1 /* Copyright (c) 2009, 2010. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "simdag/simdag.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_dotparse, sd, "Parsing DOT files");
17 #include <graphviz/agraph.h>
20 #include <graphviz/graph.h>
23 #include <graphviz/cgraph.h>
28 void dot_add_task(Agnode_t * dag_node);
29 void dot_add_input_dependencies(SD_task_t current_job, Agedge_t * edge);
30 void dot_add_output_dependencies(SD_task_t current_job, Agedge_t * edge);
31 xbt_dynar_t SD_dotload_FILE(FILE * in_file);
33 static double dot_parse_double(const char *string)
40 ret = sscanf(string, "%lg", &value);
42 WARN1("%s is not a double", string);
46 static int dot_parse_int(const char *string)
53 ret = sscanf(string, "%d", &value);
55 WARN1("%s is not an integer", string);
59 static xbt_dynar_t result;
60 static xbt_dict_t jobs;
61 static xbt_dict_t files;
62 static SD_task_t root_task, end_task;
63 static Agraph_t *dag_dot;
65 static void dump_res()
69 xbt_dynar_foreach(result, cursor, task) {
70 INFO1("Task %d", cursor);
75 static void dot_task_free(void *task)
81 static void TRACE_sd_dotloader (SD_task_t task, const char *category)
84 if (strlen (category) != 0){
85 TRACE_category (category);
86 TRACE_sd_set_task_category (task, category);
91 /** @brief loads a DOT file describing a DAG
93 * See http://www.graphviz.org/doc/info/lang.html
95 * To obtain information about transfers and tasks, two attributes are
96 * required : size on task (execution time in Flop) and size on edge
97 * (the amount of data transfer in bit).
98 * if they aren't here, there choose to be equal to zero.
100 xbt_dynar_t SD_dotload(const char *filename)
102 FILE *in_file = fopen(filename, "r");
103 xbt_assert1(in_file, "Unable to open \"%s\"\n", filename);
104 SD_dotload_FILE(in_file);
109 xbt_dynar_t SD_dotload_FILE(FILE * in_file)
111 xbt_assert0(in_file, "Unable to use a null file descriptor\n");
112 dag_dot = agread(in_file, NIL(Agdisc_t *));
114 result = xbt_dynar_new(sizeof(SD_task_t), dot_task_free);
115 files = xbt_dict_new();
116 jobs = xbt_dict_new();
117 root_task = SD_task_create_comp_seq("root", NULL, 0);
118 /* by design the root task is always SCHEDULABLE */
119 __SD_task_set_state(root_task, SD_SCHEDULABLE);
121 xbt_dict_set(jobs, "root", root_task, NULL);
122 xbt_dynar_push(result, &root_task);
123 end_task = SD_task_create_comp_seq("end", NULL, 0);
124 xbt_dict_set(jobs, "end", end_task, NULL);
126 Agnode_t *dag_node = NULL;
127 for (dag_node = agfstnode(dag_dot); dag_node;
129 dag_node = agnxtnode(dag_dot, dag_node)) {
132 dag_node = agnxtnode(dag_node)) {
134 dot_add_task(dag_node);
137 xbt_dict_free(&jobs);
139 /* And now, post-process the files.
140 * We want a file task per pair of computation tasks exchanging the file. Duplicate on need
141 * Files not produced in the system are said to be produced by root task (top of DAG).
142 * Files not consumed in the system are said to be consumed by end task (bottom of DAG).
144 xbt_dict_cursor_t cursor;
147 xbt_dict_foreach(files, cursor, name, file) {
148 unsigned int cpt1, cpt2;
149 SD_task_t newfile = NULL;
150 SD_dependency_t depbefore, depafter;
151 if (xbt_dynar_length(file->tasks_before) == 0) {
152 xbt_dynar_foreach(file->tasks_after, cpt2, depafter) {
154 SD_task_create_comm_e2e(file->name, NULL, file->amount);
155 SD_task_dependency_add(NULL, NULL, root_task, newfile);
156 SD_task_dependency_add(NULL, NULL, newfile, depafter->dst);
157 xbt_dynar_push(result, &newfile);
159 } else if (xbt_dynar_length(file->tasks_after) == 0) {
160 xbt_dynar_foreach(file->tasks_before, cpt2, depbefore) {
162 SD_task_create_comm_e2e(file->name, NULL, file->amount);
163 SD_task_dependency_add(NULL, NULL, depbefore->src, newfile);
164 SD_task_dependency_add(NULL, NULL, newfile, end_task);
165 xbt_dynar_push(result, &newfile);
168 xbt_dynar_foreach(file->tasks_before, cpt1, depbefore) {
169 xbt_dynar_foreach(file->tasks_after, cpt2, depafter) {
170 if (depbefore->src == depafter->dst) {
172 ("File %s is produced and consumed by task %s. This loop dependency will prevent the execution of the task.",
173 file->name, depbefore->src->name);
176 SD_task_create_comm_e2e(file->name, NULL, file->amount);
177 SD_task_dependency_add(NULL, NULL, depbefore->src, newfile);
178 SD_task_dependency_add(NULL, NULL, newfile, depafter->dst);
179 xbt_dynar_push(result, &newfile);
185 /* Push end task last */
186 xbt_dynar_push(result, &end_task);
188 /* Free previous copy of the files */
189 xbt_dict_free(&files);
194 /* dot_add_task create a sd_task and all transfers required for this
195 * task. The execution time of the task is given by the attribute size.
196 * The unit of size is the Flop.*/
197 void dot_add_task(Agnode_t * dag_node)
199 char *name = agnameof(dag_node);
200 SD_task_t current_job;
201 double runtime = dot_parse_double(agget(dag_node, (char *) "size"));
203 (long) dot_parse_int((char *) agget(dag_node, (char *) "performer"));
204 INFO3("See <job id=%s runtime=%s %.0f>", name,
205 agget(dag_node, (char *) "size"), runtime);
206 current_job = xbt_dict_get_or_null(jobs, name);
207 if (current_job == NULL) {
209 SD_task_create_comp_seq(name, (void *) performer, runtime);
211 TRACE_sd_dotloader (current_job, agget (dag_node, (char*)"category"));
213 xbt_dict_set(jobs, name, current_job, NULL);
214 xbt_dynar_push(result, ¤t_job);
220 for (e = agfstin(dag_dot, dag_node); e; e = agnxtin(dag_dot, e)) {
223 for (e = agfstin(dag_node); e; e = agnxtin(e)) {
225 dot_add_input_dependencies(current_job, e);
228 if (count == 0 && current_job != root_task) {
229 SD_task_dependency_add(NULL, NULL, root_task, current_job);
233 for (e = agfstout(dag_dot, dag_node); e; e = agnxtout(dag_dot, e)) {
236 for (e = agfstout(dag_node); e; e = agnxtout(e)) {
239 dot_add_output_dependencies(current_job, e);
242 if (count == 0 && current_job != end_task) {
243 SD_task_dependency_add(NULL, NULL, current_job, end_task);
247 /* dot_add_output_dependencies create the dependencies between a task
248 * and a transfers. This is given by the edges in the dot file.
249 * The amount of data transfers is given by the attribute size on the
251 void dot_add_input_dependencies(SD_task_t current_job, Agedge_t * edge)
256 sprintf(name, "%s->%s", agnameof(agtail(edge)), agnameof(aghead(edge)));
257 double size = dot_parse_double(agget(edge, (char *) "size"));
258 INFO2("size : %e, get size : %s", size, agget(edge, (char *) "size"));
259 //int sender = dot_parse_int(agget(edge,(char*)"sender"));
260 //int reciever = dot_parse_int(agget(edge,(char*)"reciever"));
262 file = xbt_dict_get_or_null(files, name);
264 file = SD_task_create_comm_e2e(name, NULL, size);
266 TRACE_sd_dotloader (file, agget (edge, (char*)"category"));
268 xbt_dict_set(files, name, file, &dot_task_free);
270 if (SD_task_get_amount(file) != size) {
271 WARN3("Ignoring file %s size redefinition from %.0f to %.0f",
272 name, SD_task_get_amount(file), size);
275 SD_task_dependency_add(NULL, NULL, file, current_job);
277 file = xbt_dict_get_or_null(jobs, agnameof(agtail(edge)));
279 SD_task_dependency_add(NULL, NULL, file, current_job);
284 /* dot_add_output_dependencies create the dependencies between a
285 * transfers and a task. This is given by the edges in the dot file.
286 * The amount of data transfers is given by the attribute size on the
288 void dot_add_output_dependencies(SD_task_t current_job, Agedge_t * edge)
292 sprintf(name, "%s->%s", agnameof(agtail(edge)), agnameof(aghead(edge)));
293 double size = dot_parse_double(agget(edge, (char *) "size"));
294 INFO2("size : %e, get size : %s", size, agget(edge, (char *) "size"));
295 //int sender = dot_parse_int(agget(edge,(char*)"sender"));
296 //int reciever = dot_parse_int(agget(edge,(char*)"reciever"));
298 //INFO2("See <uses file=%s %s>",A_dot__uses_file,(is_input?"in":"out"));
300 file = xbt_dict_get_or_null(files, name);
302 file = SD_task_create_comm_e2e(name, NULL, size);
304 TRACE_sd_dotloader (file, agget (edge, (char*)"category"));
306 xbt_dict_set(files, name, file, &dot_task_free);
308 if (SD_task_get_amount(file) != size) {
309 WARN3("Ignoring file %s size redefinition from %.0f to %.0f",
310 name, SD_task_get_amount(file), size);
313 SD_task_dependency_add(NULL, NULL, current_job, file);
314 if (xbt_dynar_length(file->tasks_before) > 1) {
315 WARN1("File %s created at more than one location...", file->name);
318 file = xbt_dict_get_or_null(jobs, agnameof(aghead(edge)));
320 SD_task_dependency_add(NULL, NULL, current_job, file);