1) Message boards : Number crunching : Problem with PABLO tasks (Message 48166)
Posted 30 days ago by Profile robertmiles
hsdecalc, another recent change, probably after the last time I saw the problem.

Note that you must be in the advanced view, not the simple view, to follow the directions below. Click on View to start changing which view you have.

Interesting to know of your experience, and it is also interesting that you do not see this setting.

For me, it is under -
1. My Account
2. Preferences section
3. "When and how BOINC uses your computer"
4. Click on "Computing Preferences" which is on the same line as "When and how BOINC uses your computer"
5. "Processor Usage"
6. In the "Processor Usage" section there is an entry "Suspend work when non-BOINC CPU usage is above"

If you also observe that this problem happens again, I suggest checking BOINC's Activity Log for a message similar to the one I found. To me, finding the same message would be a strong indicator that the same thing is happening on your system.

2) Message boards : Number crunching : Problem with PABLO tasks (Message 48164)
Posted 30 days ago by Profile robertmiles
hsdecalc, I haven't seen the problem lately. My recent changes include installing BOINC 7.8.3, and setting the number of CPU cores BOINC is allowed to use to two less than the total number present.
3) Message boards : Number crunching : Problem with PABLO tasks (Message 47864)
Posted 91 days ago by Profile robertmiles
Interesting to know of your experience, and it is also interesting that you do not see this setting.

[snip]

I finally found it. It was turned on, so I turned it off.
4) Message boards : Number crunching : Problem with PABLO tasks (Message 47862)
Posted 91 days ago by Profile robertmiles
[snip]

I checked "Suspend work when non-BOINC CPU usage is above" in "When and how BOINC uses your computer" under "Preferences" on my account page and noted it was set to 80%. I then set it to 0 which means to run BOINC projects all the time regardless of host CPU usage.

I suggest checking that setting.

[snip]

I don't see a "Suspend work when non-BOINC CPU usage is above" setting, but I would have set it to off. My computer has 8 physical cores plus hyperthreading, which makes it behave like it has 16 cores, and I've found that limiting the number of cores BOINC can use gives better results than limiting the percentage of CPU time it can use on each core. 14 cores are allowed for CPU tasks, leaving one for GPU tasks and one for non-BOINC programs.


Using BOINC 7.6.33 under Windows 10.
5) Message boards : Number crunching : Problem with PABLO tasks (Message 47859)
Posted 94 days ago by Profile robertmiles
Another PABLO task that apparantly went into an endless loop:

http://www.gpugrid.net/workunit.php?wuid=12708240
http://www.gpugrid.net/result.php?resultid=16504434

[snip]

It finally resumed from the checkpoint, and started updating the progress percentage about once a second. The task completed with a few hours, was reported, and has now validated.

This suggests that also enabling debug output between resuming from the checkpoint file and first update of the progress percentage would allow comparing the failed first try to the second try that worked better.

6) Message boards : Number crunching : Problem with PABLO tasks (Message 47855)
Posted 95 days ago by Profile robertmiles
Another PABLO task that apparantly went into an endless loop:

http://www.gpugrid.net/workunit.php?wuid=12708240
http://www.gpugrid.net/result.php?resultid=16504434

It reached:
55.160% progress, 1d 10:29:13 elapsed, --- remaining
no change to these numbers other than elapsed for at least 12 hours

using GTX 1080 with 385.28 driver, and i7-5980X CPU, BOINC 7.6.33

I suspended it and installed the 385.41 driver (without the 3D sections).

It now indicates 55.160% progress, 03:38:48 elapsed, 04:03:15 remaining. Running has not resumed - BOINC appears to be catching up on other GPU work.

This suggests that the problem is soon after writing a checkpoint, but before anything that does the next progress increase. Resuming from a checkpoint instead does not appear to give the problem.

NO error messages on the screen, or in any file in the slot that looked likely to be a non-empty text file.
7) Message boards : Number crunching : Problem with PABLO tasks (Message 47797)
Posted 113 days ago by Profile robertmiles
Now using the GTX 1080, which appears to have stopped the problem.

Some PABLO tasks run for an unexpectedly long time now, but they finish and verify properly.
8) Message boards : Frequently Asked Questions (FAQ) : Possible grants (Message 47781)
Posted 120 days ago by Profile robertmiles
Cancer Research Grants
http://www.nvidia.com/object/compute-the-cure-research-grants.html
9) Message boards : Number crunching : Problem with PABLO tasks (Message 47750)
Posted 128 days ago by Profile robertmiles
Another task with the problem:

http://www.gpugrid.net/result.php?resultid=16442636
http://www.gpugrid.net/workunit.php?wuid=12657605

I've bought a GTX 1080, and have told BOINC not to download any more GPU workunits for now so all of them can finish before I install the new graphics board tomorrow.
10) Message boards : Number crunching : Problem with PABLO tasks (Message 47748)
Posted 129 days ago by Profile robertmiles
What setting are you using for:
"Use at most X% of CPU time"

If you're not using 100%, can you try it and see if it fixes the problem?

100%


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