 Aug 2019, 8:21:25 UTC

My Odroid-N2 (ARM64 with Ubuntu 18.04):
The "263" take 2 hours.
The "283" take 6 hours.
ID: 3722 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
mmonnin

Send message
Joined: 2 Jun 16
Posts: 169
Credit: 317,253,046
RAC: 6
Message 3724 - Posted: 24 Aug 2019, 13:08:50 UTC

Credit is going to plummet since they both receive the same 666.67 credit. Gridcoin might go elsewhere.
ID: 3724 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
JugNut

Send message
Joined: 11 Mar 15
Posts: 37
Credit: 271,242,973
RAC: 0
Message 3726 - Posted: 25 Aug 2019, 2:25:58 UTC - in response to Message 3724.  

I have a small pile of android devices that have been happily crunching universe for years. One of the faster ones(for android) used to average a WU in about 6 - 8 hours, it now averages 24hrs +.

And as for the slowest android devices I run here? err If one of the new WU ever finishes i'll let you know. So far after 35 hrs it's 74% complete..

Oh well I guess that's one way to reduce load on the servers :(
ID: 3726 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
EG

Send message
Joined: 15 Dec 15
Posts: 7
Credit: 253,481,367
RAC: 0
Message 3727 - Posted: 25 Aug 2019, 6:53:50 UTC - in response to Message 3724.  

Credit is going to plummet since they both receive the same 666.67 credit. Gridcoin might go elsewhere.


Triple the work is the same as reducing the compensation 66% for the same work....

Getting $150.00 an hour going down to $50.00 per hour?

I'll be finding myself a new job......
ID: 3727 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Christopher

Send message
Joined: 18 May 17
Posts: 16
Credit: 3,215,924
RAC: 0
Message 3729 - Posted: 25 Aug 2019, 13:07:38 UTC
Last modified: 25 Aug 2019, 13:21:52 UTC

Is a credit increase planned? Proportionally, a WU would be worth just shy of 2000 right now...

Of course, this is based on compute time not number of operations. Perhaps the workload isn't optimized and is leaving some parts of the silicon idle during some cycles depending on architecture. Did anyone notice any difference in number of gigaflops reported in the properties section of the WUs?
ID: 3729 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Christopher

Send message
Joined: 18 May 17
Posts: 16
Credit: 3,215,924
RAC: 0
Message 3730 - Posted: 25 Aug 2019, 15:16:12 UTC - in response to Message 3729.  

For now I will switch work to another project until this gets settled I guess...
ID: 3730 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Jim1348

Send message
Joined: 28 Feb 15
Posts: 253
Credit: 200,562,581
RAC: 0
Message 3731 - Posted: 25 Aug 2019, 15:40:49 UTC

I never looks at credits and have no idea what they are. But I just added another machine anyway.
ID: 3731 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Dataman
Avatar

Send message
Joined: 24 Feb 15
Posts: 32
Credit: 609,507,165
RAC: 0
Message 3732 - Posted: 25 Aug 2019, 15:42:18 UTC

I run 3 x Threadrippers, 2 x 8700K and 17 x ARM machines at Universe right now (188 threads). I do not mind if the wu's are larger and take longer to run but you need to immediately adjust credits proportionally. Otherwise participation will plummet. Of course if that is acceptable to you, then so be it.
Cheers
ID: 3732 · 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: 841
Credit: 144,180,465
RAC: 2
Message 3733 - Posted: 25 Aug 2019, 16:12:00 UTC

I think, we give too much credits recently. Seriously, at the time when I set credit it takes 6 hours to finish on single core on i7 CPU.
Recently, some tasks finish in 18 minutes on same machine.

I really don't like to be a person, who make "inflation" on BOINC projects...
Krzysztof 'krzyszp' Piszczek

Member of Radioactive@Home team
My Patreon profile
Universe@Home on YT
ID: 3733 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Dataman
Avatar

Send message
Joined: 24 Feb 15
Posts: 32
Credit: 609,507,165
RAC: 0
Message 3734 - Posted: 25 Aug 2019, 17:38:26 UTC - in response to Message 3733.  

I think, we give too much credits recently. Seriously, at the time when I set credit it takes 6 hours to finish on single core on i7 CPU.
Recently, some tasks finish in 18 minutes on same machine.

I really don't like to be a person, who make "inflation" on BOINC projects...

OK, it is your project but my machines. I have moved them to Einstein. Good luck!
ID: 3734 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Jim1348

Send message
Joined: 28 Feb 15
Posts: 253
Credit: 200,562,581
RAC: 0
Message 3735 - Posted: 25 Aug 2019, 21:07:48 UTC - in response to Message 3733.  

I really don't like to be a person, who make "inflation" on BOINC projects...

I like that attitude myself. It gives me more confidence in the science too, which is why I am here.
Keep up the work, and I will do it.
ID: 3735 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
1 · 2 · 3 · Next

Message boards : Number crunching : Some task run longer than usual




Copyright © 2024 Copernicus Astronomical Centre of the Polish Academy of Sciences
Project server and website managed by Krzysztof 'krzyszp' Piszczek