Message boards : ATLAS application : CPU cores in use at one time
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greg_be

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Message 40714 - Posted: 28 Nov 2019, 23:28:52 UTC

I am trying to figure out how to set up either in appinfo or cc_config or via the project settings, to restrict ATLAS to running just 1 instance at a time.
In project settings I have it set for 8 CPU (16 cores I guess), if I restrict it to 4, then it uses 8 cores?

But....how do I go about writing a script that tells ATLAS to only use 8 cores and no more? And let all the other projects here do what they want?
ATLAS as a double instance, eats 95% of my memory and uses all 16 cores. Nothing else from BOINC can run while these are grinding away.

What are your recommendations? For the moment I can not afford to buy more memory. I was looking at 16 gigs, but that's around 75 Euro. A bit to pricey for me at the moment.
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Toby Broom
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Message 40716 - Posted: 29 Nov 2019, 6:37:41 UTC - in response to Message 40714.  

On the websettings should be :

Max 8 CPU, Max 1 Job

in app_config:
<app>
<name>ATLAS</name>
<max_concurrent>1</max_concurrent>
</app>
<app_version>
<app_name>ATLAS</app_name>
<plan_class>vbox64_mt_mcore</plan_class>
<avg_ncpus>8</avg_ncpus>
</app_version>

I'm not sure how well this play with the other projects, I run my ATLAS in a separate BOINC instance so I can get it to work correctly.
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greg_be

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Message 40720 - Posted: 29 Nov 2019, 10:51:32 UTC - in response to Message 40716.  
Last modified: 29 Nov 2019, 10:52:17 UTC

I have never tried running a second instance of BOINC.
I have always kept everything under one instance.
But let me try your app_config code first. Thanks for writing that.
The idea of a second instance for ATLAS sounds interesting though.
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Message boards : ATLAS application : CPU cores in use at one time


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