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rand_pool_wrap_kokkos.cpp
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Sun, Jul 7, 20:33
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Tue, Jul 9, 20:33 (2 d)
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rLAMMPS lammps
rand_pool_wrap_kokkos.cpp
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/* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
#include "comm.h"
#include "rand_pool_wrap_kokkos.h"
#include "lammps.h"
#include "kokkos.h"
#include "random_mars.h"
#include "update.h"
using
namespace
LAMMPS_NS
;
/* ---------------------------------------------------------------------- */
RandPoolWrap
::
RandPoolWrap
(
int
,
LAMMPS
*
lmp
)
:
Pointers
(
lmp
)
{
random_thr
=
NULL
;
nthreads
=
lmp
->
kokkos
->
num_threads
;
}
/* ---------------------------------------------------------------------- */
RandPoolWrap
::~
RandPoolWrap
()
{
}
void
RandPoolWrap
::
destroy
()
{
if
(
random_thr
)
{
for
(
int
i
=
1
;
i
<
nthreads
;
++
i
)
delete
random_thr
[
i
];
delete
[]
random_thr
;
random_thr
=
NULL
;
}
}
void
RandPoolWrap
::
init
(
RanMars
*
random
,
int
seed
)
{
// deallocate pool of RNGs
if
(
random_thr
)
{
for
(
int
i
=
1
;
i
<
this
->
nthreads
;
++
i
)
delete
random_thr
[
i
];
delete
[]
random_thr
;
}
// allocate pool of RNGs
// generate a random number generator instance for
// all threads != 0. make sure we use unique seeds.
nthreads
=
lmp
->
kokkos
->
num_threads
;
random_thr
=
new
RanMars
*
[
nthreads
];
for
(
int
tid
=
1
;
tid
<
nthreads
;
++
tid
)
{
random_thr
[
tid
]
=
new
RanMars
(
lmp
,
seed
+
comm
->
me
+
comm
->
nprocs
*
tid
);
}
// to ensure full compatibility with the serial style
// we use the serial random number generator instance for thread 0
random_thr
[
0
]
=
random
;
}
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