void read_file(FILE * inputfile){ char * line; int block_ended = 1, line_count = 0, total_lines = 0, i = 1, j; float next_perc; unsigned int next_article_id = 0, next_author_id = 0; article * temp_article = NULL; author * temp_author; list_node * temp_author_node; graph_node * temp_gnode = NULL; line = (char *) malloc(MAX_LINE_LENGTH*sizeof(char)); while(fgets(line, MAX_LINE_LENGTH, inputfile) != NULL) ++total_lines; rewind(inputfile); line = fgets(line, MAX_LINE_LENGTH, inputfile); ++line_count; while(line_is_blank(line)){ /*remove leading white lines*/ line = fgets(line, MAX_LINE_LENGTH, inputfile); ++line_count; } printf("Creating article graph: "); fflush(stdout); while(line != NULL){ next_perc = (float) line_count / (float) total_lines; if(next_perc > ((float) i /10.0)){ printf("%d%%...",10*i); fflush(stdout); ++i; } if(block_ended && !line_is_blank(line)){ /*a new article/authors block begins*/ remove_ending_newline(line); block_ended = 0; temp_article = new_article(line, next_article_id); temp_gnode = new_graph_node(temp_article, article_node); ++next_article_id; } else { if(line_is_blank(line)){ /*we have just terminated processing an article/authors block */ if(!block_ended){ block_ended = 1; add_node_to_graph(temp_gnode, artcl_graph); } } else{ /*there's a new author for the current article/authors block*/ remove_ending_newline(line); if((temp_author_node = search_in_hash(line, authors_dict)) == NULL){ temp_author = new_author(line, next_author_id); ++next_author_id; insert_in_hash(temp_author, author_node, authors_dict); } else{ temp_author = (author *) temp_author_node->key; /*properly update the article's edges in the graph*/ for(j=0;j<temp_author->n_articles; ++j){ if(temp_author->articles_id[j] < artcl_graph->n_nodes){ /*if there is the same author repeated twice we would be asking for an article id not yet in the graph*/ add_edge(temp_gnode, artcl_graph->nodes[temp_author->articles_id[j]]); /*add edge or increase its weight*/ } } } add_article_to_author(temp_article, temp_author); add_author_to_article(temp_author, temp_article); } } line = fgets(line, MAX_LINE_LENGTH, inputfile); ++line_count; } free(line); }
void migrate_pre_process(void *data, int num_gid_entries, int num_lid_entries, int num_import, ZOLTAN_ID_PTR import_global_ids, ZOLTAN_ID_PTR import_local_ids, int *import_procs, int *import_to_part, int num_export, ZOLTAN_ID_PTR export_global_ids, ZOLTAN_ID_PTR export_local_ids, int *export_procs, int *export_to_part, int *ierr) { int i, j, k, idx, maxlen, proc, offset; int *proc_ids = NULL; /* Temp array of processor assignments for elements.*/ char *change = NULL; /* Temp array indicating whether local element's adj list must be updated due to a nbor's migration. */ int new_proc; /* New processor assignment for nbor element. */ int exp_elem; /* index of an element being exported */ int bor_elem; /* index of an element along the processor border */ int *send_vec = NULL, *recv_vec = NULL; /* Communication vecs. */ MESH_INFO_PTR mesh; ELEM_INFO_PTR elements; int lid = num_lid_entries-1; int gid = num_gid_entries-1; char msg[256]; *ierr = ZOLTAN_OK; if (data == NULL) { *ierr = ZOLTAN_FATAL; return; } mesh = (MESH_INFO_PTR) data; elements = mesh->elements; for (i=0; i < mesh->num_elems; i++) { /* don't migrate a pointer created on this process */ safe_free((void **)(void *)&(elements[i].adj_blank)); } /* * Set some flags. Assume if true for one element, true for all elements. * Note that some procs may have no elements. */ if (elements[0].edge_wgt != NULL) k = 1; else k = 0; /* Make sure all procs have the same value */ MPI_Allreduce(&k, &Use_Edge_Wgts, 1, MPI_INT, MPI_MAX, MPI_COMM_WORLD); /* NOT IMPLEMENTED: blanking information is not sent along. Subsequent lb_eval may be incorrect, since imported elements may have blanked adjacencies. if (mesh->blank_count > 0) k = 1; else k = 0; MPI_Allreduce(&k, &Vertex_Blanking, 1, MPI_INT, MPI_MAX, MPI_COMM_WORLD); */ /* * For all elements, update adjacent elements' processor information. * That way, when perform migration, will be migrating updated adjacency * information. */ MPI_Comm_rank(MPI_COMM_WORLD, &proc); /* * Build New_Elem_Index array and list of processor assignments. */ New_Elem_Index_Size = mesh->num_elems + num_import - num_export; if (mesh->elem_array_len > New_Elem_Index_Size) New_Elem_Index_Size = mesh->elem_array_len; New_Elem_Index = (int *) malloc(New_Elem_Index_Size * sizeof(int)); New_Elem_Hash_Table = (int *) malloc(New_Elem_Index_Size * sizeof(int)); New_Elem_Hash_Nodes = (struct New_Elem_Hash_Node *) malloc(New_Elem_Index_Size * sizeof(struct New_Elem_Hash_Node)); if (New_Elem_Index == NULL || New_Elem_Hash_Table == NULL || New_Elem_Hash_Nodes == NULL) { Gen_Error(0, "fatal: insufficient memory"); *ierr = ZOLTAN_MEMERR; return; } for (i = 0; i < New_Elem_Index_Size; i++) New_Elem_Hash_Table[i] = -1; for (i = 0; i < New_Elem_Index_Size; i++) { New_Elem_Hash_Nodes[i].globalID = -1; New_Elem_Hash_Nodes[i].localID = -1; New_Elem_Hash_Nodes[i].next = -1; } if (mesh->num_elems > 0) { proc_ids = (int *) malloc(mesh->num_elems * sizeof(int)); change = (char *) malloc(mesh->num_elems * sizeof(char)); if (New_Elem_Index == NULL || proc_ids == NULL || change == NULL || New_Elem_Hash_Table == NULL || New_Elem_Hash_Nodes == NULL) { Gen_Error(0, "fatal: insufficient memory"); *ierr = ZOLTAN_MEMERR; return; } for (i = 0; i < mesh->num_elems; i++) { New_Elem_Index[i] = elements[i].globalID; insert_in_hash(elements[i].globalID, i); proc_ids[i] = proc; change[i] = 0; } } for (i = mesh->num_elems; i < New_Elem_Index_Size; i++) { New_Elem_Index[i] = -1; } for (i = 0; i < num_export; i++) { if (num_lid_entries) exp_elem = export_local_ids[lid+i*num_lid_entries]; else /* testing num_lid_entries == 0 */ search_by_global_id(mesh, export_global_ids[gid+i*num_gid_entries], &exp_elem); if (export_procs[i] != proc) { /* Export is moving to a new processor */ New_Elem_Index[exp_elem] = -1; remove_from_hash(export_global_ids[gid+i*num_gid_entries]); proc_ids[exp_elem] = export_procs[i]; } } j = 0; for (i = 0; i < num_import; i++) { if (import_procs[i] != proc) { /* Import is moving from a new processor, not just from a new partition */ /* search for first free location */ for ( ; j < New_Elem_Index_Size; j++) if (New_Elem_Index[j] == -1) break; New_Elem_Index[j] = import_global_ids[gid+i*num_gid_entries]; insert_in_hash((int) import_global_ids[gid+i*num_gid_entries], j); } } /* * Update local information */ /* Set change flag for elements whose adjacent elements are being exported */ for (i = 0; i < num_export; i++) { if (num_lid_entries) exp_elem = export_local_ids[lid+i*num_lid_entries]; else /* testing num_lid_entries == 0 */ search_by_global_id(mesh, export_global_ids[gid+i*num_gid_entries], &exp_elem); elements[exp_elem].my_part = export_to_part[i]; if (export_procs[i] == proc) continue; /* No adjacency changes needed if export is changing only partition, not processor. */ for (j = 0; j < elements[exp_elem].adj_len; j++) { /* Skip NULL adjacencies (sides that are not adjacent to another elem). */ if (elements[exp_elem].adj[j] == -1) continue; /* Set change flag for adjacent local elements. */ if (elements[exp_elem].adj_proc[j] == proc) { change[elements[exp_elem].adj[j]] = 1; } } } /* Change adjacency information in marked elements */ for (i = 0; i < mesh->num_elems; i++) { if (change[i] == 0) continue; /* loop over marked element's adjacencies; look for ones that are moving */ for (j = 0; j < elements[i].adj_len; j++) { /* Skip NULL adjacencies (sides that are not adjacent to another elem). */ if (elements[i].adj[j] == -1) continue; if (elements[i].adj_proc[j] == proc) { /* adjacent element is local; check whether it is moving. */ if ((new_proc = proc_ids[elements[i].adj[j]]) != proc) { /* Adjacent element is being exported; update this adjacency entry */ elements[i].adj[j] = elements[elements[i].adj[j]].globalID; elements[i].adj_proc[j] = new_proc; } } } } safe_free((void **)(void *) &change); /* * Update off-processor information */ maxlen = 0; for (i = 0; i < mesh->necmap; i++) maxlen += mesh->ecmap_cnt[i]; if (maxlen > 0) { send_vec = (int *) malloc(maxlen * sizeof(int)); if (send_vec == NULL) { Gen_Error(0, "fatal: insufficient memory"); *ierr = ZOLTAN_MEMERR; return; } /* Load send vector */ for (i = 0; i < maxlen; i++) send_vec[i] = proc_ids[mesh->ecmap_elemids[i]]; } safe_free((void **)(void *) &proc_ids); if (maxlen > 0) recv_vec = (int *) malloc(maxlen * sizeof(int)); /* Perform boundary exchange */ boundary_exchange(mesh, 1, send_vec, recv_vec); /* Unload receive vector */ offset = 0; for (i = 0; i < mesh->necmap; i++) { for (j = 0; j < mesh->ecmap_cnt[i]; j++, offset++) { if (recv_vec[offset] == mesh->ecmap_id[i]) { /* off-processor element is not changing processors. */ /* no changes are needed in the local data structure. */ continue; } /* Change processor assignment in local element's adjacency list */ bor_elem = mesh->ecmap_elemids[offset]; for (k = 0; k < elements[bor_elem].adj_len; k++) { /* Skip NULL adjacencies (sides that are not adj to another elem). */ if (elements[bor_elem].adj[k] == -1) continue; if (elements[bor_elem].adj[k] == mesh->ecmap_neighids[offset] && elements[bor_elem].adj_proc[k] == mesh->ecmap_id[i]) { elements[bor_elem].adj_proc[k] = recv_vec[offset]; if (recv_vec[offset] == proc) { /* element is moving to this processor; */ /* convert adj from global to local ID. */ idx = find_in_hash(mesh->ecmap_neighids[offset]); if (idx >= 0) idx = New_Elem_Hash_Nodes[idx].localID; else { sprintf(msg, "fatal: unable to locate element %d in " "New_Elem_Index", mesh->ecmap_neighids[offset]); Gen_Error(0, msg); *ierr = ZOLTAN_FATAL; return; } elements[bor_elem].adj[k] = idx; } break; /* from k loop */ } } } } safe_free((void **)(void *) &recv_vec); safe_free((void **)(void *) &send_vec); /* * Allocate space (if needed) for the new element data. */ if (mesh->elem_array_len < New_Elem_Index_Size) { mesh->elem_array_len = New_Elem_Index_Size; mesh->elements = (ELEM_INFO_PTR) realloc (mesh->elements, mesh->elem_array_len * sizeof(ELEM_INFO)); if (mesh->elements == NULL) { Gen_Error(0, "fatal: insufficient memory"); return; } /* initialize the new spots */ for (i = mesh->num_elems; i < mesh->elem_array_len; i++) initialize_element(&(mesh->elements[i])); } }