diff --git a/src/feedback/EAGLE/feedback.h b/src/feedback/EAGLE/feedback.h
index 5fa32fc2fa8053dbeaa1c1f96b5abb8526942b68..14f6821b065db5d05e408c1438af28d7492a5d94 100644
--- a/src/feedback/EAGLE/feedback.h
+++ b/src/feedback/EAGLE/feedback.h
@@ -44,6 +44,27 @@ __attribute__((always_inline)) INLINE static int feedback_do_feedback(
return (sp->birth_time != -1.);
}
+/**
+ * @brief Should this particle be doing any feedback-related operation?
+ *
+ * @param sp The #spart.
+ * @param time The current simulation time (Non-cosmological runs).
+ * @param cosmo The cosmological model (cosmological runs).
+ * @param with_cosmology Are we doing a cosmological run?
+ */
+__attribute__((always_inline)) INLINE static int feedback_is_active(
+ const struct spart* sp, const float time, const struct cosmology* cosmo,
+ const int with_cosmology) {
+
+ if (sp->birth_time == -1.) return 0;
+
+ if (with_cosmology) {
+ return ((float)cosmo->a) > sp->birth_scale_factor;
+ } else {
+ return time > sp->birth_time;
+ }
+}
+
/**
* @brief Prepares a s-particle for its feedback interactions
*
diff --git a/src/feedback/none/feedback.h b/src/feedback/none/feedback.h
index de37015a9974df93d7dee81f7e386213f83b59bb..84a1cf36df9d95c2a672e59f8204f272b29a9b72 100644
--- a/src/feedback/none/feedback.h
+++ b/src/feedback/none/feedback.h
@@ -45,6 +45,21 @@ __attribute__((always_inline)) INLINE static int feedback_do_feedback(
return 0;
}
+/**
+ * @brief Should this particle be doing any feedback-related operation?
+ *
+ * @param sp The #spart.
+ * @param time The current simulation time (Non-cosmological runs).
+ * @param cosmo The cosmological model (cosmological runs).
+ * @param with_cosmology Are we doing a cosmological run?
+ */
+__attribute__((always_inline)) INLINE static int feedback_is_active(
+ const struct spart* sp, const float time, const struct cosmology* cosmo,
+ const int with_cosmology) {
+
+ return 0;
+}
+
/**
* @brief Prepares a star's feedback field before computing what
* needs to be distributed.
diff --git a/src/runner.c b/src/runner.c
index 0a9b6c5780eea85b1a0471734146cdfb28fbe920..e56b7f05132a64606249490b8a5c6816cf291951 100644
--- a/src/runner.c
+++ b/src/runner.c
@@ -185,7 +185,8 @@ void runner_do_stars_ghost(struct runner *r, struct cell *c, int timer) {
if ((right = (float *)malloc(sizeof(float) * c->stars.count)) == NULL)
error("Can't allocate memory for right.");
for (int k = 0; k < c->stars.count; k++)
- if (spart_is_active(&sparts[k], e)) {
+ if (spart_is_active(&sparts[k], e) &&
+ feedback_is_active(&sparts[k], e->time, cosmo, with_cosmology)) {
sid[scount] = k;
h_0[scount] = sparts[k].h;
left[scount] = 0.f;
@@ -1608,14 +1609,12 @@ void runner_do_ghost(struct runner *r, struct cell *c, int timer) {
const float h_init = h_0[i];
const float h_old = p->h;
const float h_old_dim = pow_dimension(h_old);
- // const float h_old_inv_dim = pow_dimension(1.f / h_old);
const float h_old_dim_minus_one = pow_dimension_minus_one(h_old);
float h_new;
int has_no_neighbours = 0;
- if (p->density.wcount == 0.f) {
- // 1e-5 * kernel_root * h_old_inv_dim) { /* No neighbours case */
+ if (p->density.wcount == 0.f) { /* No neighbours case */
/* Flag that there were no neighbours */
has_no_neighbours = 1;
diff --git a/src/runner_doiact_stars.h b/src/runner_doiact_stars.h
index 50cdad07a5b25ab124c1b7cbfca83a81aed85efd..da279fcd01a7f2a3fe900863f7564451f6e88406 100644
--- a/src/runner_doiact_stars.h
+++ b/src/runner_doiact_stars.h
@@ -102,6 +102,7 @@ void DOSELF1_STARS(struct runner *r, struct cell *c, int timer) {
TIMER_TIC;
const struct engine *e = r->e;
+ const int with_cosmology = e->policy & engine_policy_cosmology;
const integertime_t ti_current = e->ti_current;
const struct cosmology *cosmo = e->cosmology;
@@ -124,8 +125,13 @@ void DOSELF1_STARS(struct runner *r, struct cell *c, int timer) {
/* Get a hold of the ith spart in ci. */
struct spart *restrict si = &sparts[sid];
+
+ /* Skip inactive particles */
if (!spart_is_active(si, e)) continue;
+ /* Skip inactive particles */
+ if (!feedback_is_active(si, e->time, cosmo, with_cosmology)) continue;
+
const float hi = si->h;
const float hig2 = hi * hi * kernel_gamma2;
const float six[3] = {(float)(si->x[0] - c->loc[0]),
@@ -191,6 +197,7 @@ void DO_NONSYM_PAIR1_STARS_NAIVE(struct runner *r, struct cell *restrict ci,
#endif
const struct engine *e = r->e;
+ const int with_cosmology = e->policy & engine_policy_cosmology;
const integertime_t ti_current = e->ti_current;
const struct cosmology *cosmo = e->cosmology;
@@ -222,8 +229,13 @@ void DO_NONSYM_PAIR1_STARS_NAIVE(struct runner *r, struct cell *restrict ci,
/* Get a hold of the ith spart in ci. */
struct spart *restrict si = &sparts_i[sid];
+
+ /* Skip inactive particles */
if (!spart_is_active(si, e)) continue;
+ /* Skip inactive particles */
+ if (!feedback_is_active(si, e->time, cosmo, with_cosmology)) continue;
+
const float hi = si->h;
const float hig2 = hi * hi * kernel_gamma2;
const float six[3] = {(float)(si->x[0] - (cj->loc[0] + shift[0])),
@@ -284,6 +296,7 @@ void DO_SYM_PAIR1_STARS(struct runner *r, struct cell *ci, struct cell *cj,
TIMER_TIC;
const struct engine *e = r->e;
+ const int with_cosmology = e->policy & engine_policy_cosmology;
const integertime_t ti_current = e->ti_current;
const struct cosmology *cosmo = e->cosmology;
@@ -350,6 +363,9 @@ void DO_SYM_PAIR1_STARS(struct runner *r, struct cell *ci, struct cell *cj,
/* Skip inactive particles */
if (!spart_is_active(spi, e)) continue;
+ /* Skip inactive particles */
+ if (!feedback_is_active(spi, e->time, cosmo, with_cosmology)) continue;
+
/* Compute distance from the other cell. */
const double px[3] = {spi->x[0], spi->x[1], spi->x[2]};
float dist = px[0] * runner_shift[sid][0] + px[1] * runner_shift[sid][1] +
@@ -475,6 +491,9 @@ void DO_SYM_PAIR1_STARS(struct runner *r, struct cell *ci, struct cell *cj,
/* Skip inactive particles */
if (!spart_is_active(spj, e)) continue;
+ /* Skip inactive particles */
+ if (!feedback_is_active(spj, e->time, cosmo, with_cosmology)) continue;
+
/* Compute distance from the other cell. */
const double px[3] = {spj->x[0], spj->x[1], spj->x[2]};
float dist = px[0] * runner_shift[sid][0] + px[1] * runner_shift[sid][1] +