1) Message boards : Number crunching : Bad batch of WU's (Message 49329)
Posted 61 days ago by Profile robertmiles
Hi Erich,

As Richard confirmed earlier in the thread there is a mechanism whereby tasks are automatically withdrawn after eight failures and it seems this is being relied on to remove the faulty batches (for example http://www.gpugrid.net/workunit.php?wuid=13443881).


Most of us are and have been aware of this for sometime. The problem is when a computer gets to many errors it's put on a black list for a time, I know right after I get an error I can't download any WU's for a time.

We should'nt be taking these hits. It's as though he loaded up these last WU's, packed his bags and left.

When the tasks are withdrawn after eight failures, they should also no longer be counted as failures for the eight computers that ran them.

While this is fixed, compute errors in 2015 and earlier years should be removed from the lists of failures for computers, even for workunits that never had a successful task.
2) Message boards : Number crunching : Bad batch of WU's (Message 49290)
Posted 64 days ago by Profile robertmiles
Could you check if this is due to a missing file that should have been sent with the task?

All the failed / failing tasks over the last four days have had the exact string

PABLO_p27_wild

in their name. I can see that I've completed at least one successfully with that string: also, at least one other with PABLO_p27_O43806_wild

I'll go and search the message logs to see what I can find, but I think any completely missing files would show up as a problem at the download stage, and never get as far as attempting to run. I think it's more likely that the contents are badly formatted in some way, and it won't be possible to compare good and bad after the event.

Edit - well, e173s16_e149s4p1f23-PABLO_p27_wild_0_sj403_IDP-1-2-RND2043 had file names with the workunit name embedded, like the second example in my comparison example earlier. I think that Pablo, or whoever is submitting the work on Pablo's behalf, might be using the wrong script/template when preparing the workunits.

I'd expect the download stage to fail if the file was missing on the server, but only if the name of the file was included on the list of files sent with the task to tell the client what files to download before starting the task.

If the name of the file was missing from that list, I'd expect download stage to download all the files on the list, report success for that stage, and the problem to become visible only when the application tries to open the file.
3) Message boards : Number crunching : Bad batch of WU's (Message 49280)
Posted 65 days ago by Profile robertmiles
Two of my recent PABLO tasks gave Error while computing, with this error message in the stderr file:

ERROR: file mdioload.cpp line 81: Unable to read bincoordfile

Could you check if this is due to a missing file that should have been sent with the task?
4) Message boards : Multicore CPUs : Second computer setup (Message 49232)
Posted 77 days ago by Profile robertmiles
Where can I find a way to make separate choices of GPUGRID settings for home and work computers?

You should be able to see the settings by ignoring those warning messages.

Then, go to "Your computers"
http://www.gpugrid.net/hosts_user.php
and in the "Details" section, choose the appropriate location (Home or Work) for each machine.

I tried that. I was able to find a way to set the location of each computer to home, work or school, but no other settings specific to just one location. Without a way to do settings specific to a location, setting the location appears to have no value for GPUGRID use - it does nothing useful.
5) Message boards : Multicore CPUs : Second computer setup (Message 49230)
Posted 77 days ago by Profile robertmiles
When I try to set up CPU-only work for my second computer, I get several warning messages.

The ones I could capture are these:

Warning: Creating default object from empty value in /home/ps3grid/projects/PS3GRID/html/inc/prefs_util.inc on line 218

Warning: Creating default object from empty value in /home/ps3grid/projects/PS3GRID/html/inc/prefs_util.inc on line 218

Warning: Creating default object from empty value in /home/ps3grid/projects/PS3GRID/html/inc/prefs_util.inc on line 218

Warning: Creating default object from empty value in /home/ps3grid/projects/PS3GRID/html/project/project_specific_prefs.inc on line 240

Also, I could not find any way to set up different choices for my two computers (calling them home and work).

The second computer will not boot with a GPU currently suitable for GPUGRID GPU tasks, so I NEED different settings for the two computers, unless only one is to participate in GPUGRID.

Where can I find a way to make separate choices of GPUGRID settings for home and work computers?
6) Message boards : Graphics cards (GPUs) : No new GPU workunits (Message 49203)
Posted 88 days ago by Profile robertmiles
There appear to have been no new GPU workunits for the last 24 hours. Could you mention a reason for this? How long do you plan to let this continue?

Switching from GPU workunits to CPU workunits like this can present a problem for users who already allow a variety of CPU tasks - neither of my computers has downloaded any of the new CPU workunits yet, apparently because the statistics from previous GPU tasks tell them to only wait for more of the GPU tasks.
7) Message boards : Number crunching : Problem with PABLO tasks (Message 48166)
Posted 219 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.

8) Message boards : Number crunching : Problem with PABLO tasks (Message 48164)
Posted 219 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.
9) Message boards : Number crunching : Problem with PABLO tasks (Message 47864)
Posted 280 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.
10) Message boards : Number crunching : Problem with PABLO tasks (Message 47862)
Posted 280 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.


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