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Profile Yeti
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Message 38293 - Posted: 19 Mar 2019, 13:19:57 UTC - in response to Message 38290.  
Last modified: 19 Mar 2019, 13:21:26 UTC

...running a Xeon E5 2620v4 I would tend to think I get two green checks, but I don't.
I just checked it with my XEON E5 2620v3 and I get two green checks

Does it make sense to try all that on a box with 8Gig of RAM?

You hit the nail on the head !

I have run Atlas on similar boxes with 8 GB, but finally it didn't make me happy.

One Atlas with 4-Cores should work, but you should limit Atlas to run really only 1 WU at a time via app_config.xml

I have switched this box to run 3 or 4 Theory-Tasks and this works fine. Theory likes machine that restart only seldom.


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Message 38295 - Posted: 19 Mar 2019, 13:43:19 UTC - in response to Message 38290.  

Does it make sense to try all that on a box with 8Gig of RAM?

It feels as if it is generally quite fruitless to try with that amout of RAM, specifically if you try running other projects/stuff on the box as well.

I used to do it on 8GB. At first I got a lot of invalids. Then I boosted the "switch between tasks every..." setting to 24 hours and got a considerably higher success rate (but not 100%). I also learned to schedule OS updates and reboots around the ATLAS tasks so as not to suspend them. In theory ATLAS VBox tasks should not be bothered by suspending/resuming but in practice I found they are. YMMV.
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Message 38298 - Posted: 19 Mar 2019, 13:57:39 UTC - in response to Message 38295.  

Then I boosted the "switch between tasks every..." setting to 24 hours and got a considerably higher success rate
This is a very important point !


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Message 38582 - Posted: 19 Apr 2019, 1:26:58 UTC

Greetings Yeti

Thankyou for your updated checklist and all you and your teams efforts.

I have now managed to complete 2 x ATLAS jobs (using mt 4 cores per job).

I believe my earlier (okay way earlier) troubles, were caused by insufficient RAM in the computer, had 8 GB, now has 16 GB.

Yes both have the HITS file entry in the output.

Cheers
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Message 40155 - Posted: 15 Oct 2019, 13:04:02 UTC

For some reason, Atlas is using 10200 MB per instance of Atlas, despite an app_config setting it at 6600 MB for a 4 core job. Any ideas why this might be happening?

<app_config>
<app>
<name>ATLAS</name>
<max_concurrent>8</max_concurrent>
</app>
<app_version>
<app_name>ATLAS</app_name>
<plan_class>vbox64_mt_mcore_atlas</plan_class>
<avg_ncpus>4.0</avg_ncpus>
<cmdline>--memory_size_mb 6600</cmdline>
</app_version>
</app_config>
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Message 40156 - Posted: 15 Oct 2019, 13:52:27 UTC - in response to Message 40155.  
Last modified: 15 Oct 2019, 13:52:48 UTC

For some reason, Atlas is using 10200 MB per instance of Atlas, despite an app_config setting it at 6600 MB for a 4 core job. Any ideas why this might be happening?


The needed memory is calculated by the LHC@Home-Server that doesn't know your app_config settings. It uses the Web-Preferences, so you should change your Web-Preferences regarding Max # jobs and Max # CPUs

As far as I know there is a bug in the server-software so these parameters are crossed interpreted, so you will have to play a little bit around


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Message 40157 - Posted: 15 Oct 2019, 13:56:12 UTC - in response to Message 40155.  

The configuration looks fine.

Did you check if
- the name of your file is "app_config.xml"?
- the file is saved to {BOINC Data directory}\projects\lhcathome.cern.ch_lhcathome?

Did you run "reload config files" from your BOINC menu (or restarted the BOINC client) after the file was saved?

Settings that have been changed apply only to tasks that are started after the change.
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Message 40158 - Posted: 15 Oct 2019, 15:43:22 UTC - in response to Message 40157.  
Last modified: 15 Oct 2019, 15:46:56 UTC

Yes, I'm aware of those steps so I'm sure I've done it properly. It's running the jobs on 4C or 2C as specified on the host.

Strangely it was using 4C on the correct hosts. Other hosts I was using 2C. So I guess there is no way to differentiate now for the different hosts of you have to set global preferences.
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Profile Byron Leigh Hatch @ team Carl ...
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Message 40293 - Posted: 27 Oct 2019, 3:40:17 UTC

Virtualbox (5.2.8) installed, CPU does not have hardware virtualization support
Hello everyone.
I am having difficulties geting Virtualbox (5.2.8) to run.
my computer skills are weak. I'm still learing :)
I can't figure this one out :(
any guidance, suggestions, advice, would be greatly appreciated,
BOINC 7.14.2 not installed as service.
Editon --------- Windows 10 Pro for Workstations
Version -------- 1903
installed on --- 2019-08-27
OS Build ------- 18362.295
COMPUTER IS American Megatrends Inc.
BIOS Version: 3016
H11OM-C
in your BOINC top level directory you will find a file called client_state.xml.
Open this file with a simple editor (eg Notepad on Windows) and look for this line:
<p_vm_extensions_disabled>1</p_vm_extensions_disabled>
You need to change the 1 to a 0 (zero)
This line is usually absent from the file unless you have tried to run VBox tasks without having enabled the Virtualisation (VT-X in Windows) beforehand.
So line should look like this after you've changed it:
<p_vm_extensions_disabled>0</p_vm_extensions_disabled>
Save the file.
The file needs to be in plain text so using a fancy editor that leaves formatting characters will mess it up.
Restart BOINC and get more tasks, they should then work.

Virtualization
Virtualbox (5.2.8) installed, CPU does not have hardware virtualization support



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Message 40295 - Posted: 27 Oct 2019, 6:06:23 UTC - in response to Message 40293.  

From your hardcopys I would say you only need to enter your bios and switch VT-X on


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Guy PF Masevaux

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Message 40368 - Posted: 7 Nov 2019, 7:51:12 UTC - in response to Message 40293.  

This is a great answer
Hyper v is used only for server and not for virtualisation computing and this is the reason why hyper v must be disabled

To activate virtualisation you must go Inside of the setup.

Now i change my system and i get to 6 computers
The latest is an I7 at 5GHz with rtx coprocessor:
Type de CPU
GenuineIntel
Intel(R) Core(TM) i7-9700F CPU @ 3.00GHz [Family 6 Model 158 Stepping 13]
Nombre de processeurs
8
Coprocesseurs
NVIDIA GeForce RTX 2060 (4095MB) driver: 430.39 OpenCL: 1.2
Virtualisation
Virtualbox (5.2.8) installé, le processeur est compatible avec la virtualisation matérielle et est activé

I had to make some change in my computer room and now i restartet to compute for the LHC

Best regards to everybody

Guy PFLIEGER
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Message 41195 - Posted: 7 Jan 2020, 18:44:59 UTC

memory inside of the computer
It is necessary to have a look Inside of the boinc manager Tools and especially Inside of the computing choice to select the biggest size of memory avaible Inside of the computer to run easy the projects
as sample:
with an I7 7700k i need 15GB RAM
with an amd ryzen 7 2700x the maximal Inside builded memory is 32 GB an i use 99% for cern project if i compute with full power
sometimes the amd ryzen need at full power more as 32 GB and some tasks are made in standby and the computer is not processing with the 16 processor at the same time
You can see this with some CMS tasks that could be delayed
It is usual that atlas tasks need n processors
The disk memory space is the second important look to have to your computer depending on the project choice
it is important to have a big c: disk on your computer with free memory or 15 Gb avaible free disk space after installing the projects Inside of the boinc manager
each project take place. If you want to work for more projects then you need more disk space and you have less avaible free disk space
if your hard disk is too light in free space the best choice is to install a hard disk with over 230Gb on C:
if you have 300Gb you should run easy
I am back since a short time because i was ill and needed time to go better.
It took a long time and i can say that i spend 50% of the time for health since the open days without relation ship with the CERN
It is my advanced age that arrive.
Cern was great and i stayed at IBIS Petit Lancy

I restarted with theory and some cms computing
I have 5 cms long run tasks that could arrive to end Inside one or 2 days
the run seems to be today ok. I hope it will go also until end

Guy PFLIEGER
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Message boards : Number crunching : Checklist Version 3 for Atlas@Home (and other VM-based Projects) on your PC


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