Message boards : Theory Application : download of only 2 Theory tasks per computer
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Erich56

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Message 44209 - Posted: 27 Jan 2021, 18:00:11 UTC

What I have noticed with one my machines for quite a while, has now become true for all other machines with which I crunch Theory: I can download and crunch concurrently only 2 tasks, regardless of which settings I have in the BOINC manager (e.g. maximum work for 10 days).

With ATLAS and CMS, this problem does not occur (with Sixtrack not either).

Has anyone made the same experience and found out how to solve the problem?
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Toby Broom
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Message 44211 - Posted: 27 Jan 2021, 19:46:05 UTC - in response to Message 44209.  

Only Sixtrack respects the boinc manager settings by default.

The project did this to because default settings would freeze peoples computer up when you tried to launch say 8 theory tasks with 8Gb of RAM, or even worse for ATLAS.

If you want BOINC to control then you have to set Max # jobs & Max # CPUs to No limit, the downside is ATLAS task will use all cores and something like 10Gb of Ram per WU, you can override this locally.
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Erich56

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Message 44224 - Posted: 29 Jan 2021, 14:01:05 UTC - in response to Message 44211.  

If you want BOINC to control then you have to set Max # jobs & Max # CPUs to No limit,
thank you for the hint, Toby. It works well.
In fact: if I want a given machine to download and crunch 3 tasks, I put max # CPUs and Max # Tasks to 3. For 5, I do same with 5. It's perfect.
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Message boards : Theory Application : download of only 2 Theory tasks per computer


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