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SWIFT
SWIFTsim
Commits
2e7b35b1
Commit
2e7b35b1
authored
Mar 03, 2017
by
Matthieu Schaller
Browse files
Don't initialise multipoles if they don't exist.
parent
b3d0dc61
Changes
4
Hide whitespace changes
Inline
Side-by-side
src/multipole.h
View file @
2e7b35b1
...
...
@@ -289,31 +289,30 @@ INLINE static void multipole_M2M(struct multipole *m_a,
* @param pos_b The position of the multipole.
* @param periodic Is the calculation periodic ?
*/
/* INLINE static void multipole_M2L(struct field_tensors *l_a, */
/* const struct multipole m_b, */
/* const double pos_a[3], const double
* pos_b[3], */
/* int periodic) { */
/* /\* double dx, dy, dz; *\/ */
/* /\* if (periodic) { *\/ */
/* /\* dx = box_wrap(pos_a[0] - pos_b[0], 0., 1.); *\/ */
/* /\* dy = box_wrap(pos_a[1] - pos_b[1], 0., 1.); *\/ */
/* /\* dz = box_wrap(pos_a[2] - pos_b[2], 0., 1.); *\/ */
/* /\* } else { *\/ */
/* /\* dx = pos_a[0] - pos_b[0]; *\/ */
/* /\* dy = pos_a[1] - pos_b[1]; *\/ */
/* /\* dz = pos_a[2] - pos_b[2]; *\/ */
/* /\* } *\/ */
/* /\* const double r2 = dx * dx + dy * dy + dz * dz; *\/ */
/* /\* const double r_inv = 1. / sqrt(r2); *\/ */
/* /\* /\\* 1st order multipole term *\\/ *\/ */
/* /\* l_a->x.F_000 = D_100(dx, dy, dz, r_inv); *\/ */
/* /\* l_a->y.F_000 = D_010(dx, dy, dz, r_inv); *\/ */
/* /\* l_a->z.F_000 = D_001(dx, dy, dz, r_inv); *\/ */
/* } */
INLINE
static
void
multipole_M2L
(
struct
gravity_tensors
*
l_a
,
const
struct
multipole
*
m_b
,
const
double
pos_a
[
3
],
const
double
pos_b
[
3
],
int
periodic
)
{
double
dx
,
dy
,
dz
;
if
(
periodic
)
{
dx
=
box_wrap
(
pos_a
[
0
]
-
pos_b
[
0
],
0
.,
1
.);
dy
=
box_wrap
(
pos_a
[
1
]
-
pos_b
[
1
],
0
.,
1
.);
dz
=
box_wrap
(
pos_a
[
2
]
-
pos_b
[
2
],
0
.,
1
.);
}
else
{
dx
=
pos_a
[
0
]
-
pos_b
[
0
];
dy
=
pos_a
[
1
]
-
pos_b
[
1
];
dz
=
pos_a
[
2
]
-
pos_b
[
2
];
}
const
double
r2
=
dx
*
dx
+
dy
*
dy
+
dz
*
dz
;
const
double
r_inv
=
1
.
/
sqrt
(
r2
);
/* 1st order multipole term */
l_a
->
a_x
.
F_000
=
D_100
(
dx
,
dy
,
dz
,
r_inv
)
*
m_b
->
mass
;
l_a
->
a_y
.
F_000
=
D_010
(
dx
,
dy
,
dz
,
r_inv
)
*
m_b
->
mass
;
l_a
->
a_z
.
F_000
=
D_001
(
dx
,
dy
,
dz
,
r_inv
)
*
m_b
->
mass
;
}
#if 0
...
...
src/runner.c
View file @
2e7b35b1
...
...
@@ -496,7 +496,8 @@ void runner_do_init(struct runner *r, struct cell *c, int timer) {
if
(
!
cell_is_active
(
c
,
e
))
return
;
/* Reset the gravity acceleration tensors */
if
(
c
->
multipole
)
multipole_init
(
c
->
multipole
);
if
(
e
->
policy
&
engine_policy_self_gravity
)
multipole_init
(
c
->
multipole
);
/* Recurse? */
if
(
c
->
split
)
{
...
...
src/runner_doiact_grav.h
View file @
2e7b35b1
...
...
@@ -53,6 +53,42 @@ void runner_do_grav_up(struct runner *r, struct cell *c) {
/* } */
}
/**
* @brief Computes the interaction of the field tensor in a cell with the
* multipole of another cell.
*
* @param r The #runner.
* @param ci The #cell with field tensor to interact.
* @param cj The #cell with the multipole.
*/
__attribute__
((
always_inline
))
INLINE
static
void
runner_dopair_grav_mm
(
const
struct
runner
*
r
,
const
struct
cell
*
restrict
ci
,
const
struct
cell
*
restrict
cj
)
{
const
struct
engine
*
e
=
r
->
e
;
const
int
periodic
=
e
->
s
->
periodic
;
const
struct
multipole
*
multi_j
=
&
cj
->
multipole
->
m_pole
;
//const float a_smooth = e->gravity_properties->a_smooth;
//const float rlr_inv = 1. / (a_smooth * ci->super->width[0]);
TIMER_TIC
;
#ifdef SWIFT_DEBUG_CHECKS
if
(
multi_j
->
mass
==
0
.
0
)
error
(
"Multipole does not seem to have been set."
);
#endif
/* Anything to do here? */
if
(
!
cell_is_active
(
ci
,
e
))
return
;
multipole_M2L
(
ci
->
multipole
,
multi_j
,
ci
->
multipole
->
CoM
,
cj
->
multipole
->
CoM
,
periodic
);
TIMER_TOC
(
timer_dopair_grav_mm
);
}
/**
* @brief Computes the interaction of all the particles in a cell with the
* multipole of another cell.
...
...
@@ -541,7 +577,7 @@ static void runner_do_grav_long_range(struct runner *r, struct cell *ci,
// if (r2 > max_d2) continue;
if
(
!
cell_are_neighbours
(
ci
,
cj
))
runner_dopair_grav_
p
m
(
r
,
ci
,
cj
);
if
(
!
cell_are_neighbours
(
ci
,
cj
))
runner_dopair_grav_
m
m
(
r
,
ci
,
cj
);
}
}
...
...
src/timers.h
View file @
2e7b35b1
...
...
@@ -46,6 +46,7 @@ enum {
timer_dopair_gradient
,
timer_dopair_force
,
timer_dopair_grav_pm
,
timer_dopair_grav_mm
,
timer_dopair_grav_pp
,
timer_dograv_external
,
timer_dosource
,
...
...
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