Message boards : Sixtrack Application : multi threading six track possible in any way?
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marmot
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Message 37866 - Posted: 31 Jan 2019, 2:06:17 UTC

Can we assign an app_config, for 8 cores, such as:

<app>
<name>sixtrack</name>
<max_concurrent>2</max_concurrent>
<fraction_done_exact/>
</app>
<app_version>
<app_name>sixtrack</app_name>
<avg_ncpus>4</avg_ncpus>
<cmdline>-t4</cmdline>
</app_version>


If not, how much trouble is the implementation of multi-threading the WU?
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Message 37873 - Posted: 31 Jan 2019, 9:49:08 UTC - in response to Message 37866.  

Hello,
Why not to use LHC@HOME preferences ?
You can select amount of CPU !
If you want to run 4CPU on one host and 8CPU on a other host,
add a separate computer location with preferences you want (CPU/GPU/application/ressources).
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marmot
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Message 37884 - Posted: 1 Feb 2019, 2:06:08 UTC - in response to Message 37873.  

Hello,
Why not to use LHC@HOME preferences ?
You can select amount of CPU !
If you want to run 4CPU on one host and 8CPU on a other host,
add a separate computer location with preferences you want (CPU/GPU/application/ressources).


That's running 8 single core WU at once; not running one 8 thread WU and not what I'm looking for.
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Profile Veronica
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Message 37889 - Posted: 1 Feb 2019, 9:51:08 UTC - in response to Message 37884.  

Hi,

SixTrack is not a multi threaded application, and due to the nature of the simulations we run on SixTrack, there is no real need for parallelising it.
SixTrack 5 Core Developer. github.com/SixTrack/SixTrack
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Message 37895 - Posted: 1 Feb 2019, 10:22:58 UTC - in response to Message 37889.  

A bit OT, but ...

Thanks Veronica.
It's very nice to see that someone from the core team (or close to it?) answers volunteer's questions.

+1
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Message 37900 - Posted: 1 Feb 2019, 13:42:44 UTC - in response to Message 37895.  

A bit OT, but ...

Thanks Veronica.
It's very nice to see that someone from the core team (or close to it?) answers volunteer's questions.

+1


Thanks!

There are currently six of us maintaining and developing the code on a regular basis. We're hoping SixTrack 5 can soon go into production on BOINC.
SixTrack 5 Core Developer. github.com/SixTrack/SixTrack
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Message 37908 - Posted: 2 Feb 2019, 2:16:02 UTC - in response to Message 37889.  

Hi,

SixTrack is not a multi threaded application, and due to the nature of the simulations we run on SixTrack, there is no real need for parallelising it.


Thanks for the response and your work on the project.
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Message boards : Sixtrack Application : multi threading six track possible in any way?


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