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/*
This file is part of p4est.
p4est is a C library to manage a collection (a forest) of multiple
connected adaptive quadtrees or octrees in parallel.
Copyright (C) 2010 The University of Texas System
Additional copyright (C) 2011 individual authors
Written by Carsten Burstedde, Lucas C. Wilcox, and Tobin Isaac
p4est is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
p4est is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with p4est; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef P4_TO_P8
#include <p4est_bits.h>
#include <p4est_extended.h>
#include <p4est_vtk.h>
#else
#include <p8est_bits.h>
#include <p8est_extended.h>
#include <p8est_vtk.h>
#endif
#include <sc_options.h>
/* #define LOADCONN_VTK */
static int refine_level;
static int level_shift;
static int
refine_fractal (p4est_t * p4est, p4est_topidx_t which_tree,
p4est_quadrant_t * q)
{
int qid;
if ((int) q->level >= refine_level) {
return 0;
}
if ((int) q->level < refine_level - level_shift) {
return 1;
}
qid = ((int) q->level == 0 ?
(which_tree % P4EST_CHILDREN) : p4est_quadrant_child_id (q));
return (qid == 0 || qid == 3
#ifdef P4_TO_P8
|| qid == 5 || qid == 6
#endif
);
}
static void
run_load (sc_MPI_Comm mpicomm, p4est_connectivity_t * conn, int level)
{
int mpiret;
double elapsed_create, elapsed_partition, elapsed_balance;
#ifdef LOADCONN_VTK
char filename[BUFSIZ];
#endif
p4est_t *p4est;
P4EST_GLOBAL_PRODUCTIONF ("Run load on level %d\n", level);
/* create and refine the forest */
mpiret = sc_MPI_Barrier (mpicomm);
SC_CHECK_MPI (mpiret);
elapsed_create = -sc_MPI_Wtime ();
p4est = p4est_new_ext (mpicomm, conn, 0, level, 1, 0, NULL, NULL);
level_shift = 4;
refine_level = level + level_shift;
p4est_refine (p4est, 1, refine_fractal, NULL);
elapsed_create += sc_MPI_Wtime ();
#ifdef LOADCONN_VTK
snprintf (filename, BUFSIZ, "loadconn%d_%02d_C", P4EST_DIM, level);
p4est_vtk_write_file (p4est, NULL, filename);
#endif
/* partition the forest */
mpiret = sc_MPI_Barrier (mpicomm);
SC_CHECK_MPI (mpiret);
elapsed_partition = -sc_MPI_Wtime ();
p4est_partition (p4est, 0, NULL);
elapsed_partition += sc_MPI_Wtime ();
/* balance the forest */
mpiret = sc_MPI_Barrier (mpicomm);
SC_CHECK_MPI (mpiret);
elapsed_balance = -sc_MPI_Wtime ();
p4est_balance (p4est, P4EST_CONNECT_FULL, NULL);
elapsed_balance += sc_MPI_Wtime ();
#ifdef LOADCONN_VTK
snprintf (filename, BUFSIZ, "loadconn%d_%02d_B", P4EST_DIM, level);
p4est_vtk_write_file (p4est, NULL, filename);
#endif
/* report timings */
P4EST_GLOBAL_PRODUCTIONF ("Timings %d: %g %g %g\n", level, elapsed_create,
elapsed_partition, elapsed_balance);
p4est_destroy (p4est);
}
int
main (int argc, char **argv)
{
sc_MPI_Comm mpicomm;
int mpiret, retval;
int level;
const char *filename;
p4est_connectivity_t *conn;
sc_options_t *opt;
mpiret = sc_MPI_Init (&argc, &argv);
SC_CHECK_MPI (mpiret);
mpicomm = sc_MPI_COMM_WORLD;
sc_init (sc_MPI_COMM_WORLD, 1, 1, NULL, SC_LP_DEFAULT);
p4est_init (NULL, SC_LP_DEFAULT);
opt = sc_options_new (argv[0]);
sc_options_add_int (opt, 'l', "level", &level, 0,
"Upfront refinement level");
retval = sc_options_parse (p4est_package_id, SC_LP_ERROR, opt, argc, argv);
if (retval == -1 || retval + 1 != argc) {
sc_options_print_usage (p4est_package_id, SC_LP_PRODUCTION, opt, NULL);
sc_abort_collective ("Usage error");
}
filename = argv[retval];
P4EST_LDEBUGF ("Loading %s\n", filename);
conn = p4est_connectivity_load (filename, NULL);
run_load (mpicomm, conn, level);
p4est_connectivity_destroy (conn);
sc_options_destroy (opt);
sc_finalize ();
mpiret = sc_MPI_Finalize ();
SC_CHECK_MPI (mpiret);
return 0;
}
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