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Attempting to get fast active search working

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This commit is contained in:
Yohai Meiron 2020-05-01 00:27:41 -04:00
parent d046c189b3
commit 2f8f8c582c
2 changed files with 97 additions and 60 deletions
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2
io.h
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@ -5,7 +5,7 @@
bool is_hdf5(std::string file_name);
// This function is implemented independently of the HDF5 library
void ascii_read(const std::string file_name, int *step_num, int *N, double *t, double *m, double3 *x, double3 *v);
void ascii_read(const std::string file_name, int& step_num, int& N, double& t, double **m, double3 **x, double3 **v);
void ascii_write(const std::string file_name, const int step_num, const int N, const double t, const double *m, const double3 *x, const double3 *v, int precision=10);

155
phigrape.cpp
View file

@ -82,7 +82,9 @@ Last redaction : 2019.04.16 12:55
#ifdef ETICS
#include "grapite.h"
//#define ACT_DEF_GRAPITE
#endif
const bool act_def_grapite = true;
Config *config;
@ -248,42 +250,44 @@ public:
double get_minimum_time(const double t[], const double dt[])
{
double min_t_loc, min_t;
#ifdef ACT_DEF_GRAPITE
min_t_loc = grapite_get_minimum_time();
#else
min_t_loc = t[myRank*n_loc]+dt[myRank*n_loc];
for (int j=myRank*n_loc+1; j<(myRank+1)*n_loc; j++) {
double tmp = t[j] + dt[j];
if (tmp < min_t_loc) min_t_loc = tmp;
if (act_def_grapite) {
min_t_loc = grapite_get_minimum_time();
printf("gggggggggggg min_t_loc=%.10e\n", min_t_loc);
} else {
min_t_loc = t[myRank*n_loc]+dt[myRank*n_loc];
for (int j=myRank*n_loc+1; j<(myRank+1)*n_loc; j++) {
double tmp = t[j] + dt[j];
if (tmp < min_t_loc) min_t_loc = tmp;
}
}
#endif
/* Reduce the "global" min_t from min_t_loc "local" on all processors) */
MPI_Allreduce(&min_t_loc, &min_t, 1, MPI_DOUBLE, MPI_MIN, MPI_COMM_WORLD);
return min_t;
}
void get_active_indices(const double min_t, const double t[], const double dt[], int ind_act[], int *n_act)
#warning refrence not pointer
{
#ifdef ACT_DEF_GRAPITE
int n_act_loc;
grapite_active_search(min_t, ind_act_loc, &n_act_loc);
if (myRank > 0)
for (int i=0; i<n_act_loc; i++)
ind_act_loc[i] += myRank*n_loc;
int n_act_arr[256], displs[256]; // Assuming maximum of 256 processes... seems safe.
MPI_Allgather(&n_act_loc, 1, MPI_INT, n_act_arr, 1, MPI_INT, MPI_COMM_WORLD);
*n_act = n_act_arr[0];
for (int i=1; i<n_proc; i++)
*n_act += n_act_arr[i];
displs[0] = 0;
for (int i=1; i<n_proc; i++)
displs[i]=displs[i-1]+n_act_arr[i-1];
MPI_Allgatherv(ind_act_loc, n_act_loc, MPI_INT, ind_act, n_act_arr, displs, MPI_INT, MPI_COMM_WORLD);
#else
*n_act = 0;
for (int i=0; i<N; i++) {
if (t[i]+dt[i] == min_t) ind_act[(*n_act)++] = i;
} /* i */
#endif // ACT_DEF_GRAPITE
if (act_def_grapite) {
int n_act_loc;
grapite_active_search(min_t, ind_act_loc, &n_act_loc);
if (myRank > 0)
for (int i=0; i<n_act_loc; i++)
ind_act_loc[i] += myRank*n_loc;
int n_act_arr[256], displs[256]; // Assuming maximum of 256 processes... seems safe.
MPI_Allgather(&n_act_loc, 1, MPI_INT, n_act_arr, 1, MPI_INT, MPI_COMM_WORLD);
*n_act = n_act_arr[0];
for (int i=1; i<n_proc; i++)
*n_act += n_act_arr[i];
displs[0] = 0;
for (int i=1; i<n_proc; i++)
displs[i]=displs[i-1]+n_act_arr[i-1];
MPI_Allgatherv(ind_act_loc, n_act_loc, MPI_INT, ind_act, n_act_arr, displs, MPI_INT, MPI_COMM_WORLD);
} else {
*n_act = 0;
for (int i=0; i<N; i++) {
if (t[i]+dt[i] == min_t) ind_act[(*n_act)++] = i;
} /* i */
}
}
private:
int myRank, n_proc, n_loc, N;
@ -670,6 +674,7 @@ int main(int argc, char *argv[])
#endif
double min_t = active_search.get_minimum_time(t, dt);
printf("zzzzzzzzzzzzzzzzz %.10e\n", min_t);
#ifdef TIMING
get_CPU_time(&CPU_tmp_real, &CPU_tmp_user, &CPU_tmp_syst);
@ -683,39 +688,71 @@ int main(int argc, char *argv[])
active_search.get_active_indices(min_t, t, dt, ind_act, &n_act);
// TODO deal with it below
#ifdef ACT_DEF_GRAPITE
#error please fix here
#endif
#if defined(ACT_DEF_GRAPITE) && (defined(ADD_BH1) || defined(ADD_BH2))
#ifdef ADD_BH1
#define ACT_DEF_GRAPITE_NUMBH 1
#else
#define ACT_DEF_GRAPITE_NUMBH 2
#endif
int acf_def_grapite_bh_count = 0;
for (i=0; i<n_act; i++) {
if (ind_act[i]==0) {
i_bh1 = i;
acf_def_grapite_bh_count++;
}
#ifdef ADD_BH2
else if (ind_act[i]==1) {
i_bh2 = i;
acf_def_grapite_bh_count++;
// #ifdef ACT_DEF_GRAPITE
// #error please fix here
// #endif
static int printouts = 0;
int n_bh = config->live_smbh_count;
if (n_bh>0) {
if (act_def_grapite) {
int act_def_grapite_bh_count = 0;
int i_bh[n_bh];
for (int i=0; i<n_act; i++) {
if (ind_act[i]<n_bh) {
i_bh[ind_act[i]] = i;
if (++act_def_grapite_bh_count == n_bh) break;
}
}
i_bh1 = i_bh[0];
if (n_bh == 2) i_bh2 = i_bh[1];
} else {
i_bh1 == 0;
if (n_bh == 2) i_bh2 = 1;
}
#endif
if (acf_def_grapite_bh_count==ACT_DEF_GRAPITE_NUMBH) break;
}
if (i==n_act) {
fprintf(stderr, "ERROR: black holes were not found in the active particle list");
exit(1);
printf("previously got i_bh1=%d and i_bh2=%d\n", i_bh1, i_bh2);
for (int i=0; i<n_act; i++) {
if (ind_act[i]==0) i_bh1=i;
if (ind_act[i]==1) i_bh2=i;
}
#else
if (config->live_smbh_count > 0) {
i_bh1 = 0;
i_bh2 = 1;
}
#endif
printf("now finding i_bh1=%d and i_bh2=%d\n", i_bh1, i_bh2);
if (++printouts >= 10) return 0;
// #if defined(ACT_DEF_GRAPITE) && (defined(ADD_BH1) || defined(ADD_BH2))
// #ifdef ADD_BH1
// #define ACT_DEF_GRAPITE_NUMBH 1
// #else
// #define ACT_DEF_GRAPITE_NUMBH 2
// #endif
// int act_def_grapite_bh_count = 0;
// for (i=0; i<n_act; i++) {
// if (ind_act[i]==0) {
// i_bh1 = i;
// act_def_grapite_bh_count++;
// }
// #ifdef ADD_BH2
// else if (ind_act[i]==1) {
// i_bh2 = i;
// act_def_grapite_bh_count++;
// }
// #endif
// if (act_def_grapite_bh_count==config->live_smbh_count) break;
// }
// if (i==n_act) {
// fprintf(stderr, "ERROR: black holes were not found in the active particle list");
// return -1;
// }
// #else
// if (config->live_smbh_count > 0) {
// i_bh1 = 0;
// i_bh2 = 1;
// }
// #endif
#ifdef TIMING
get_CPU_time(&CPU_tmp_real, &CPU_tmp_user, &CPU_tmp_syst);