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ref_migrate.c
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ref_migrate.c
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/* Copyright 2014 United States Government as represented by the
* Administrator of the National Aeronautics and Space
* Administration. No copyright is claimed in the United States under
* Title 17, U.S. Code. All Other Rights Reserved.
*
* The refine platform is licensed under the Apache License, Version
* 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if defined(HAVE_ZOLTAN) && defined(HAVE_MPI)
#undef HAVE_MPI /* sometimes defined by zoltan.h */
#include "zoltan.h"
#ifndef HAVE_MPI
#define HAVE_MPI
#endif
#endif
#if defined(HAVE_PARMETIS) && defined(HAVE_MPI)
#include "mpi.h"
#include "parmetis.h"
#if PARMETIS_MAJOR_VERSION == 3
#define PARM_INT idxtype
#define PARM_REAL float
#else
#define PARM_INT idx_t
#define PARM_REAL real_t
#endif
#endif
#include "ref_export.h"
#include "ref_malloc.h"
#include "ref_math.h"
#include "ref_matrix.h"
#include "ref_migrate.h"
#include "ref_mpi.h"
#include "ref_node.h"
#include "ref_part.h"
#include "ref_sort.h"
REF_STATUS ref_migrate_create(REF_MIGRATE *ref_migrate_ptr, REF_GRID ref_grid) {
REF_MIGRATE ref_migrate;
REF_NODE ref_node = ref_grid_node(ref_grid);
REF_CELL ref_cell;
REF_INT node;
REF_INT group, cell, cell_edge, n0, n1;
ref_malloc(*ref_migrate_ptr, 1, REF_MIGRATE_STRUCT);
ref_migrate = *ref_migrate_ptr;
ref_migrate_grid(ref_migrate) = ref_grid;
RSS(ref_adj_create(&(ref_migrate_parent_local(ref_migrate))), "make adj");
RSS(ref_adj_create(&(ref_migrate_parent_part(ref_migrate))), "make adj");
RSS(ref_adj_create(&(ref_migrate_conn(ref_migrate))), "make adj");
ref_migrate_max(ref_migrate) = ref_node_max(ref_node);
ref_malloc_init(ref_migrate->global, ref_migrate_max(ref_migrate), REF_GLOB,
REF_EMPTY);
ref_malloc(ref_migrate->xyz, 3 * ref_migrate_max(ref_migrate), REF_DBL);
ref_malloc(ref_migrate->weight, ref_migrate_max(ref_migrate), REF_DBL);
ref_malloc(ref_migrate->age, ref_migrate_max(ref_migrate), REF_INT);
each_ref_node_valid_node(ref_node, node) {
if (ref_node_owned(ref_node, node)) {
ref_migrate_global(ref_migrate, node) = ref_node_global(ref_node, node);
RSS(ref_adj_add(ref_migrate_parent_local(ref_migrate), node, node),
"add");
RSS(ref_adj_add(ref_migrate_parent_part(ref_migrate), node,
ref_node_part(ref_node, node)),
"add");
ref_migrate_xyz(ref_migrate, 0, node) = ref_node_xyz(ref_node, 0, node);
ref_migrate_xyz(ref_migrate, 1, node) = ref_node_xyz(ref_node, 1, node);
ref_migrate_xyz(ref_migrate, 2, node) = ref_node_xyz(ref_node, 2, node);
ref_migrate_weight(ref_migrate, node) = 1.0;
ref_migrate_age(ref_migrate, node) = ref_node_age(ref_node, node);
}
}
RSS(ref_node_ghost_int(ref_node, (ref_migrate->age), 1),
"ghost age for edge weights");
/* 2d included for twod */
each_ref_grid_2d_3d_ref_cell(ref_grid, group, ref_cell) {
each_ref_cell_valid_cell(ref_cell, cell) {
each_ref_cell_cell_edge(ref_cell, cell_edge) {
/* need ghost nodes for agglomeration */
n0 = ref_cell_e2n(ref_cell, 0, cell_edge, cell);
n1 = ref_cell_e2n(ref_cell, 1, cell_edge, cell);
RSS(ref_adj_add_uniquely(ref_migrate_conn(ref_migrate), n0, n1),
"uniq");
RSS(ref_adj_add_uniquely(ref_migrate_conn(ref_migrate), n1, n0),
"uniq");
}
}
}
return REF_SUCCESS;
}
REF_STATUS ref_migrate_free(REF_MIGRATE ref_migrate) {
if (NULL == (void *)ref_migrate) return REF_NULL;
ref_free(ref_migrate->age);
ref_free(ref_migrate->weight);
ref_free(ref_migrate->xyz);
ref_free(ref_migrate->global);
RSS(ref_adj_free(ref_migrate_conn(ref_migrate)), "free adj");
RSS(ref_adj_free(ref_migrate_parent_part(ref_migrate)), "free adj");
RSS(ref_adj_free(ref_migrate_parent_local(ref_migrate)), "free adj");
ref_free(ref_migrate);
return REF_SUCCESS;
}
REF_STATUS ref_migrate_inspect(REF_MIGRATE ref_migrate) {
REF_NODE ref_node = ref_grid_node(ref_migrate_grid(ref_migrate));
REF_INT node, item, local, part;
REF_GLOB global;
each_ref_migrate_node(ref_migrate, node) {
printf(" %2d : " REF_GLOB_FMT " :", ref_mpi_rank(ref_node_mpi(ref_node)),
ref_node_global(ref_node, node));
each_ref_adj_node_item_with_ref(ref_migrate_parent_local(ref_migrate), node,
item, local) {
global = ref_migrate_global(ref_migrate, local);
part = ref_adj_item_ref(ref_migrate_parent_part(ref_migrate), item);
printf(" " REF_GLOB_FMT "+%d", global, part);
}
printf("\n");
}
return REF_SUCCESS;
}
REF_STATUS ref_migrate_2d_agglomeration_keep(REF_MIGRATE ref_migrate,
REF_INT keep, REF_INT lose) {
REF_NODE ref_node = ref_grid_node(ref_migrate_grid(ref_migrate));
REF_ADJ conn_adj = ref_migrate_conn(ref_migrate);
REF_INT item, local;
REF_GLOB global;
REF_INT from_node;
/* not working for general agglomeration, ghost lose? */
RAS(ref_node_valid(ref_node, keep), "keep node invalid");
RAS(ref_node_valid(ref_node, lose), "lose node invalid");
ref_migrate_global(ref_migrate, lose) = REF_EMPTY;
/* skip if the lose node has been agglomerated */
each_ref_adj_node_item_with_ref(ref_migrate_parent_local(ref_migrate), keep,
item, local) {
global = ref_migrate_global(ref_migrate, local);
if (global == ref_node_global(ref_node, lose)) {
return REF_SUCCESS;
}
}
/* update edges pointing to lose node */
each_ref_adj_node_item_with_ref(conn_adj, lose, item, from_node) {
RSS(ref_adj_remove(conn_adj, from_node, lose), "rm to lose");
if (from_node != keep) {
RSS(ref_adj_add_uniquely(conn_adj, from_node, keep), "add to keep");
RSS(ref_adj_add_uniquely(conn_adj, keep, from_node), "add to keep");
}
}
/* update edges pointing from lose node */
while (ref_adj_valid(ref_adj_first(conn_adj, lose))) {
RSS(ref_adj_remove(
conn_adj, lose,
ref_adj_item_ref(conn_adj, ref_adj_first(conn_adj, lose))),
"rm from lose");
}
/* skip if keep node is off-proc or already agglomerated */
if (!ref_migrate_valid(ref_migrate, keep)) return REF_SUCCESS;
ref_migrate_xyz(ref_migrate, 1, keep) = 0.5;
ref_migrate_weight(ref_migrate, keep) = 2.0;
/* collect age in general case */
RSS(ref_adj_add(ref_migrate_parent_local(ref_migrate), keep, lose), "add");
RSS(ref_adj_add(ref_migrate_parent_part(ref_migrate), keep,
ref_node_part(ref_node, lose)),
"add");
return REF_SUCCESS;
}
REF_STATUS ref_migrate_2d_agglomeration(REF_MIGRATE ref_migrate) {
REF_GRID ref_grid = ref_migrate_grid(ref_migrate);
REF_NODE ref_node = ref_grid_node(ref_migrate_grid(ref_migrate));
REF_INT cell;
REF_INT nodes[REF_CELL_MAX_SIZE_PER];
REF_INT keep, lose;
each_ref_cell_valid_cell_with_nodes(ref_grid_pri(ref_grid), cell, nodes) {
if (ref_node_global(ref_node, nodes[0]) <
ref_node_global(ref_node, nodes[3])) {
keep = nodes[0];
lose = nodes[3];
} else {
keep = nodes[3];
lose = nodes[0];
}
RSS(ref_migrate_2d_agglomeration_keep(ref_migrate, keep, lose), "0-3");
if (ref_node_global(ref_node, nodes[1]) <
ref_node_global(ref_node, nodes[4])) {
keep = nodes[1];
lose = nodes[4];
} else {
keep = nodes[4];
lose = nodes[1];
}
RSS(ref_migrate_2d_agglomeration_keep(ref_migrate, keep, lose), "1-4");
if (ref_node_global(ref_node, nodes[2]) <
ref_node_global(ref_node, nodes[5])) {
keep = nodes[2];
lose = nodes[5];
} else {
keep = nodes[5];
lose = nodes[2];
}
RSS(ref_migrate_2d_agglomeration_keep(ref_migrate, keep, lose), "2-5");
}
return REF_SUCCESS;
}
static REF_STATUS ref_migrate_report_load_balance(REF_GRID ref_grid,
REF_INT npart,
REF_INT *node_part) {
REF_NODE ref_node = ref_grid_node(ref_grid);
REF_MPI ref_mpi = ref_grid_mpi(ref_grid);
REF_INT min_part, max_part, node, proc, *partition_size;
ref_malloc_init(partition_size, ref_mpi_n(ref_mpi), REF_INT, 0);
each_ref_node_valid_node(ref_node, node) {
if (ref_node_owned(ref_node, node)) {
RAB(0 <= node_part[node] && node_part[node] < ref_mpi_n(ref_mpi),
"part out of range", {
printf("rank %d node %d node_part %d n %d", ref_mpi_rank(ref_mpi),
node, node_part[node], ref_mpi_n(ref_mpi));
});
partition_size[node_part[node]] += 1;
}
}
RSS(ref_mpi_allsum(ref_mpi, partition_size, ref_mpi_n(ref_mpi), REF_INT_TYPE),
"allsum");
min_part = INT_MAX;
max_part = 0;
for (proc = 0; proc < npart; proc++) {
min_part = MIN(min_part, partition_size[proc]);
max_part = MAX(max_part, partition_size[proc]);
}
if (ref_mpi_once(ref_mpi)) {
printf("balance %6.3f on %d of %d target %d size min %d max %d\n",
(REF_DBL)max_part / (REF_DBL)ref_node_n_global(ref_node) *
(REF_DBL)npart,
npart, ref_mpi_n(ref_mpi),
(REF_INT)(ref_node_n_global(ref_node) / (REF_GLOB)npart), min_part,
max_part);
}
ref_free(partition_size);
return REF_SUCCESS;
}
static REF_STATUS ref_migrate_single_part(REF_GRID ref_grid,
REF_INT *node_part) {
REF_NODE ref_node = ref_grid_node(ref_grid);
REF_INT node;
for (node = 0; node < ref_node_max(ref_node); node++) node_part[node] = 0;
ref_mpi_stopwatch_stop(ref_grid_mpi(ref_grid), "single part");
return REF_SUCCESS;
}
static REF_ULONG ref_migrate_split_morton(REF_ULONG a) {
REF_ULONG x = a & 0x1fffff; /* we only look at the first 21 bits */
x = (x | x << 32) & 0x1f00000000ffff;
/* shift left 32 bits, OR with self, and
00011111000000000000000000000000000000001111111111111111 */
x = (x | x << 16) & 0x1f0000ff0000ff;
/* shift left 32 bits, OR with self, and
00011111000000000000000011111111000000000000000011111111 */
x = (x | x << 8) & 0x100f00f00f00f00f;
/* shift left 32 bits, OR with self, and
0001000000001111000000001111000000001111000000001111000000000000 */
x = (x | x << 4) & 0x10c30c30c30c30c3;
/* shift left 32 bits, OR with self, and
0001000011000011000011000011000011000011000011000011000100000000 */
x = (x | x << 2) & 0x1249249249249249;
return x;
}
REF_ULONG ref_migrate_morton_id(REF_UINT x, REF_UINT y, REF_UINT z) {
REF_ULONG answer = 0;
answer |= ref_migrate_split_morton(x) | ref_migrate_split_morton(y) << 1 |
ref_migrate_split_morton(z) << 2;
return answer;
}
REF_STATUS ref_migrate_split_dir(REF_MPI ref_mpi, REF_INT n, REF_DBL *xyz,
REF_DBL *transform, REF_INT *dir) {
REF_DBL mins[3], maxes[3], temp, transformed[3];
REF_INT i, j;
*dir = 0;
for (j = 0; j < 3; j++) {
mins[j] = REF_DBL_MAX;
maxes[j] = REF_DBL_MIN;
}
for (i = 0; i < n; i++) {
RSS(ref_matrix_ax(3, transform, &(xyz[3 * i]), transformed), "ax");
for (j = 0; j < 3; j++) {
mins[j] = MIN(mins[j], transformed[j]);
maxes[j] = MAX(maxes[j], transformed[j]);
}
}
for (j = 0; j < 3; j++) {
temp = mins[j];
RSS(ref_mpi_min(ref_mpi, &temp, &(mins[j]), REF_DBL_TYPE), "min");
RSS(ref_mpi_bcast(ref_mpi, &(mins[j]), 1, REF_DBL_TYPE), "bcast");
temp = maxes[j];
RSS(ref_mpi_max(ref_mpi, &temp, &(maxes[j]), REF_DBL_TYPE), "max");
RSS(ref_mpi_bcast(ref_mpi, &(maxes[j]), 1, REF_DBL_TYPE), "bcast");
}
if ((maxes[1] - mins[1]) >= (maxes[0] - mins[0]) &&
(maxes[1] - mins[1]) >= (maxes[2] - mins[2]))
*dir = 1;
if ((maxes[2] - mins[2]) >= (maxes[0] - mins[0]) &&
(maxes[2] - mins[2]) >= (maxes[1] - mins[1]))
*dir = 2;
return REF_SUCCESS;
}
REF_STATUS ref_migrate_split_ratio(REF_INT number_of_partitions,
REF_DBL *ratio) {
REF_INT half = number_of_partitions / 2;
if (ref_math_divisible((REF_DBL)half, (REF_DBL)number_of_partitions)) {
*ratio = (REF_DBL)half / (REF_DBL)number_of_partitions;
} else {
*ratio = 0;
return REF_DIV_ZERO;
}
return REF_SUCCESS;
}
static REF_STATUS ref_migrate_native_rcb_direction(
REF_MPI ref_mpi, REF_INT n, REF_DBL *xyz, REF_DBL *transform, REF_INT npart,
REF_INT offset, REF_INT *owners, REF_INT *locals, REF_MPI global_mpi,
REF_INT *part, REF_INT seed, REF_INT dir, REF_BOOL twod) {
REF_INT i, j, n0, n1, npart0, npart1, offset0, offset1;
REF_INT bal_n0, bal_n1;
REF_DBL *xyz0, *xyz1, *x;
REF_DBL *bal_xyz0, *bal_xyz1;
REF_INT *owners0, *owners1;
REF_INT *bal_owners0, *bal_owners1;
REF_INT *locals0, *locals1;
REF_INT *bal_locals0, *bal_locals1;
REF_DBL ratio, value0, value1;
REF_LONG position, total;
REF_MPI split_mpi;
REF_INT seed_base = 3;
REF_DBL ratio_shift, ratio0, ratio1;
REF_BOOL cycle_dir = REF_FALSE;
if (0 == npart) return REF_SUCCESS;
if (1 == npart) {
REF_INT *my_id, *recv_part, *recv_locals, nrecv;
ref_malloc_init(my_id, n, REF_INT, offset);
RSS(ref_mpi_blindsend(global_mpi, owners, my_id, 1, n, (void **)&recv_part,
&nrecv, REF_INT_TYPE),
"recv part");
RSS(ref_mpi_blindsend(global_mpi, owners, locals, 1, n,
(void **)&recv_locals, &nrecv, REF_INT_TYPE),
"recv loc");
for (i = 0; i < nrecv; i++) part[recv_locals[i]] = recv_part[i];
ref_free(recv_part);
ref_free(recv_locals);
ref_free(my_id);
return REF_SUCCESS;
}
ref_malloc(x, n, REF_DBL);
if (dir < 0 || 2 < dir)
RSS(ref_migrate_split_dir(ref_mpi, n, xyz, transform, &dir), "dir");
RAS(-1 < dir && dir < 3, "3D dir");
RSS(ref_migrate_split_ratio(npart, &ratio), "ratio");
ratio_shift = (REF_DBL)(seed % seed_base) / (REF_DBL)seed_base;
ratio0 = ratio * ratio_shift;
ratio1 = 1.0 - (ratio - ratio0);
for (i = 0; i < n; i++) {
REF_DBL transformed[3];
RSS(ref_matrix_ax(3, transform, &(xyz[3 * i]), transformed), "ax");
x[i] = transformed[dir];
}
total = (REF_LONG)n;
RSS(ref_mpi_allsum(ref_mpi, &total, 1, REF_LONG_TYPE), "high_pos");
position = (REF_LONG)((REF_DBL)total * ratio0);
RSS(ref_search_selection(ref_mpi, n, x, position, &value0), "target");
position = (REF_LONG)((REF_DBL)total * ratio1);
RSS(ref_search_selection(ref_mpi, n, x, position, &value1), "target");
ref_malloc(xyz0, 3 * n, REF_DBL);
ref_malloc(xyz1, 3 * n, REF_DBL);
ref_malloc(owners0, n, REF_INT);
ref_malloc(owners1, n, REF_INT);
ref_malloc(locals0, n, REF_INT);
ref_malloc(locals1, n, REF_INT);
n0 = 0;
n1 = 0;
for (i = 0; i < n; i++) {
if (x[i] < value0 || value1 < x[i]) {
for (j = 0; j < 3; j++) xyz0[j + 3 * n0] = xyz[j + 3 * i];
owners0[n0] = owners[i];
locals0[n0] = locals[i];
n0++;
} else {
for (j = 0; j < 3; j++) xyz1[j + 3 * n1] = xyz[j + 3 * i];
owners1[n1] = owners[i];
locals1[n1] = locals[i];
n1++;
}
}
REIS(n, n0 + n1, "conservation");
npart0 = npart / 2;
npart1 = npart - npart0;
offset0 = offset;
offset1 = offset + npart0;
RSS(ref_mpi_balance(ref_mpi, 3, n0, (void *)xyz0, 0, npart0 - 1, &bal_n0,
(void **)(&bal_xyz0), REF_DBL_TYPE),
"split 0");
RSS(ref_mpi_balance(ref_mpi, 3, n1, (void *)xyz1, npart0,
ref_mpi_n(ref_mpi) - 1, &bal_n1, (void **)(&bal_xyz1),
REF_DBL_TYPE),
"split 1");
RSS(ref_mpi_balance(ref_mpi, 1, n0, (void *)owners0, 0, npart0 - 1, &bal_n0,
(void **)(&bal_owners0), REF_INT_TYPE),
"split owner 0");
RSS(ref_mpi_balance(ref_mpi, 1, n1, (void *)owners1, npart0,
ref_mpi_n(ref_mpi) - 1, &bal_n1, (void **)(&bal_owners1),
REF_INT_TYPE),
"split owner 1");
RSS(ref_mpi_balance(ref_mpi, 1, n0, (void *)locals0, 0, npart0 - 1, &bal_n0,
(void **)(&bal_locals0), REF_INT_TYPE),
"split local 0");
RSS(ref_mpi_balance(ref_mpi, 1, n1, (void *)locals1, npart0,
ref_mpi_n(ref_mpi) - 1, &bal_n1, (void **)(&bal_locals1),
REF_INT_TYPE),
"split local 1");
RSS(ref_mpi_front_comm(ref_mpi, &split_mpi, npart0), "split");
if (cycle_dir) {
dir += 1;
if (dir > 2) dir -= 3;
if (twod && dir > 1) dir -= 2; /* twod skips Z */
} else {
dir = -1; /* direction computed in next recursion */
}
if (ref_mpi_rank(ref_mpi) < npart0) {
RSS(ref_migrate_native_rcb_direction(
split_mpi, bal_n0, bal_xyz0, transform, npart0, offset0,
bal_owners0, bal_locals0, global_mpi, part, seed, dir, twod),
"recurse 0");
} else {
RSS(ref_migrate_native_rcb_direction(
split_mpi, bal_n1, bal_xyz1, transform, npart1, offset1,
bal_owners1, bal_locals1, global_mpi, part, seed, dir, twod),
"recurse 1");
}
RSS(ref_mpi_join_comm(split_mpi), "join");
RSS(ref_mpi_free(split_mpi), "new free");
ref_free(bal_locals1);
ref_free(bal_locals0);
ref_free(bal_owners1);
ref_free(bal_owners0);
ref_free(bal_xyz1);
ref_free(bal_xyz0);
ref_free(locals1);
ref_free(locals0);
ref_free(owners1);
ref_free(owners0);
ref_free(xyz1);
ref_free(xyz0);
ref_free(x);
return REF_SUCCESS;
}
static REF_STATUS ref_migrate_native_rcb_part(REF_GRID ref_grid, REF_INT npart,
REF_INT *node_part) {
REF_NODE ref_node = ref_grid_node(ref_grid);
REF_MPI ref_mpi = ref_grid_mpi(ref_grid);
REF_INT node;
REF_INT i, n;
REF_DBL *xyz;
REF_INT offset;
REF_INT *owners;
REF_INT *locals;
REF_DBL transform[] = {1, 0, 0, 0, 1, 0, 0, 0, 1};
for (node = 0; node < ref_node_max(ref_node); node++)
node_part[node] = REF_EMPTY;
offset = 0;
n = ref_node_n(ref_node);
ref_malloc(xyz, 3 * n, REF_DBL);
ref_malloc(owners, n, REF_INT);
ref_malloc(locals, n, REF_INT);
n = 0;
each_ref_node_valid_node(ref_node, node) {
if (ref_node_owned(ref_node, node)) {
for (i = 0; i < 3; i++) xyz[i + 3 * n] = ref_node_xyz(ref_node, i, node);
owners[n] = ref_node_part(ref_node, node);
locals[n] = node;
n++;
}
}
RSS(ref_migrate_native_rcb_direction(
ref_mpi, n, xyz, transform, npart, offset, owners, locals, ref_mpi,
node_part, ref_grid_partitioner_seed(ref_grid), -1,
ref_grid_twod(ref_grid)),
"split");
ref_grid_partitioner_seed(ref_grid)++;
if (ref_grid_partitioner_seed(ref_grid) < 0)
ref_grid_partitioner_seed(ref_grid) = 0; /* overflow int */
ref_free(locals);
ref_free(owners);
ref_free(xyz);
ref_mpi_stopwatch_stop(ref_grid_mpi(ref_grid), "native RCB part");
return REF_SUCCESS;
}
#if defined(HAVE_ZOLTAN) && defined(HAVE_MPI)
static int ref_migrate_zoltan_local_n(void *void_ref_migrate, int *ierr) {
REF_MIGRATE ref_migrate = ((REF_MIGRATE)void_ref_migrate);
int node, n;
*ierr = 0;
n = 0;
each_ref_migrate_node(ref_migrate, node) { n++; }
return n;
}
static void ref_migrate_zoltan_local_ids(void *void_ref_migrate, int global_dim,
int local_dim, ZOLTAN_ID_PTR global,
ZOLTAN_ID_PTR local, int wgt_dim,
float *obj_wgts, int *ierr) {
REF_MIGRATE ref_migrate = ((REF_MIGRATE)void_ref_migrate);
REF_INT node, n;
if (1 != global_dim || 1 != local_dim || 1 != wgt_dim) {
printf("%s: %d: %s: %s\n", __FILE__, __LINE__, __func__, "bad sizes");
*ierr = ZOLTAN_FATAL;
return;
}
*ierr = 0;
n = 0;
each_ref_migrate_node(ref_migrate, node) {
local[n] = (ZOLTAN_ID_TYPE)node;
global[n] = (ZOLTAN_ID_TYPE)ref_migrate_global(ref_migrate, node);
obj_wgts[n] = (float)ref_migrate_weight(ref_migrate, node);
n++;
}
}
static int ref_migrate_zoltan_geom_dimensionality(void *void_ref_migrate,
int *ierr) {
SUPRESS_UNUSED_COMPILER_WARNING(void_ref_migrate);
*ierr = 0;
return 3;
}
static void ref_migrate_zoltan_geom(void *void_ref_migrate, int global_dim,
int local_dim, int nnode,
ZOLTAN_ID_PTR global, ZOLTAN_ID_PTR local,
int xyz_dim, double *xyz, int *ierr) {
REF_MIGRATE ref_migrate = ((REF_MIGRATE)void_ref_migrate);
REF_INT node;
SUPRESS_UNUSED_COMPILER_WARNING(global);
*ierr = 0;
if (1 != global_dim || 1 != local_dim || 3 != xyz_dim) {
printf("%s: %d: %s: %s\n", __FILE__, __LINE__, __func__, "bad sizes");
*ierr = ZOLTAN_FATAL;
return;
}
for (node = 0; node < nnode; node++) {
if (!ref_migrate_valid(ref_migrate, local[node])) {
printf("%s: %d: %s: %d %d invalid\n", __FILE__, __LINE__, __func__, node,
(REF_INT)local[node]);
*ierr = ZOLTAN_FATAL;
return;
}
xyz[0 + 3 * node] = ref_migrate_xyz(ref_migrate, 0, local[node]);
xyz[1 + 3 * node] = ref_migrate_xyz(ref_migrate, 1, local[node]);
xyz[2 + 3 * node] = ref_migrate_xyz(ref_migrate, 2, local[node]);
}
}
static int ref_migrate_zoltan_num_edges(void *void_ref_migrate, int global_dim,
int local_dim, ZOLTAN_ID_PTR global,
ZOLTAN_ID_PTR local, int *ierr) {
REF_MIGRATE ref_migrate = ((REF_MIGRATE)void_ref_migrate);
REF_INT node, degree;
SUPRESS_UNUSED_COMPILER_WARNING(global);
*ierr = 0;
if (1 != global_dim || 1 != local_dim) {
printf("%s: %d: %s: %s\n", __FILE__, __LINE__, __func__, "bad sizes");
*ierr = ZOLTAN_FATAL;
return 0;
}
node = (REF_INT)local[0];
RSS(ref_adj_degree(ref_migrate_conn(ref_migrate), node, °ree), "deg");
return degree;
}
static void ref_migrate_zoltan_edge_list(void *void_ref_migrate, int global_dim,
int local_dim, ZOLTAN_ID_PTR global,
ZOLTAN_ID_PTR local,
ZOLTAN_ID_PTR conn_global,
int *conn_part, int weight_dim,
float *weight, int *ierr) {
REF_MIGRATE ref_migrate = ((REF_MIGRATE)void_ref_migrate);
REF_NODE ref_node = ref_grid_node(ref_migrate_grid(ref_migrate));
REF_INT node, item, ref, degree;
SUPRESS_UNUSED_COMPILER_WARNING(global);
SUPRESS_UNUSED_COMPILER_WARNING(weight);
*ierr = 0;
if (1 != global_dim || 1 != local_dim || 1 != weight_dim) {
printf("%s: %d: %s: %s\n", __FILE__, __LINE__, __func__, "bad sizes");
*ierr = ZOLTAN_FATAL;
return;
}
node = (REF_INT)local[0];
degree = 0;
each_ref_adj_node_item_with_ref(ref_migrate_conn(ref_migrate), node, item,
ref) {
conn_global[degree] = (ZOLTAN_ID_TYPE)ref_node_global(ref_node, ref);
conn_part[degree] = (int)ref_node_part(ref_node, ref);
weight[degree] = (float)ref_migrate_age(ref_migrate, node) +
(float)ref_migrate_age(ref_migrate, ref) + (float)1.0;
degree++;
}
}
REF_STATUS ref_migrate_zoltan_part(REF_GRID ref_grid, REF_INT *node_part) {
REF_MPI ref_mpi = ref_grid_mpi(ref_grid);
REF_NODE ref_node = ref_grid_node(ref_grid);
REF_MIGRATE ref_migrate;
int partitions_have_changed;
int global_id_dimension, local_id_dimension;
int import_n;
ZOLTAN_ID_PTR import_global, import_local;
int *import_proc, *import_part;
int export_n;
ZOLTAN_ID_PTR export_global, export_local;
int *export_proc, *export_part;
float ver;
REF_INT node, item, local, part;
REF_GLOB global;
REF_INT *migrate_part;
REF_INT *a_next;
REF_GLOB *a_parts, *b_parts;
REF_INT *a_size, *b_size;
REF_INT a_total, b_total;
struct Zoltan_Struct *zz;
if (!ref_mpi_para(ref_mpi)) return REF_SUCCESS;
RSS(ref_migrate_create(&ref_migrate, ref_grid), "create migrate");
ref_mpi_stopwatch_stop(ref_grid_mpi(ref_grid), "zoltan init");
if (ref_grid_twod(ref_grid)) {
RSS(ref_migrate_2d_agglomeration(ref_migrate), "2d agglom");
}
{ /* zoltan does not use argc and argv when MPI_Initialized
must be protected */
char **empty_argument = NULL;
if (!ref_mpi_para(ref_mpi))
THROW("Zoltan_Initialize must have actual arguments for seq");
REIS(ZOLTAN_OK, Zoltan_Initialize(0, empty_argument, &ver),
"Zoltan is angry");
}
zz = Zoltan_Create((*((MPI_Comm *)(ref_mpi->comm))));
/* General parameters */
Zoltan_Set_Param(zz, "DEBUG_LEVEL", "0");
Zoltan_Set_Param(zz, "RETURN_LISTS", "PARTS");
Zoltan_Set_Param(zz, "LB_APPROACH", "PARTITION");
switch (ref_grid_partitioner(ref_grid)) {
case REF_MIGRATE_RECOMMENDED:
case REF_MIGRATE_ZOLTAN_GRAPH:
Zoltan_Set_Param(zz, "LB_METHOD", "GRAPH");
break;
case REF_MIGRATE_ZOLTAN_RCB:
Zoltan_Set_Param(zz, "LB_METHOD", "RCB");
break;
default:
RSS(REF_IMPLEMENT, "ref_migrate_method");
break;
}
Zoltan_Set_Param(zz, "OBJ_WEIGHT_DIM", "1");
Zoltan_Set_Param(zz, "EDGE_WEIGHT_DIM", "1");
Zoltan_Set_Num_Obj_Fn(zz, ref_migrate_zoltan_local_n, (void *)ref_migrate);
Zoltan_Set_Obj_List_Fn(zz, ref_migrate_zoltan_local_ids, (void *)ref_migrate);
Zoltan_Set_Num_Geom_Fn(zz, ref_migrate_zoltan_geom_dimensionality,
(void *)ref_migrate);
Zoltan_Set_Geom_Multi_Fn(zz, ref_migrate_zoltan_geom, (void *)ref_migrate);
Zoltan_Set_Num_Edges_Fn(zz, ref_migrate_zoltan_num_edges,
(void *)ref_migrate);
Zoltan_Set_Edge_List_Fn(zz, ref_migrate_zoltan_edge_list,
(void *)ref_migrate);
REIS(ZOLTAN_OK,
Zoltan_LB_Partition(zz, &partitions_have_changed, &global_id_dimension,
&local_id_dimension, &import_n, &import_global,
&import_local, &import_proc, &import_part, &export_n,
&export_global, &export_local, &export_proc,
&export_part),
"Zoltan is angry");
ref_mpi_stopwatch_stop(ref_grid_mpi(ref_grid), "zoltan part");
ref_malloc_init(migrate_part, ref_migrate_max(ref_node), REF_INT, REF_EMPTY);
for (node = 0; node < export_n; node++)
migrate_part[export_local[node]] = export_part[node];
ref_malloc_init(a_size, ref_mpi_n(ref_mpi), REF_INT, 0);
ref_malloc_init(b_size, ref_mpi_n(ref_mpi), REF_INT, 0);
each_ref_migrate_node(ref_migrate, node) {
each_ref_adj_node_item_with_ref(ref_migrate_parent_local(ref_migrate), node,
item, local) {
part = ref_adj_item_ref(ref_migrate_parent_part(ref_migrate), item);
if (ref_mpi_rank(ref_mpi) != part) {
a_size[part]++;
} else {
node_part[local] = migrate_part[node];
}
}
}
RSS(ref_mpi_alltoall(ref_mpi, a_size, b_size, REF_INT_TYPE),
"alltoall sizes");
a_total = 0;
each_ref_mpi_part(ref_mpi, part) a_total += a_size[part];
ref_malloc(a_parts, 2 * a_total, REF_GLOB);
b_total = 0;
each_ref_mpi_part(ref_mpi, part) b_total += b_size[part];
ref_malloc(b_parts, 2 * b_total, REF_GLOB);
ref_malloc(a_next, ref_mpi_n(ref_mpi), REF_INT);
a_next[0] = 0;
each_ref_mpi_worker(ref_mpi, part) {
a_next[part] = a_next[part - 1] + a_size[part - 1];
}
each_ref_migrate_node(ref_migrate, node) {
each_ref_adj_node_item_with_ref(ref_migrate_parent_local(ref_migrate), node,
item, local) {
part = ref_adj_item_ref(ref_migrate_parent_part(ref_migrate), item);
if (ref_mpi_rank(ref_mpi) != part) {
global = ref_migrate_global(ref_migrate, local);
a_parts[0 + 2 * a_next[part]] = global;
a_parts[1 + 2 * a_next[part]] = (REF_GLOB)migrate_part[node];
a_next[part]++;
}
}
}
RSS(ref_mpi_alltoallv(ref_mpi, a_parts, a_size, b_parts, b_size, 2,
REF_GLOB_TYPE),
"alltoallv parts");
for (node = 0; node < b_total; node++) {
global = b_parts[0 + 2 * node];
part = (REF_INT)b_parts[1 + 2 * node];
RSS(ref_node_local(ref_node, global, &local), "g2l");
node_part[local] = part;
}
free(a_next);
free(b_parts);
free(a_parts);
free(b_size);
free(a_size);
ref_free(migrate_part);
REIS(ZOLTAN_OK,
Zoltan_LB_Free_Part(&import_local, &import_global, &import_proc,
&import_part),
"Zoltan is angry");
REIS(ZOLTAN_OK,
Zoltan_LB_Free_Part(&export_local, &export_global, &export_proc,
&export_part),
"Zoltan is angry");
Zoltan_Destroy(&zz);
RSS(ref_migrate_free(ref_migrate), "free migrate");
ref_mpi_stopwatch_stop(ref_grid_mpi(ref_grid), "part update");
return REF_SUCCESS;
}
#endif
#if defined(HAVE_PARMETIS) && defined(HAVE_MPI)
static REF_STATUS ref_migrate_metis_wrapper(PARM_INT n, PARM_INT *xadj,
PARM_INT *adjncy, PARM_INT *adjwgt,
PARM_INT npart, PARM_INT *part) {
PARM_INT ncon;
PARM_INT *vwgt, *vsize, objval;
PARM_REAL *tpwgts, *ubvec;
PARM_INT options[METIS_NOPTIONS];
ncon = 1;
vsize = NULL;
ref_malloc_init(vwgt, ncon * n, PARM_INT, 1);
ref_malloc_init(tpwgts, ncon * npart, PARM_REAL,
(PARM_REAL)1.0 / (PARM_REAL)npart);
ref_malloc_init(ubvec, ncon, PARM_REAL, 1.001);
METIS_SetDefaultOptions(options);
options[METIS_OPTION_NUMBERING] = 0;
options[METIS_OPTION_SEED] = 42;
options[METIS_OPTION_PTYPE] = METIS_PTYPE_RB; /* zero part less likely */
/* options[METIS_OPTION_DBGLVL] = METIS_DBG_COARSEN; */
REIS(METIS_OK,
METIS_PartGraphKway(&n, &ncon, xadj, adjncy, vwgt, vsize, adjwgt, &npart,
tpwgts, ubvec, options, &objval, part),
"METIS is not o.k.");
ref_free(ubvec);
ref_free(tpwgts);
ref_free(vwgt);
return REF_SUCCESS;
}
static REF_STATUS ref_migrate_metis_subset(
REF_MPI ref_mpi, PARM_INT npart, PARM_INT *vtxdist, PARM_INT *xadjdist,
PARM_INT *adjncydist, PARM_INT *adjwgtdist, PARM_INT *partdist) {
REF_INT *count;
PARM_INT global;
PARM_INT n, *xadj, *adjncy, *adjwgt, *part;
REF_INT i, proc;
REF_TYPE parm_type;
RSS(ref_mpi_int_size_type(sizeof(PARM_INT), &parm_type), "calc parm_type");
n = vtxdist[ref_mpi_n(ref_mpi)];
ref_malloc_init(count, ref_mpi_n(ref_mpi), REF_INT, REF_EMPTY);
ref_malloc_init(xadj, n + 1, PARM_INT, REF_EMPTY);
each_ref_mpi_part(ref_mpi, proc) {
count[proc] = (REF_INT)(vtxdist[proc + 1] - vtxdist[proc]);
}
RSS(ref_mpi_allgatherv(ref_mpi, &(xadjdist[1]), count, &(xadj[1]), parm_type),
"gather adj");
xadj[0] = 0;
each_ref_mpi_part(ref_mpi, proc) {
for (global = vtxdist[proc] + 1; global <= vtxdist[proc + 1]; global++) {
xadj[global] += xadj[vtxdist[proc]];
}
}
ref_malloc_init(adjncy, xadj[n], PARM_INT, REF_EMPTY);
ref_malloc_init(adjwgt, xadj[n], PARM_INT, REF_EMPTY);
each_ref_mpi_part(ref_mpi, proc) {
count[proc] = (REF_INT)(xadj[vtxdist[proc + 1]] - xadj[vtxdist[proc]]);
}
RSS(ref_mpi_allgatherv(ref_mpi, adjncydist, count, adjncy, parm_type),
"gather adjncy");
RSS(ref_mpi_allgatherv(ref_mpi, adjwgtdist, count, adjwgt, parm_type),
"gather adjwgt");
ref_mpi_stopwatch_stop(ref_mpi, "metis gather");
ref_malloc_init(part, n, PARM_INT, REF_EMPTY);
if (ref_mpi_once(ref_mpi)) {
RSS(ref_migrate_metis_wrapper(n, xadj, adjncy, adjwgt, npart, part),
"metis wrap");
}
each_ref_mpi_part(ref_mpi, proc) {
count[proc] = (REF_INT)(vtxdist[proc + 1] - vtxdist[proc]);
}
if (ref_mpi_once(ref_mpi)) {
for (i = 0; i < vtxdist[1]; i++) {
partdist[i] = part[i];
}
each_ref_mpi_worker(ref_mpi, proc) {
RSS(ref_mpi_scatter_send(ref_mpi, &(part[vtxdist[proc]]), count[proc],
parm_type, proc),
"send part");
}
} else {
proc = ref_mpi_rank(ref_mpi);
RSS(ref_mpi_scatter_recv(ref_mpi, partdist, count[proc], parm_type),
"recv part");
}
ref_free(part);
ref_free(adjwgt);
ref_free(adjncy);
ref_free(xadj);
ref_free(count);
return REF_SUCCESS;
}
static REF_STATUS ref_migrate_parmetis_wrapper(
REF_MPI ref_mpi, PARM_INT npart, PARM_INT *vtxdist, PARM_INT *xadjdist,
PARM_INT *adjncydist, PARM_INT *adjwgtdist, PARM_INT *partdist) {
PARM_INT *vwgt;
PARM_REAL *tpwgts, *ubvec;
PARM_INT wgtflag = 3;
PARM_INT numflag = 0;
PARM_INT ncon;
PARM_INT edgecut;
PARM_INT options[] = {1, 0 /* PARMETIS_DBGLVL_PROGRESS */, 42};
MPI_Comm comm = (*((MPI_Comm *)(ref_mpi->comm)));
REF_INT n, proc;
proc = ref_mpi_rank(ref_mpi);
n = (REF_INT)(vtxdist[proc + 1] - vtxdist[proc]);
ncon = 1;
ref_malloc_init(vwgt, ncon * n, PARM_INT, 1);
ref_malloc_init(tpwgts, ncon * npart, PARM_REAL,
(PARM_REAL)1.0 / (PARM_REAL)npart);
ref_malloc_init(ubvec, ncon, PARM_REAL, 1.01);