1) Message boards : Number crunching : VM Applications Errors (Message 46284)
Posted 19 Feb 2022 by [TA]Assimilator1
Post:
LHC@Home is not a plug and play project like other BOINC-Projects are.

You can easily run LHC@Home like a plug and play project: if you run Sixtrack only
You can easily run LHC@Home like a plug and play project: if you run one of Atlas / Theory / CMS exclusively and if you keep this setting: "Use at most 100 % of CPU time" (VMs don't like this kind of throttling)

If you want to run all kind of applications LHC@Home offers, you will have to make micro-managing with your client; BOINC will not be able to always give you what you want for your client.


After forgetting why I stopped running LHC last year, I ran it again and quickly ran into problems, not wanting to go through that mammoth post (and spend hours following the dozens of steps!) about how to get VM working properly I tried the 2nd option as above, choosing Theory sim (as it seems to have the most WUs).
But even sticking with that, and when I had 100% cpu time set, I still ran into problems :(, about a dozen WUs are showing "Postponed: VM Environment needed to be cleaned up", now firstly that message is talking past tense, so is it sorted now or is that just bad English and it should say ..."needs to be cleaned up". I thinking perhaps the later because multiple WUs are showing that message, also another 6 WUs are showing the message "Postponed: b" ,and no I haven't typo'd that's all they say :p.
So why am I getting those messages even though I'm only running Theory sim exclusively?
Also, LHC is causing bad system lag, even though I have loads of spare RAM available. What's that about?
Additionally, some WUs are showing ETAs of 10 days! What's that about? (although I don't think any are actually taking that long).
Main rig specs in sig.

I really like the LHC@home projects ideas and the research it's doing for LHC, one of the projects I'm most interested in, but this rubbish VM app is just making it a nightmare and I'm not going to bother if it's going to take hours to fix. I thought I could just run Sixtrack again, but that project seems to often run out of WUs.

PS, Yeti, your user of the day :)
2) Message boards : Number crunching : VM Applications Errors (Message 44898)
Posted 6 May 2021 by [TA]Assimilator1
Post:
I don't recall seeing that on the front page.

Anyway, disabling Atlas seems to have done the trick, no problems caused by LHC running now, but I currently have 14 errored WUs, 13 are for CMS sim, no idea why (exit codes mean nothing to me). Common ones are :-
207 (0x000000CF) EXIT_NO_SUB_TASKS
194 (0x000000C2) EXIT_ABORTED_BY_CLIENT
And a single 1 (0x00000001) Unknown error code

Also the estimated times for some Theory sim WUs are 8-9 days! Lol. But they aren't actually taking that long.
3) Message boards : Number crunching : ATLAS apps unticked, but still getting ATLAS WUs! (Message 44621)
Posted 30 Mar 2021 by [TA]Assimilator1
Post:
Ah yea, you got it, now unticked, thanks :)
4) Message boards : Number crunching : ATLAS apps unticked, but still getting ATLAS WUs! (Message 44587)
Posted 28 Mar 2021 by [TA]Assimilator1
Post:
As per title I disabled the ATLAS apps, I did this because it was taking more CPU resources than was set by BOINC!

And now, after a few weeks strangely, it's downloading ATLAS WUs again! Wth?? Anyone know what's going on? (and yes I have re-confirmed they are still disabled).
For now, I've shut off new WUs completely.

Hoping someone can help, as I would like to continue to contribute to LHC.
5) Message boards : Number crunching : VM Applications Errors (Message 44499)
Posted 16 Mar 2021 by [TA]Assimilator1
Post:
Just thought of a better answer, rather than not run LHC altogether (I want to run it!), I've disabled the Atlas app. Let's see how the other apps behave....
6) Message boards : Number crunching : VM Applications Errors (Message 44498)
Posted 16 Mar 2021 by [TA]Assimilator1
Post:
Well this takes the biscuit, I'd set BOINC to 85% computing time to leave some CPU power for GPU folding.
Last night and this morning I found my system had ground to a crawl and LHC VM was taking 100% CPU time! So I restricted BOINC to 50% and now LHC is 'only' taking ~70%.
What with BOINCs messed up way of trying to balance credit, and now LHC hogging resources I'm done with it :(

But why was it taking 100% when I'd set 85%!? It should of left any spare threads for Rosetta, not try and run another 8 with LHC VM. (that's with Atlas WUs)
7) Message boards : Number crunching : VM Applications Errors (Message 44462)
Posted 8 Mar 2021 by [TA]Assimilator1
Post:
But I now have a WU stuck at 100% and 1.5 days elapsed time!
8) Message boards : Number crunching : VM Applications Errors (Message 44461)
Posted 8 Mar 2021 by [TA]Assimilator1
Post:
In the short to medium term I would've just quit running LHC if I needed to go through all that.

Anyway, some team mates managed to help me - https://forums.anandtech.com/threads/weekly-dc-stats-28feb2021.2591268/post-40454305
Turns out AMD-V was disabled in the bios, and it was called SVM mode, hence I didn't spot it in the manual or bios.
Since enabling it, I've had no errors.
9) Message boards : Number crunching : VM Applications Errors (Message 44429)
Posted 3 Mar 2021 by [TA]Assimilator1
Post:
Thanks for your reply, that's a very large post of yours you linked, is their a particular part I can get away with reading? I don't want to spend hours on this.
10) Message boards : Number crunching : VM Applications Errors (Message 44426)
Posted 2 Mar 2021 by [TA]Assimilator1
Post:
Thanks for your reply.

Never heard of it, what is it?
I don't recall seeing that in the bios, and I don't see it mentioned in the manual...
11) Message boards : Number crunching : VM Applications Errors (Message 44422)
Posted 1 Mar 2021 by [TA]Assimilator1
Post:
I'm getting a ton of errors atm, I had a quick look at the task details, but it doesn't mean much to me.
I've got no errors in Rosetta atm, for what it's worth.

Can anyone help?
12) Message boards : News : CERN and COVID-19 (Message 42282)
Posted 25 Apr 2020 by [TA]Assimilator1
Post:
Yep switched my main cruncher over to R@H & F@H some weeks ago, good to hear LHC pitching in too :)
13) Message boards : Number crunching : Host messing up tons of results (Message 27744)
Posted 17 Apr 2016 by [TA]Assimilator1
Post:
Grrr, DP, slow forum!
14) Message boards : Number crunching : Host messing up tons of results (Message 27743)
Posted 17 Apr 2016 by [TA]Assimilator1
Post:
Lol, and did you actually mean to say 'without any errors till today'? ;)
15) Message boards : Number crunching : Host messing up tons of results (Message 27657)
Posted 16 Dec 2015 by [TA]Assimilator1
Post:
What's the latest on this Eric?
(I've not monitored results in a while, & just caught up with this thread)


Ah good to hear 1 of them replied! :)

One of us)

We're all one team. As I see 12k active users and 20k active hosts it is amazing that a vast impact project has.
SO I urge everyone to check their error and invalid and inconclusive tasks on regular basis to see any kind of irregularities so it could be fixed asap.

When I said 1 of them, I was referring to a user with major host problems, as per this thread.
I never said they weren't part of the project, btw most of us are in different teams ;) :P.
16) Message boards : Number crunching : Host messing up tons of results (Message 27388)
Posted 16 Apr 2015 by [TA]Assimilator1
Post:
Other CPU intensive tasks shouldn't cause any errors.
17) Message boards : Number crunching : Host messing up tons of results (Message 27376)
Posted 12 Apr 2015 by [TA]Assimilator1
Post:
Setting a weeks worth of work is too long really, as you discovered when you got more 8hr WUs. I usually set a cache of 3-4 days.

The only way I know to see how long a WU is going to take is to look at the time 'remaining' in the tasks list. So no you can't 'cherry pick' the longer WUs.

And yea LHC often runs out of WUs, that's normal ;), which is why I have it running alongside other projects.
18) Message boards : Number crunching : Host messing up tons of results (Message 27371)
Posted 11 Apr 2015 by [TA]Assimilator1
Post:
I only see 3 you have as invalid, 2 of those were also invalid for other hosts, looks like those were dodgy WUs. The 3rd maybe down to your machine, but I wouldn't worry about just 1, just keep an eye on your tasks page to make sure they don't grow in number.

Btw why have you cancelled so many WUs?

Host linked as someone seems to of forgotten to do that ;) http://lhcathomeclassic.cern.ch/sixtrack/results.php?hostid=10327477
19) Message boards : Number crunching : Host messing up tons of results (Message 27366)
Posted 10 Apr 2015 by [TA]Assimilator1
Post:
Not sure if this host has already been flagged, but it's got loads of invalids.

http://lhcathomeclassic.cern.ch/sixtrack/show_host_detail.php?hostid=9996388
20) Message boards : Number crunching : Host messing up tons of results (Message 27351)
Posted 9 Apr 2015 by [TA]Assimilator1
Post:
Ah good to hear 1 of them replied! :)


Next 20


©2022 CERN