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computezrmle
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Message 29666 - Posted: 27 Mar 2017, 8:29:52 UTC

I just noticed a difference in the app_version description sent by the server for ATLAS and CMS.
ATLAS has the <is_wrapper/> flag set while it is missing for CMS.

<app_version>
<app_name>ATLAS</app_name>
<file_ref>
<file_name>vboxwrapper_26196_x86_64-pc-linux-gnu</file_name>
<main_program/>
</file_ref>
<is_wrapper/>
</app_version>

<app_version>
<app_name>CMS</app_name>
<file_ref>
<file_name>vboxwrapper_26196_x86_64-pc-linux-gnu</file_name>
<main_program/>
</file_ref>
</app_version>

According to the BOINC documentation this flag has an influence on the basic scheduling priority.
On my hosts the nice levels are 10 for ATLAS and 19 for CMS.
A missing <is_wrapper/> flag may be important on nearly overloaded machines as the vboxwrapper may lose control over the VM.
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Message boards : CMS Application : Missing is_wrapper Flag


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