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Canceled Work Units by Server

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Profile Dingo
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Message 1419 - Posted: 29 Mar 2018, 21:56:26 UTC

I have not seen on other projects where the server cancels a work unit after it has been processed and does not give credit ? I only have a few of these but if a user takes the time to process them then they should be allocated some credit.

https://denis.usj.es/denisathome/workunit.php?wuid=103380

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Jean-David Beyer

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Message 2152 - Posted: 23 Jul 2023, 10:29:38 UTC - in response to Message 1419.  

I am getting lots of tasks canceled by server. My machine is 224473. Here ia one of them.

Workunit 7969164
name 	HuVeMOp_20230718132304300078_ORd_k_5-Drouin_MID_5000-conf_907
application 	Human ventricular cell models optimization
created 	18 Jul 2023, 11:26:41 UTC
canonical result 	16968692
granted credit 	48.06
minimum quorum 	2
initial replication 	2
max # of error/total/success tasks 	3, 10, 6
Task
click for details	Computer	Sent	Time reported
or deadline
explain	Status	Run time
(sec)	CPU time
(sec)	Credit	Application
16968692 	224349 	19 Jul 2023, 8:22:35 UTC 	22 Jul 2023, 8:39:49 UTC 	Completed and validated 	2,313.46 	2,279.81 	48.06 	Human ventricular cell models optimization v0.02
windows_x86_64
16968693 	201356 	19 Jul 2023, 8:29:12 UTC 	20 Jul 2023, 4:00:47 UTC 	Completed and validated 	9,879.10 	7,307.09 	48.06 	Human ventricular cell models optimization v0.02
windows_x86_64
17626898 	224473 	22 Jul 2023, 8:22:39 UTC 	22 Jul 2023, 8:49:04 UTC 	Cancelled by server 	0.00 	0.00 	--- 	Human ventricular cell models optimization v0.02
x86_64-pc-linux-gnu


In each case, the server sends out two tasks, but then two day later the server sends me a task for the same work unit. then the second task replies. then my task gets canceled. If the second task is not canceled first, why does the server send me a task, only to cancel it very shortly afterwards, when the second task completes. If this happened only once in a great while, maybe I would not care but 34 in the last few days?
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pututu
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Message 2153 - Posted: 23 Jul 2023, 14:07:12 UTC

There are two task deadlines. One is shown in the boinc manager on the client side and the other is on the server side that hosts the boinc projects. It is up to the project admin to set these two deadlines differently (grace period). Usually project admin sets both the same but I've seen a few boinc projects that set grace period to non-zero. For example in NumberFields@home. See my post here https://numberfields.asu.edu/NumberFields/forum_thread.php?id=454#2737

To reduce task state "cancelled by server", perhaps the admin can add in some grace period?
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Jean-David Beyer

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Message 2154 - Posted: 23 Jul 2023, 17:37:20 UTC - in response to Message 2153.  

To reduce task state "cancelled by server", perhaps the admin can add in some grace period?


Sounds like a good idea to me.
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Dayle Diamond

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Message 2190 - Posted: 20 Sep 2023, 4:59:13 UTC

I'm getting work that's been validated for days, but it's NOT getting cancelled by the server.

https://denis.usj.es/denisathome/workunit.php?wuid=10610647
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Crystal Pellet

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Message 2191 - Posted: 20 Sep 2023, 11:15:33 UTC - in response to Message 2190.  

I'm getting work that's been validated for days, but it's NOT getting cancelled by the server.

https://denis.usj.es/denisathome/workunit.php?wuid=10610647
22500584 223279 16 Sep 2023, 18:44:29 UTC 20 Sep 2023, 4:29:29 UTC Completed and validated 7,297.88 7,273.73 60.66 New human ventricular cell model v0.03 windows_x86_64
22500585 214760 16 Sep 2023, 18:42:40 UTC 18 Sep 2023, 9:24:34 UTC Completed and validated 4,618.68 4,615.95 60.66 New human ventricular cell model v0.03 windows_x86_64
22757401 224548 20 Sep 2023, 4:20:39 UTC 20 Sep 2023, 5:58:05 UTC Completed and validated 5,819.38 5,752.14 60.66 New human ventricular cell model v0.03 windows_x86_64


The first task was returned 9 minutes late, but meanwhile a resend was sent to your computer.
When your computer has not connected the server to report finished tasks or ask for new tasks after the first task received and your machine has already started task 3, your task will not be aborted/cancelled.
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Dayle Diamond

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Message 2192 - Posted: 21 Sep 2023, 5:24:11 UTC - in response to Message 2191.  

Thank you, but unfortunately whatever happened may be more endemic.

My computer regularly connects to the server, and, just in case, I forced an update before making my post.
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Dayle Diamond

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Message 2194 - Posted: 28 Sep 2023, 9:57:47 UTC - in response to Message 2192.  

Here's another task, it has yet to run and I will manually cancel it.
Currently it's _4, after two invalid and two valid results. Yet it was sent to my queue and never retracted.

https://denis.usj.es/denisathome/workunit.php?wuid=10869867
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Message boards : Number crunching : Canceled Work Units by Server