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Re: [lammps-users] [Kokkos] inconsistency in rmass across pair/fix/compute
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Re: [lammps-users] [Kokkos] inconsistency in rmass across pair/fix/compute

From: Steve Plimpton <sjplimp@...24...>
Date: Mon, 14 May 2018 07:39:14 -0600

This is a Q for Stan (CCd)


On Fri, May 11, 2018 at 4:51 AM, Denis Taniguchi <Denis.Taniguchi@...7548...> wrote:

Hi all,

I noticed that sometimes rmass is just treated as a double* and sometimes as a AT::t_float_1d_randomread.

When treated as double* it takes the content of atomKK->rmass which is a pointer to host data. In FixNVEKokkos it stores rmass as double* but uses it inside a functor (FixNVEKokkosInitialIntegrateFunctor calling initial_integrate_rmass_item) which is dispatched by parallel_for.

Will the device kernel automagically copy the content to device memory?




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