41) Message boards : Number crunching : Setting up a local squid cache for a home cluster - old comments (Message 34327)
Posted 9 Feb 2018 by m
Post:
I once used a Squid proxy running on an old Raspberry Pi., and can confirm that, although
BOINC will use it Ok, and this alone makes a difference, the VMs, by default, don't.
Unfortunately I didn't (and don't) have a USB hard drive and was using some USB sticks,
combined using LVM and they gave up after a couple of months before I managed to
make the VMs use the cache. The cache gets a lot of use. Maybe I was running ATLAS then.
Maybe it's time for another try and some better USB thingys.
42) Message boards : News : Task creation delayed - database maintenance (Message 34308)
Posted 8 Feb 2018 by m
Post:
.... we are back in normal operation since yesterday evening....

Thanks, Nils... but..
I've still got 25 tasks waiting for validation but the database "can't find workunit" Have these been lost?

From a prevoius post "Sorry, if any running tasks have been removed, this is by accident and we apologize for that."
43) Message boards : News : Thanks for supporting SixTrack at LHC@Home and updates (Message 34060)
Posted 24 Jan 2018 by m
Post:
Alessio and the team.

Thanks for the update and for letting us know how our help fits into the "grand scheme of things". It really does help to know that our work is both useful and appreciated.

jp
44) Message boards : Cafe LHC : Milestones (Message 33718)
Posted 8 Jan 2018 by m
Post:
Can't find a link to the Billionaire's Club here but, if it's still tucked away somewhere, I've got another entry in it with 1G Theory events here yesterday, according to McPlots.
Another 1 from -dev and 6 from vLHC making 8 Giga-events in total.

Just come across this post, if you're still interested the remains are here but they don't seem to work properly now.
45) Message boards : Number crunching : Many computing errors (Message 32014)
Posted 20 Aug 2017 by m
Post:
Didn't spot them when I downloaded it years ago. I assumed they'd just all come in one file. I see no reason why they shouldn't.


They're released under different licences. VBox proper is the GPLv2 which is open source and redistributable, whilst the extension pack is this one;... which isn't.
46) Message boards : News : CMS@Home -- please set No New Tasks and perhaps temporarily run another project (Message 31481)
Posted 18 Jul 2017 by m
Post:
This looks encouraging.
47) Message boards : LHC@home Science : The LHC on the BBC. (Message 31303)
Posted 6 Jul 2017 by m
Post:
Science entertainment, hopefully visible from outside the UK You don't need to sign in to download.
48) Message boards : Number crunching : not sending out SixTrack (Message 30421)
Posted 19 May 2017 by m
Post:


Please reset your client and press update again if your BOINC client has not managed to pull Sixtrack tasks from the project.


Fri 19 May 2017 14:52:18 BST | LHC@home | Resetting project
Fri 19 May 2017 14:52:20 BST | LHC@home | Master file download succeeded
Fri 19 May 2017 14:52:25 BST | LHC@home | Sending scheduler request: To fetch work.
Fri 19 May 2017 14:52:25 BST | LHC@home | Requesting new tasks for CPU
Fri 19 May 2017 14:52:26 BST | LHC@home | Scheduler request completed: got 0 new tasks
Fri 19 May 2017 14:52:26 BST | LHC@home | No tasks sent
Fri 19 May 2017 14:52:26 BST | LHC@home | No tasks are available for SixTrack
49) Message boards : Sixtrack Application : Tasks available / tasks not available (Message 30411)
Posted 18 May 2017 by m
Post:
Project Date ID Message
LHC@home 18/05/2017 8:42:52 pm 389 No tasks are available for SixTrack
50) Message boards : Sixtrack Application : Out of disk space (Message 29805)
Posted 4 Apr 2017 by m
Post:
Been getting this for a while.

LHC@home 04/04/2017 1:07:56 am 441
[error] Error reported by file upload server: Server is out of disk space
51) Message boards : ATLAS application : Very long tasks in the queue (Message 29356)
Posted 17 Mar 2017 by m
Post:
While testing the native linux app a few days ago I made the following experience.
Running it on 1 core the resulting HITS* was 20 kB.
Running it on 2 cores the resulting HITS* was 50 MB.

David mentioned that the 50 MB file was the correct one.

As far as I understood from one of David´s postings in the DEV board
- always the same input data was used during the test
- the input data was taken from the life system

How reliable are the results from a science perspective if the output differs depending on the number of used cores?
Can this happen inside the VM app also?

This is from this single core VM job:-

2017-03-16 05:18:26 (4821): Guest Log: -rw------- 1 root root 52108715 Mar 16 05:15 HITS.10165253._194503.pool.root.1
52) Message boards : ATLAS application : Very long tasks in the queue (Message 29313)
Posted 15 Mar 2017 by m
Post:
....I was thinking of making something like an "ATLAS pro" app for serious ATLAS crunchers with long tasks and also the native Linux version, and keep the normal tasks for newcomers or those who crunch many projects....

Does this mean that you have/will get the native app to run on Ubuntu or will we need another distribution, if so which one will be best?
53) Message boards : ATLAS application : Draining current ATLAS tasks to prepare for new version (Message 29186)
Posted 11 Mar 2017 by m
Post:
Also, has suspend/resume been tested on this? For me jobs need to survive the
host being shut down for >12h. Ideally without losing work in progress but definitely without generating spurious errors.


Shure not, but Atlas doesn't have any problems with pausing / suspending / for a longer intervall.

Perhaps you mixed this up with CMS ?

Well, CMS is certainly worse than Theory in this respect, perhaps because the tasks last longer, but both leave much to be desired; so I've largely given up on CMS now. Hopefully Atlas will be better... shame about the native version.
54) Message boards : ATLAS application : Draining current ATLAS tasks to prepare for new version (Message 29164)
Posted 10 Mar 2017 by m
Post:
Will the console of the new ATLAS-version be more informative.
Now we only see: localhost login

It would be nice to have the "top" command in the Console and the progress of the events processed.

Yes, please.

Also, has suspend/resume been tested on this? For me jobs need to survive the
host being shut down for >12h. Ideally without losing work in progress but definitely without generating spurious errors.
55) Message boards : Theory Application : vLHC app MC PLOTS results on LHC classic server? (Message 28972)
Posted 25 Feb 2017 by m
Post:
Thanks to all involved.

If you want to make bookmarks (or whatever they're called on your browser)
to your plots for each project, use this:-

http://mcplots-dev.cern.ch/production.php?view=user&system=<system>&userid=<user>

where <system> is:-

1 for vLHC (the old one)
2 for vLHC dev
3 for LHCat home, (the new one)

and <user> is your user id for that project.

Thanks again.
56) Message boards : Sixtrack Application : Shiny new executables! Could you try them? (Message 28943)
Posted 20 Feb 2017 by m
Post:
Tested OK on native 32bit Linux (Mint 17.3, kernel 3.19.0-32-generic). Output files identical, ran 13 mins on one full core.

Tested OK on 64bit Linux Ubuntu 12.04. Output files identical, ran for 5 mins on one full core.
57) Message boards : Sixtrack Application : Shiny new executables! Could you try them? (Message 28936)
Posted 20 Feb 2017 by m
Post:
You're there. Tested OK on native 32bitXP. Output files identical (changed endings in Notepad++, then used fc) Took a bit over 20mins but there were two Rosetta BOINC tasks (forgot again.. it's the brain cells) running alongside.
Thanks for all the effort.
58) Message boards : Sixtrack Application : Shiny new executables! Could you try them? (Message 28923)
Posted 19 Feb 2017 by m
Post:
Just an idle thought...
Running Dependency Walker (depends) on the v2 exe shows the missing bcrypt (now, presumably, fixed) also potentially problems with mpr.dll. This is an XP library and is present on the system I used.
It seems to be a delay-load dependency of setupapi.dll - which was OK and of shlwapi.dll, which wasn't.
This is from the FAQ for depends:-

Q Why am I seeing a lot of applications where MPR.DLL shows up in red under SHLWAPI.DLL because it is missing a function named WNetRestoreConnectionA? I also get a "Warning: At least one module has an unresolved import due to a missing export function in a delay-load dependent module" message.

A Some versions of SHLWAPI.DLL (like the one on Windows XP) have a delay-load dependency on the function WNetRestoreConnectionA in MPR.DLL. Missing delay-load functions are not a problem as long as the calling DLL is prepared to handle the situation. Dependency Walker flags all potential problems as it cannot detect if an application intends to handle the issue. In the case of SHLWAPI.DLL, this is not an problem as it does not require WNetRestoreConnectionA to exist and handles the missing function at runtime. This warning can be ignored. See the "How to Interpret Warnings and Errors in Dependency Walker" section in help for more details.


So perhaps you could just try it and see what happens.
59) Message boards : Sixtrack Application : Shiny new executables! Could you try them? (Message 28910)
Posted 18 Feb 2017 by m
Post:
Just for fun, tested OK (output files identical, got the endings right this time) on native 32bit Linux (Mint 17.3) . It ran for about 20 minutes but I forgot to shut down BOINC which went off and downloaded a couple of "proper" tasks which were running as well.
60) Message boards : Sixtrack Application : Shiny new executables! Could you try them? (Message 28895)
Posted 16 Feb 2017 by m
Post:
First off, I'm no writer of software but could an older version provide some clues? This implies that v2.4.12 of libarchive runs (ran) on XP. Looks like it should work on any old Windows.

Edit. In any case, is it not possible to retain the dull old exe for XP hosts? It's certainly stood the test of time and you didn't say that the new ones provided any new functions...


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