Tasks Always Fail on Resume
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Message boards : Windows : Tasks Always Fail on Resume

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David J. Liu
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Message 24560 - Posted: 5 Dec 2017, 19:05:09 UTC

This problem is easily reproducible.

On this computer I only have Collatz in BOINC. Four tasks run concurrently. If I suspend them and resume them, some fail immediately. These tasks run in background using a service account. They use CPU only.

For years tasks work fine as long as they are not interrupted. Resuming a task works correctly once in a while.

What could be the problem?

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Message 24564 - Posted: 6 Dec 2017, 18:29:00 UTC - in response to Message 24560.

Uninstall C Runtimes and Update them 32 bit and 64 bit.
Uninstall the Client also as this sometimes gets hosed.

Hope that helps.
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David J. Liu
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Message 24565 - Posted: 6 Dec 2017, 20:20:05 UTC - in response to Message 24564.

I reinstalled BOINC and Collatz, the system started new tasks. Several minutes later I suspended two of the four tasks and tried to resume them after a few seconds. Both failed with "computation error".

In the past I tried refreshing the entire system and got the same result, although I did not try the suspend-resume cycle so quickly.

Where does the software store low level log messages?

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Message 24571 - Posted: 8 Dec 2017, 20:08:13 UTC

https://boinc.berkeley.edu/wiki/BOINC_Data_directory

Try the above for data locations.
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Working toward a real solution to why programming takes so many versions to get the end product that just keeps getting better with each version. Do Loop of Products!

David J. Liu
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Message 24592 - Posted: 12 Dec 2017, 18:17:45 UTC - in response to Message 24571.
Last modified: 12 Dec 2017, 18:18:10 UTC

Data for individual jobs are stored in named subdirectories under C:\ProgramData\BOINC\slots
Unfortunately, no data were preserved when a task failed to resume.

It ought to be easy to fix bugs that cause the system to not persist the state of a task, however, the developers need to be aware of this, and commit to investigate and fix.

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Message 24605 - Posted: 15 Dec 2017, 14:50:23 UTC

I can say this being a developer it is not easy to track down issues like this, and even harder when funding is zero. I think maybe another project would serve your needs best. I do know the ADMIN Jon works hard to make sure things work but yes the 100% is the mark and you typically get 99% but it looks as if you are in the 1% fall out.

Good luck looking for something that works 100% of the time.

Regards,

Greg - Just another user
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Working toward a real solution to why programming takes so many versions to get the end product that just keeps getting better with each version. Do Loop of Products!


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