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Re: [lammps-users] force_communication
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Re: [lammps-users] force_communication


From: Cunzhi Zhang <zcz1005@...2045...>
Date: Fri, 4 May 2018 00:15:00 -0500

Thanks


> On May 3, 2018, at 1:00 PM, Axel Kohlmeyer <akohlmey@...24...> wrote:
> 
> On Thu, May 3, 2018 at 1:03 PM, Cunzhi Zhang <zcz1005@...2045...> wrote:
>> Dear lammps community
>> 
>>        I am reading some pair force codes. the force is calculated locally for myatom (i < local), but also we have force for ghost atoms (in pair). However I did not find any pack/unpack_reverse_comm function in pair*.cpp to reduce the force of ghost atoms. So could anyone point out how lammps deal with force communication between different processors?
> 
> 
> integrator and minimizer styles call comm->reverse_comm() (and only if
> newton_pair is true). note, that this is not
> comm->reverse_comm_pair(), so it knows which data to collect and
> communicate.
> 
> axel.
> 
>> 
>> Thanks
>> Cunzhi
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> 
> 
> 
> -- 
> Dr. Axel Kohlmeyer  akohlmey@...24...  http://goo.gl/1wk0
> College of Science & Technology, Temple University, Philadelphia PA, USA
> International Centre for Theoretical Physics, Trieste. Italy.