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Commit 0cab6204 authored by James Willis's avatar James Willis
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Formatting.

parent 7587453b
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src/runner_doiact_vec.c
View file @ 0cab6204
......@@ -265,10 +265,11 @@ __attribute__((always_inline)) INLINE static void populate_max_d_no_cache(
int first_pi = 0, last_pj = cj->count - 1;
int temp;
/* Find the leftmost active particle in cell i that interacts with any particle in cell j. */
/* Find the leftmost active particle in cell i that interacts with any
* particle in cell j. */
first_pi = ci->count;
int active_id = first_pi;
while(first_pi > 0 && sort_i[first_pi - 1].d + dx_max + hi_max > dj_min) {
while (first_pi > 0 && sort_i[first_pi - 1].d + dx_max + hi_max > dj_min) {
first_pi--;
/* Store the index of the particle if it is active. */
if (part_is_active(&parts_i[sort_i[first_pi].i], e)) active_id = first_pi;
......@@ -278,7 +279,7 @@ __attribute__((always_inline)) INLINE static void populate_max_d_no_cache(
first_pi = active_id;
/* Find the maximum index into cell j for each particle in range in cell i. */
if(first_pi < ci->count) {
if (first_pi < ci->count) {
/* Start from the first particle in cell j. */
temp = 0;
......@@ -286,31 +287,35 @@ __attribute__((always_inline)) INLINE static void populate_max_d_no_cache(
const struct part *pi = &parts_i[sort_i[first_pi].i];
/* Loop through particles in cell j until they are not in range of pi. */
while(temp <= cj->count && (sort_i[first_pi].d + (pi->h * kernel_gamma + dx_max - rshift) > sort_j[temp].d))
while (temp <= cj->count &&
(sort_i[first_pi].d + (pi->h * kernel_gamma + dx_max - rshift) >
sort_j[temp].d))
temp++;
max_index_i[first_pi] = temp;
/* Populate max_index_i for remaining particles that are within range. */
for(int i = first_pi + 1; i<ci->count; i++) {
for (int i = first_pi + 1; i < ci->count; i++) {
temp = max_index_i[i - 1];
while(temp <= cj->count && (sort_i[i].d + (pi->h * kernel_gamma + dx_max - rshift) > sort_j[temp].d))
while (temp <= cj->count &&
(sort_i[i].d + (pi->h * kernel_gamma + dx_max - rshift) >
sort_j[temp].d))
temp++;
max_index_i[i] = temp;
}
}
else {
} else {
/* Make sure that max index is set to first particle in cj.*/
max_index_i[ci->count - 1] = 0;
}
/* Find the rightmost active particle in cell j that interacts with any particle in cell i. */
/* Find the rightmost active particle in cell j that interacts with any
* particle in cell i. */
last_pj = -1;
active_id = last_pj;
while(last_pj < cj->count && sort_j[last_pj + 1].d - hj_max - dx_max < di_max) {
while (last_pj < cj->count &&
sort_j[last_pj + 1].d - hj_max - dx_max < di_max) {
last_pj++;
/* Store the index of the particle if it is active. */
if (part_is_active(&parts_j[sort_j[last_pj].i], e)) active_id = last_pj;
......@@ -320,7 +325,7 @@ __attribute__((always_inline)) INLINE static void populate_max_d_no_cache(
last_pj = active_id;
/* Find the maximum index into cell i for each particle in range in cell j. */
if(last_pj > 0 ) {
if (last_pj > 0) {
/* Start from the last particle in cell i. */
temp = ci->count - 1;
......@@ -328,25 +333,27 @@ __attribute__((always_inline)) INLINE static void populate_max_d_no_cache(
const struct part *pj = &parts_j[sort_j[last_pj].i];
/* Loop through particles in cell i until they are not in range of pj. */
while(temp > 0 && sort_j[last_pj].d - dx_max - (pj->h * kernel_gamma) < sort_i[temp].d - rshift)
while (temp > 0 &&
sort_j[last_pj].d - dx_max - (pj->h * kernel_gamma) <
sort_i[temp].d - rshift)
temp--;
max_index_j[last_pj] = temp;
/* Populate max_index_j for remaining particles that are within range. */
for(int i = last_pj - 1; i>=0; i--) {
for (int i = last_pj - 1; i >= 0; i--) {
temp = max_index_j[i + 1];
while(temp > 0 && sort_j[i].d - dx_max - (pj->h * kernel_gamma) < sort_i[temp].d - rshift)
while (temp > 0 &&
sort_j[i].d - dx_max - (pj->h * kernel_gamma) <
sort_i[temp].d - rshift)
temp--;
max_index_j[i] = temp;
}
}
else {
} else {
/* Make sure that max index is set to last particle in ci.*/
max_index_j[0] = ci->count - 1;
max_index_j[0] = ci->count - 1;
}
*init_pi = first_pi;
......@@ -695,8 +702,8 @@ void runner_dopair1_density_vec(struct runner *r, struct cell *ci,
/* Also find the first pi that interacts with any particle in cj and the last
* pj that interacts with any particle in ci. */
populate_max_d_no_cache(ci, cj, sort_i, sort_j, dx_max, rshift, hi_max,
hj_max, di_max, dj_min, max_index_i, max_index_j, &first_pi,
&last_pj, e);
hj_max, di_max, dj_min, max_index_i, max_index_j,
&first_pi, &last_pj, e);
/* Limits of the outer loops. */
int first_pi_loop = first_pi;
......@@ -720,7 +727,8 @@ void runner_dopair1_density_vec(struct runner *r, struct cell *ci,
if (cell_is_active(ci, e)) {
/* Loop over the parts in ci until nothing is within range in cj. */
//for (int pid = count_i - 1; pid >= first_pi_loop && max_index_i[pid] >= 0; pid--) {
// for (int pid = count_i - 1; pid >= first_pi_loop && max_index_i[pid] >=
// 0; pid--) {
for (int pid = count_i - 1; pid >= first_pi_loop; pid--) {
/* Get a hold of the ith part in ci. */
......@@ -849,7 +857,8 @@ void runner_dopair1_density_vec(struct runner *r, struct cell *ci,
if (cell_is_active(cj, e)) {
/* Loop over the parts in cj until nothing is within range in ci. */
//for (int pjd = 0; pjd <= last_pj_loop && max_index_j[pjd] < count_i; pjd++) {
// for (int pjd = 0; pjd <= last_pj_loop && max_index_j[pjd] < count_i;
// pjd++) {
for (int pjd = 0; pjd <= last_pj_loop; pjd++) {
/* Get a hold of the jth part in cj. */
......
src/tools.c
View file @ 0cab6204
......@@ -32,6 +32,7 @@
#include "tools.h"
/* Local includes. */
#include "active.h"
#include "cell.h"
#include "error.h"
#include "gravity.h"
......@@ -39,7 +40,6 @@
#include "part.h"
#include "periodic.h"
#include "runner.h"
#include "active.h"
/**
* Factorize a given integer, attempts to keep larger pair of factors.
......@@ -194,7 +194,7 @@ void pairs_all_density(struct runner *r, struct cell *ci, struct cell *cj) {
hig2 = hi * hi * kernel_gamma2;
/* Skip inactive particles. */
if(!part_is_active(pi,e)) continue;
if (!part_is_active(pi, e)) continue;
for (int j = 0; j < cj->count; ++j) {
......@@ -225,8 +225,8 @@ void pairs_all_density(struct runner *r, struct cell *ci, struct cell *cj) {
hjg2 = hj * hj * kernel_gamma2;
/* Skip inactive particles. */
if(!part_is_active(pj,e)) continue;
if (!part_is_active(pj, e)) continue;
for (int i = 0; i < ci->count; ++i) {
pi = &ci->parts[i];
......@@ -344,14 +344,14 @@ void self_all_density(struct runner *r, struct cell *ci) {
}
/* Hit or miss? */
if (r2 < hig2 && part_is_active(pi,e)) {
if (r2 < hig2 && part_is_active(pi, e)) {
/* Interact */
runner_iact_nonsym_density(r2, dxi, hi, hj, pi, pj);
}
/* Hit or miss? */
if (r2 < hjg2 && part_is_active(pj,e)) {
if (r2 < hjg2 && part_is_active(pj, e)) {
dxi[0] = -dxi[0];
dxi[1] = -dxi[1];
......
tests/testActivePair.c
View file @ 0cab6204
......@@ -23,8 +23,8 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include <unistd.h>
/* Local headers. */
#include "swift.h"
......@@ -65,14 +65,14 @@ struct cell *make_cell(size_t n, double *offset, double size, double h,
for (size_t y = 0; y < n; ++y) {
for (size_t z = 0; z < n; ++z) {
part->x[0] =
offset[0] +
size * (x + 0.5 + random_uniform(-0.5, 0.5) * pert) / (float)n;
offset[0] +
size * (x + 0.5 + random_uniform(-0.5, 0.5) * pert) / (float)n;
part->x[1] =
offset[1] +
size * (y + 0.5 + random_uniform(-0.5, 0.5) * pert) / (float)n;
offset[1] +
size * (y + 0.5 + random_uniform(-0.5, 0.5) * pert) / (float)n;
part->x[2] =
offset[2] +
size * (z + 0.5 + random_uniform(-0.5, 0.5) * pert) / (float)n;
offset[2] +
size * (z + 0.5 + random_uniform(-0.5, 0.5) * pert) / (float)n;
part->v[0] = random_uniform(-0.05, 0.05);
part->v[1] = random_uniform(-0.05, 0.05);
part->v[2] = random_uniform(-0.05, 0.05);
......@@ -101,8 +101,8 @@ struct cell *make_cell(size_t n, double *offset, double size, double h,
part->entropy = 1.f;
part->entropy_one_over_gamma = 1.f;
#endif
if (random_uniform(0,1.f) < fraction_active)
part->time_bin = 1;
if (random_uniform(0, 1.f) < fraction_active)
part->time_bin = 1;
else
part->time_bin = num_time_bins + 1;
......@@ -137,7 +137,7 @@ struct cell *make_cell(size_t n, double *offset, double size, double h,
cell->sorted = 0;
for (int k = 0; k < 13; k++) cell->sort[k] = NULL;
return cell;
}
......@@ -177,24 +177,19 @@ void dump_particle_fields(char *fileName, struct cell *ci, struct cell *cj) {
FILE *file = fopen(fileName, "a");
/* Write header */
fprintf(file,
"# %4s %13s\n", "ID", "wcount");
fprintf(file, "# %4s %13s\n", "ID", "wcount");
fprintf(file, "# ci --------------------------------------------\n");
for (int pid = 0; pid < ci->count; pid++) {
fprintf(file,
"%6llu %13e\n",
ci->parts[pid].id,
fprintf(file, "%6llu %13e\n", ci->parts[pid].id,
ci->parts[pid].density.wcount);
}
fprintf(file, "# cj --------------------------------------------\n");
for (int pjd = 0; pjd < cj->count; pjd++) {
fprintf(file,
"%6llu %13e\n",
cj->parts[pjd].id,
fprintf(file, "%6llu %13e\n", cj->parts[pjd].id,
cj->parts[pjd].density.wcount);
}
......@@ -208,10 +203,11 @@ void runner_dopair1_branch_density(struct runner *r, struct cell *ci,
struct cell *cj);
/**
* @brief Computes the pair interactions of two cells using SWIFT and a brute force implementation.
* @brief Computes the pair interactions of two cells using SWIFT and a brute
* force implementation.
*/
void test_pair_interactions(struct runner *runner,
struct cell **ci, struct cell **cj, char *swiftOutputFileName,
void test_pair_interactions(struct runner *runner, struct cell **ci,
struct cell **cj, char *swiftOutputFileName,
char *bruteForceOutputFileName) {
runner_do_sort(runner, *ci, 0x1FFF, 0, 0);
......@@ -227,7 +223,7 @@ void test_pair_interactions(struct runner *runner,
/* Let's get physical ! */
end_calculation(*ci);
end_calculation(*cj);
/* Dump if necessary */
dump_particle_fields(swiftOutputFileName, *ci, *cj);
......@@ -245,70 +241,90 @@ void test_pair_interactions(struct runner *runner,
end_calculation(*cj);
dump_particle_fields(bruteForceOutputFileName, *ci, *cj);
}
/**
* @brief Computes the pair interactions of two cells in various configurations.
*/
void test_all_pair_interactions(struct runner *runner,
double *offset2, size_t particles, double size, double h, double rho, long long *partId, double perturbation, double h_pert, char *swiftOutputFileName,
char *bruteForceOutputFileName) {
void test_all_pair_interactions(struct runner *runner, double *offset2,
size_t particles, double size, double h,
double rho, long long *partId,
double perturbation, double h_pert,
char *swiftOutputFileName,
char *bruteForceOutputFileName) {
double offset1[3] = {0, 0, 0};
struct cell *ci, *cj;
/* All active particles. */
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert, 1.);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert, 1.);
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert,
1.);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert,
1.);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
clean_up(ci);
clean_up(cj);
/* Half particles are active. */
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert, 0.5);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert, 0.5);
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert,
0.5);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert,
0.5);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
clean_up(ci);
clean_up(cj);
/* All particles inactive. */
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert, 0.);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert, 0.);
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert,
0.);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert,
0.);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
clean_up(ci);
clean_up(cj);
/* 10% of particles active. */
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert, 0.1);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert, 0.1);
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert,
0.1);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert,
0.1);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
clean_up(ci);
clean_up(cj);
/* One active cell one inactive cell. */
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert, 1.0);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert, 0.);
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert,
1.0);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert,
0.);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
clean_up(ci);
clean_up(cj);
/* One active cell one inactive cell. */
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert, 0.);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert, 1.0);
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert,
0.);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert,
1.0);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
clean_up(ci);
clean_up(cj);
......@@ -316,8 +332,9 @@ void test_all_pair_interactions(struct runner *runner,
ci = make_cell(2, offset1, size, h, rho, partId, perturbation, h_pert, 1.0);
cj = make_cell(2, offset2, size, h, rho, partId, perturbation, h_pert, 1.0);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
clean_up(ci);
clean_up(cj);
......@@ -325,26 +342,33 @@ void test_all_pair_interactions(struct runner *runner,
ci = make_cell(10, offset1, size, h, rho, partId, perturbation, h_pert, 0.5);
cj = make_cell(3, offset2, size, h, rho, partId, perturbation, h_pert, 0.75);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
clean_up(ci);
clean_up(cj);
/* One cell inactive and the other only half active. */
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert, 0.5);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert, 0.);
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert,
0.5);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert,
0.);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
clean_up(ci);
clean_up(cj);
/* One cell inactive and the other only half active. */
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert, 0.);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert, 0.5);
ci = make_cell(particles, offset1, size, h, rho, partId, perturbation, h_pert,
0.);
cj = make_cell(particles, offset2, size, h, rho, partId, perturbation, h_pert,
0.5);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName,
bruteForceOutputFileName);
test_pair_interactions(runner, &ci, &cj, swiftOutputFileName, bruteForceOutputFileName);
/* Clean things to make the sanitizer happy ... */
clean_up(ci);
clean_up(cj);
......@@ -424,27 +448,26 @@ int main(int argc, char *argv[]) {
/* Seed RNG. */
message("Seed used for RNG: %d", seed);
srand(seed);
space.periodic = 0;
engine.s = &space;
engine.time = 0.1f;
engine.ti_current = 8;
engine.max_active_bin = num_time_bins;
if (posix_memalign((void **)&runner, part_align,
sizeof(struct runner)) != 0) {
if (posix_memalign((void **)&runner, part_align, sizeof(struct runner)) !=
0) {
error("couldn't allocate runner");
}
runner->e = &engine;
/* Create output file names. */
sprintf(swiftOutputFileName, "swift_dopair_%s.dat",
outputFileNameExtension);
sprintf(swiftOutputFileName, "swift_dopair_%s.dat", outputFileNameExtension);
sprintf(bruteForceOutputFileName, "brute_force_%s.dat",
outputFileNameExtension);
/* Delete files if they already exist. */
remove(swiftOutputFileName);
remove(bruteForceOutputFileName);
......@@ -456,17 +479,27 @@ int main(int argc, char *argv[]) {
cache_init(&runner->cj_cache, 512);
#endif
double offset[3] = {1.,0.,0.};
double offset[3] = {1., 0., 0.};
/* Test a pair of cells face-on. */
test_all_pair_interactions(runner, offset, particles, size, h, rho, &partId, perturbation, h_pert, swiftOutputFileName, bruteForceOutputFileName);
test_all_pair_interactions(runner, offset, particles, size, h, rho, &partId,
perturbation, h_pert, swiftOutputFileName,
bruteForceOutputFileName);
/* Test a pair of cells edge-on. */
offset[0] = 1.; offset[1] = 1.; offset[2] = 0.;
test_all_pair_interactions(runner, offset, particles, size, h, rho, &partId, perturbation, h_pert, swiftOutputFileName, bruteForceOutputFileName);
offset[0] = 1.;
offset[1] = 1.;
offset[2] = 0.;
test_all_pair_interactions(runner, offset, particles, size, h, rho, &partId,
perturbation, h_pert, swiftOutputFileName,
bruteForceOutputFileName);
/* Test a pair of cells corner-on. */
offset[0] = 1.; offset[1] = 1.; offset[2] = 1.;
test_all_pair_interactions(runner, offset, particles, size, h, rho, &partId, perturbation, h_pert, swiftOutputFileName, bruteForceOutputFileName);
offset[0] = 1.;
offset[1] = 1.;
offset[2] = 1.;
test_all_pair_interactions(runner, offset, particles, size, h, rho, &partId,
perturbation, h_pert, swiftOutputFileName,
bruteForceOutputFileName);
return 0;
}
tests/testInteractions.c
View file @ 0cab6204
......@@ -310,7 +310,7 @@ void test_interactions(struct part test_part, struct part *parts, size_t count,
vjzq[i] = pj_vec[i].v[2];
}
/* Perform vector interaction. */
/* Perform vector interaction. */
vector hi_vec, hi_inv_vec, vix_vec, viy_vec, viz_vec;
vector rhoSum, rho_dhSum, wcountSum, wcount_dhSum, div_vSum, curlvxSum,
curlvySum, curlvzSum;
......@@ -377,7 +377,7 @@ void test_interactions(struct part test_part, struct part *parts, size_t count,
dump_indv_particle_fields(vec_filename, piq[0]);
for (size_t i = 0; i < count; i++)
dump_indv_particle_fields(vec_filename, pjq[i]);
/* Check serial results against the vectorised results. */
if (check_results(pi_serial, pj_serial, pi_vec, pj_vec, count))
message("Differences found...");
......@@ -454,6 +454,6 @@ int main(int argc, char *argv[]) {
#else
int main() {return 1;}
int main() { return 1; }
#endif
tests/testPeriodicBC.c
View file @ 0cab6204
......@@ -517,7 +517,8 @@ int main(int argc, char *argv[]) {
const int half_dim = (dim - 1) / 2;
/* Test the periodic boundary conditions for each of the 8 corners. Interact each corner with all of its 26 neighbours.*/
/* Test the periodic boundary conditions for each of the 8 corners. Interact
* each corner with all of its 26 neighbours.*/
test_boundary_conditions(cells, runner, 0, 0, 0, dim, swiftOutputFileName,
bruteForceOutputFileName);
test_boundary_conditions(cells, runner, dim - 1, 0, 0, dim,
......
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