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xtrapulp.cpp
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xtrapulp.cpp
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#include <math.h>
#include <mpi.h>
#include <omp.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/time.h>
#include <time.h>
#include <cstdlib>
#include <cstring>
#include "xtrapulp.h"
#include "comms.h"
#include "dist_graph.h"
#include "pulp_data.h"
#include "pulp_init.h"
#include "pulp_v.h"
#include "pulp_ve.h"
#include "pulp_vec.h"
int procid, nprocs;
int seed;
bool verbose, debug, verify;
float X, Y;
extern "C" int xtrapulp_run(dist_graph_t* g, pulp_part_control_t* ppc,
int* parts, int num_parts) {
mpi_data_t comm;
pulp_data_t pulp;
queue_data_t q;
init_comm_data(&comm);
init_pulp_data(g, &pulp, num_parts);
init_queue_data(g, &q);
if (ppc->do_repart)
memcpy(pulp.local_parts, parts, g->n_local * sizeof(int32_t));
xtrapulp(g, ppc, &comm, &pulp, &q);
memcpy(parts, pulp.local_parts, g->n_local * sizeof(int32_t));
clear_comm_data(&comm);
clear_pulp_data(&pulp);
clear_queue_data(&q);
return 0;
}
extern "C" int xtrapulp(dist_graph_t* g, pulp_part_control_t* ppc,
mpi_data_t* comm, pulp_data_t* pulp, queue_data_t* q) {
double vert_balance = ppc->vert_balance;
// double vert_balance_lower = 0.25;
double edge_balance = ppc->edge_balance;
double do_label_prop = ppc->do_lp_init;
double do_nonrandom_init = ppc->do_bfs_init;
verbose = ppc->verbose_output;
debug = false;
bool do_vert_balance = true;
bool do_edge_balance = ppc->do_edge_balance;
bool do_maxcut_balance = ppc->do_maxcut_balance;
bool do_repart = ppc->do_repart;
bool has_vert_weights = (g->vertex_weights != NULL);
bool has_edge_weights = (g->edge_weights != NULL);
int balance_outer_iter = 1;
int label_prop_iter = 3;
int vert_outer_iter = 3;
int vert_balance_iter = 5;
int vert_refine_iter = 10;
// int edge_outer_iter = 3;
// int edge_balance_iter = 5;
// int edge_refine_iter = 10;
int num_parts = (int)pulp->num_parts;
seed = ppc->pulp_seed;
X = 1.0;
Y = 0.25;
// Tighten up allowable exchange for small graphs,
// and just use block initialization
if (g->n / (long unsigned)nprocs < 100) {
Y = 1.0;
X = 2.0;
do_label_prop = false;
do_nonrandom_init = false;
}
double elt, elt2, elt3;
elt = timer();
if (do_label_prop && (has_vert_weights || has_edge_weights)) {
if (procid == 0 && verbose)
printf("\tDoing (weighted) lp init stage with %d parts\n", num_parts);
elt2 = timer();
pulp_init_label_prop_weighted(g, comm, q, pulp, label_prop_iter);
elt2 = timer() - elt2;
if (procid == 0 && verbose) printf("done: %9.6lf(s)\n", elt2);
} else if (do_label_prop) {
if (procid == 0 && verbose)
printf("\tDoing lp init stage with %d parts\n", num_parts);
elt2 = timer();
pulp_init_label_prop(g, comm, q, pulp, label_prop_iter);
elt2 = timer() - elt2;
if (procid == 0 && verbose) printf("done: %9.6lf(s)\n", elt2);
} else if (do_nonrandom_init) {
if (procid == 0 && verbose)
printf("\tDoing bfs init stage with %d parts\n", num_parts);
elt2 = timer();
pulp_init_bfs_max(g, comm, q, pulp);
elt2 = timer() - elt2;
if (procid == 0 && verbose) printf("done: %9.6lf(s)\n", elt2);
} else if (!do_repart) {
if (procid == 0 && verbose)
printf("\tDoing block init stage with %d parts\n", num_parts);
elt2 = timer();
pulp_init_block(g, comm, q, pulp);
elt2 = timer() - elt2;
if (procid == 0 && verbose) printf("done: %9.6lf(s)\n", elt2);
}
if (procid == 0 && verbose)
printf("\tBeginning vertex (and edge) refinement\n");
for (int boi = 0; boi < balance_outer_iter; ++boi) {
elt2 = timer();
if (do_vert_balance && (has_vert_weights || has_edge_weights)) {
if (procid == 0 && verbose)
printf("\t\tDoing (weighted) vert balance and refinement stage\n");
elt3 = timer();
pulp_v_weighted(g, comm, q, pulp, vert_outer_iter, vert_balance_iter,
vert_refine_iter, vert_balance, edge_balance);
elt3 = timer() - elt3;
if (procid == 0 && verbose) printf("done: %9.6lf(s)\n", elt3);
} else if (do_vert_balance) {
if (procid == 0 && verbose)
printf("\t\tDoing vert balance and refinement stage\n");
elt3 = timer();
pulp_v(g, comm, q, pulp, vert_outer_iter, vert_balance_iter,
vert_refine_iter, vert_balance, edge_balance);
elt3 = timer() - elt3;
if (procid == 0 && verbose) printf("done: %9.6lf(s)\n", elt3);
}
if (do_edge_balance && !do_maxcut_balance &&
(has_vert_weights || has_edge_weights)) {
if (procid == 0 && verbose)
printf("\t\tDoing (weighted) edge balance and refinement stage\n");
elt3 = timer();
pulp_ve_weighted(g, comm, q, pulp, vert_outer_iter, vert_balance_iter,
vert_refine_iter, vert_balance, edge_balance);
elt3 = timer() - elt3;
if (procid == 0 && verbose) printf("done: %9.6lf(s)\n", elt3);
} else if (do_edge_balance && !do_maxcut_balance) {
if (procid == 0 && verbose)
printf("\t\tDoing edge balance and refinement stage\n");
elt3 = timer();
pulp_ve(g, comm, q, pulp, vert_outer_iter, vert_balance_iter,
vert_refine_iter, vert_balance, edge_balance);
elt3 = timer() - elt3;
if (procid == 0 && verbose) printf("done: %9.6lf(s)\n", elt3);
} else if (do_edge_balance && do_maxcut_balance &&
(has_vert_weights || has_edge_weights)) {
if (procid == 0 && verbose)
printf("\t\tDoing (weighted) maxcut balance and refinement stage\n");
elt3 = timer();
pulp_vec_weighted(g, comm, q, pulp, vert_outer_iter, vert_balance_iter,
vert_refine_iter, vert_balance, edge_balance);
elt3 = timer() - elt3;
if (procid == 0 && verbose) printf("done: %9.6lfs\n", elt3);
} else if (do_edge_balance && do_maxcut_balance) {
if (procid == 0 && verbose)
printf("\t\tDoing maxcut balance and refinement stage\n");
elt3 = timer();
pulp_vec(g, comm, q, pulp, vert_outer_iter, vert_balance_iter,
vert_refine_iter, vert_balance, edge_balance);
elt3 = timer() - elt3;
if (procid == 0 && verbose) printf("done: %9.6lfs\n", elt3);
}
elt2 = timer() - elt2;
if (procid == 0 && verbose)
printf("\tFinished outer loop iter %d: %9.6lf(s)\n", (boi + 1), elt2);
}
elt = timer() - elt;
if (procid == 0 && verbose) printf("Partitioning finished: %9.6lf(s)\n", elt);
return 0;
}
extern "C" int create_xtrapulp_dist_graph(
dist_graph_t* g, unsigned long n_global, unsigned long m_global,
unsigned long n_local, unsigned long m_local, unsigned long* local_adjs,
unsigned long* local_offsets, unsigned long* global_ids,
unsigned long* vert_dist, int* vertex_weights, int* edge_weights) {
MPI_Comm_rank(MPI_COMM_WORLD, &procid);
MPI_Comm_size(MPI_COMM_WORLD, &nprocs);
if (nprocs > 1) {
create_graph(g, (uint64_t)n_global, (uint64_t)m_global, (uint64_t)n_local,
(uint64_t)m_local, (uint64_t*)local_offsets,
(uint64_t*)local_adjs, (uint64_t*)global_ids,
(int32_t*)vertex_weights, (int32_t*)edge_weights);
relabel_edges(g, vert_dist);
} else {
create_graph_serial(g, (uint64_t)n_global, (uint64_t)m_global,
(uint64_t)n_local, (uint64_t)m_local,
(uint64_t*)local_offsets, (uint64_t*)local_adjs,
(int32_t*)vertex_weights, (int32_t*)edge_weights);
}
get_ghost_degrees(g);
// get_ghost_weights(g);
return 0;
}