Multiple tasks in multicore vm

Questions and Answers : Unix/Linux : Multiple tasks in multicore vm

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Message 93491 - Posted: 5 Apr 2020, 12:40:17 UTC
Last modified: 5 Apr 2020, 12:54:36 UTC

Hi, I have installed boinccmd in a Centos 7 VM (kvm). The vm has 8 vcpu and 4 GB of memory. I have noted that boinc only run one task in one vcpu:

1) -----------
name: 1fm5fz4k_jhr_design1_COVID-19_SAVE_ALL_OUT_903459_1_1
WU name: 1fm5fz4k_jhr_design1_COVID-19_SAVE_ALL_OUT_903459_1
project URL: https://boinc.bakerlab.org/rosetta/
received: Sun Apr 5 00:56:22 2020
report deadline: Mon Apr 13 00:56:21 2020
ready to report: no
state: downloaded
scheduler state: scheduled
active_task_state: EXECUTING
app version num: 412
resources: 1 CPU
estimated CPU time remaining: 21517.972794



With the other 7 vcpu idle. How to force to boinc to download more task to run in the other vpcu?
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Message 93500 - Posted: 5 Apr 2020, 15:09:33 UTC

I believe the COVID tasks are tagged as requiring 2GB of memory per active thread. So you may want to run along with BOINC projects that need less memory to run. Then the two could run alongside one another.
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Message 93624 - Posted: 6 Apr 2020, 10:11:10 UTC - in response to Message 93500.  

I have increased memory of vm to 8GB, so if COVID tasks are tagged as requiring 2GB of memory per active thread, in theory It can run two or three more tasks, but not, it continue to run only one task.
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Message 93631 - Posted: 6 Apr 2020, 13:14:05 UTC - in response to Message 93624.  

How much memory is BOINC allowed to use? See your preferences.
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Message 93638 - Posted: 6 Apr 2020, 14:18:51 UTC - in response to Message 93631.  

In principle 90%:

<ram_max_used_idle_pct>90.000000</ram_max_used_idle_pct>
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Message 93648 - Posted: 6 Apr 2020, 16:17:43 UTC

How are the CPU preferences set for this host? Are there any messages in the event log? Which of your hosts are we talking about?
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Message 93666 - Posted: 6 Apr 2020, 19:12:58 UTC - in response to Message 93648.  
Last modified: 6 Apr 2020, 19:13:23 UTC

Hi, I have found the problem, it's the lack of space on disk (I have noted that I have very little disk only for the system). Now I have increase the disk space and I have more tasks running.
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Questions and Answers : Unix/Linux : Multiple tasks in multicore vm



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