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Running 4 CPUs for one WU?
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Message boards : Number crunching : Running 4 CPUs for one WU?

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Iceberg
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Message 67835 - Posted: 6 Oct 2018, 6:36:06 UTC

Hi all. I just started participating in the project but am very disappointed that one MilkyWay WU is using 4 CPUs, preventing me from processing on my other projects. Is there a way I can get it so that the one WU uses only 1 CPU space so I can participate in the other projects simultaneously? If not, I will have to remove this project, unfortunately.

Thanks.

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Message 67836 - Posted: 6 Oct 2018, 13:52:18 UTC - in response to Message 67835.

Hi all. I just started participating in the project but am very disappointed that one MilkyWay WU is using 4 CPUs, preventing me from processing on my other projects. Is there a way I can get it so that the one WU uses only 1 CPU space so I can participate in the other projects simultaneously? If not, I will have to remove this project, unfortunately.

Thanks.


That's because you have selected to run the n-body workunits, they use multiple cpu cores per workunit.

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Message 67837 - Posted: 6 Oct 2018, 13:56:20 UTC - in response to Message 67836.

Hi all. I just started participating in the project but am very disappointed that one MilkyWay WU is using 4 CPUs, preventing me from processing on my other projects. Is there a way I can get it so that the one WU uses only 1 CPU space so I can participate in the other projects simultaneously? If not, I will have to remove this project, unfortunately.

Thanks.


That's because you have selected to run the n-body workunits, they use multiple cpu cores per workunit.


IF you uncheck the n-body workunits in your preferences, here on the website, then what will happen is you will get single cpu workunits but you may run 4 of them at one time as Boinc does not have a built-in setting to allow us to run for example 2 workunits from projects a, 1 workunit from project b and 1 workunit from projects c. Or any combination of cpu cores and projects, it chooses which project to run based on a formula and you will often run 4 workunits from project a and then switch to 4 workuntis from project b.

Iceberg
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Message 67838 - Posted: 6 Oct 2018, 17:23:05 UTC - in response to Message 67837.

OK. Thanks, Mikey, for this information. It was a clear explanation.


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