1) Message boards : ATLAS application : BOINC downloads only 2 ATLAS tasks (Message 35326)
Posted 5 days ago by Toby Broom
Post:
Thanks CP, still no good options to run many ATLAS tasks.
2) Message boards : ATLAS application : BOINC downloads only 2 ATLAS tasks (Message 35283)
Posted 9 days ago by Toby Broom
Post:
Hi David,

Is the max number of CPUs used to calculate the ram estimate?

Thanks

Toby
3) Message boards : ATLAS application : Running ATLAS task switching to "waiting for memory" status (Message 35227)
Posted 14 days ago by Toby Broom
Post:
The information from the appconfig is not known by boinc, so it uses the "The memory allocated to the virtual machine is calculated based on the number of cores following the formula: 2.6GB + 0.9GB * ncores." calculation based on the web settings.


e.g. if app config say use 5Gb but we config say 8 cores then bonic will think it's using 9.8GB and stop tasks if there isn't enough ram.


I assume you could set the number of cores on the web to 1 then it will only use 3.6GB as far as boinc is concerned and start up to 8 tasks if you have 8 core machine.
4) Message boards : LHCb Application : VirtualBox 5.1.x vs. 5.2.x (Message 35219)
Posted 15 days ago by Toby Broom
Post:
I would agree that 5.2.x isn't as reliable but I have had good results from LHCb with 5.2.
5) Message boards : ATLAS application : BOINC downloads only 2 ATLAS tasks (Message 35218)
Posted 15 days ago by Toby Broom
Post:
There was a couple of mails but no follow it seems, I will try again.
6) Message boards : Sixtrack Application : EXIT_DISK_LIMIT_EXCEEDED (Message 35147)
Posted 22 days ago by Toby Broom
Post:
The team is working on it as we speak
7) Message boards : ATLAS application : BOINC downloads only 2 ATLAS tasks (Message 35073)
Posted 22 Apr 2018 by Toby Broom
Post:
I asked them to take a look.
8) Message boards : Number crunching : VirtualBox needed? (Message 35057)
Posted 20 Apr 2018 by Toby Broom
Post:
Seems so on my computer e.g.

Sixtrack 22k sec = 234 cred
ATLAS 28k sec = 520 cred

based on CPU time

I think run time isn't used for calculation of credit, only CPU time.
9) Message boards : ATLAS application : BOINC downloads only 2 ATLAS tasks (Message 35036)
Posted 18 Apr 2018 by Toby Broom
Post:
I can get 3, with no limit setting.
10) Message boards : Number crunching : Boinc memory estimate and LHC Settings (Message 34999)
Posted 13 Apr 2018 by Toby Broom
Post:
With No limit for tasks I get 3 ATLAS. I have the same 3 cores to ensure that the memory estmates are correct.

Before I could run 12x2 tasks concurently but now the limit is 8 Jobs.

I think now you see 5x3 = 15 limit on 16 core machine.

I gave up messing with the settings, ATLAS doesn't work well with other project running at the same time. Therefore I just don't contribute much to ATLAS, if they changes the settings then I will do more.

If you want to run more then you must run mutiple instances of BOINC
11) Message boards : Number crunching : ERROR WHILE COMPUTING (11 WUs out of 50 in the last 2 days) (Message 34954)
Posted 11 Apr 2018 by Toby Broom
Post:
i have less error with the 5.1.x branch with high utilisation, there is some error after switching but they go away after a new batch of WU's
12) Message boards : Number crunching : ERROR WHILE COMPUTING (11 WUs out of 50 in the last 2 days) (Message 34841)
Posted 1 Apr 2018 by Toby Broom
Post:
I sometimes get the Postponed: VM job unmanageable, restarting later. Seems most common after upgradign virtualbox, I just abort them and future tasks are good.

Your PC must be configured OK as Theory and LHCb are running.
13) Message boards : Sixtrack Application : AVX Sixtrack version (Message 34731)
Posted 26 Mar 2018 by Toby Broom
Post:
I think James said that there was a speed up when you run the same WU with and without AVX, since we don't get to do that test it's looks more variable on our end.

I have 1 PC that seems stuck runinig SSE2, the others were running all AVX but seem to have swicthed around in the last few days.
14) Message boards : ATLAS application : Atlas tasks "Postponed: VM job unmanageable, restarting later." (Message 34514)
Posted 28 Feb 2018 by Toby Broom
Post:
Intresting different errors on different OS's?!

I went back to 5.1 seems back to normal, I assume we have to wait for the project to move up to new wrapper.
15) Message boards : ATLAS application : Atlas tasks "Postponed: VM job unmanageable, restarting later." (Message 34511)
Posted 28 Feb 2018 by Toby Broom
Post:
Maybe on Windows its different?

I have 128GB of RAM, with the setting of allow up to 98%, the swap settings are 50% at most, but I don't expect to use any swap with 128GB. I see in task manager that I still have 45GB of un-used memory and 65GB in standby.

I didn't see this issue often with the older version of VirtualBox, hence my comment.
16) Message boards : ATLAS application : Atlas tasks "Postponed: VM job unmanageable, restarting later." (Message 34504)
Posted 28 Feb 2018 by Toby Broom
Post:
I just upgraded from 5.1.30 to 5.2.6 and see the same it was working well before so i can't recommend 5.2.6 for reliable operation.

I will give it another 24hr to see if it's just a kink but will downgrade if I don't see improvements.
17) Message boards : ATLAS application : Only 6 concurrent tasks per computer? (Message 34354)
Posted 10 Feb 2018 by Toby Broom
Post:
I will just leave on 3, I wanted to contribute more to ATLAS but I can get more out of my computer with the settings that are favorable for the other projects.
18) Message boards : ATLAS application : Only 6 concurrent tasks per computer? (Message 34348)
Posted 9 Feb 2018 by Toby Broom
Post:
Maybe the 10k is to limit backend issues like we saw reciently?

The boinc scheduing will work out how many tasks to buffer so that the limits can be reached.
19) Message boards : ATLAS application : Only 6 concurrent tasks per computer? (Message 34316)
Posted 8 Feb 2018 by Toby Broom
Post:
I could only get 3 WU/Host with the unlimited settings, setting back to 8 allowed 8.

before it was 24, is there a plan to allow 24 again?
20) Message boards : Sixtrack Application : AVX Sixtrack version (Message 34296)
Posted 5 Feb 2018 by Toby Broom
Post:
Happy to try for you in a few weeks when I can build my x299 rig


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