Message boards : Number crunching : How do I get the most out of my system running Atlas@home?
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cuphi

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Message 45125 - Posted: 14 Jul 2021, 18:49:22 UTC

This is the computer in question: https://lhcathome.cern.ch/lhcathome/show_host_detail.php?hostid=10692495

I am running an AMD Ryzen 5 3600 with OpenSUSE Linux as the host OS and Rocky Linux as the guest. This is the only BOINC project I am running on this system. The host system is my squid proxy for CVMFS.

For some reason I cannot run six Atlas Native tasks at once if I want to run them single threaded. It only gets four tasks at a time and it will not even download and cache extra work.

I have plenty of free memory in the Rocky VM:

$ free -hw
                    total        used        free      shared     buffers       cache   available
Mem:           30Gi       8.7Gi        16Gi        11Mi       119Mi       5.4Gi        21Gi
Swap:         4.0Gi          0B       4.0Gi


Of the 25GB of disk space BOINC only 5.35GB is being used.
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computezrmle
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Message 45126 - Posted: 14 Jul 2021, 20:07:00 UTC - in response to Message 45125.  

IIRC there's a server side limit that doesn't allow to send more work.
You may try a 2-core setup.
This may increase the limit.
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cuphi

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Message 45127 - Posted: 14 Jul 2021, 20:38:49 UTC - in response to Message 45126.  

That seems to have worked. I set it to use 2 CPU's per task and it downloaded and started two more. Maybe later it will start to cache work. Thanks for the tip.
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Message boards : Number crunching : How do I get the most out of my system running Atlas@home?


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