src/simdag/sd_dotloader.c

   1 /* Copyright (c) 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   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. */
   6
   7 #include "private.h"
   8 #include "simdag/simdag.h"
   9 #include "xbt/misc.h"
  10 #include "xbt/log.h"
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_dotparse, sd,"Parsing DOT files");
  13
  14 #undef CLEANUP
  15 #include <graphviz/cgraph.h>
  16
  17 static double parse_double(const char *string) {
  18         if (string == NULL) return -10;
  19         int ret = 0;
  20         double value;
  21
  22         ret = sscanf(string, "%lg", &value);
  23         if (ret != 1)
  24                 WARN1("%s is not a double", string);
  25         return value;
  26 }
  27 static int parse_int(const char *string) {
  28         if (string == NULL) return -10;
  29         int ret = 0;
  30         int value;
  31
  32         ret = sscanf(string, "%d", &value);
  33         if (ret != 1)
  34                 WARN1("%s is not an integer", string);
  35         return value;
  36 }
  37
  38 static xbt_dynar_t result;
  39 static xbt_dict_t jobs;
  40 static xbt_dict_t files;
  41 static SD_task_t root_task,end_task;
  42 static Agraph_t * dag_dot;
  43
  44 static void dump_res() {
  45         unsigned int cursor;
  46         SD_task_t task;
  47         xbt_dynar_foreach(result,cursor,task) {
  48                 INFO1("Task %d",cursor);
  49                 SD_task_dump(task);
  50         }
  51 }
  52
  53 static void dot_task_free(void*task){
  54         SD_task_t t=task;
  55         SD_task_destroy(t);
  56 }
  57 void Start_dot_job(Agnode_t *dag_node) ;
  58 void input_edge(SD_task_t current_job, Agedge_t *edge) ;
  59 void output_edge(SD_task_t current_job, Agedge_t *edge) ;
  60
  61 /** @brief loads a DAX file describing a DAG
  62  *
  63  * See https://confluence.pegasus.isi.edu/display/pegasus/WorkflowGenerator
  64  * for more details.
  65  */
  66 xbt_dynar_t SD_dotload(const char*filename){
  67         FILE* in_file = fopen(filename,"r");
  68         xbt_assert1(in_file, "Unable to open \"%s\"\n", filename);
  69         SD_dotload_FILE(in_file);
  70         fclose(in_file);
  71         return result;
  72 }
  73
  74 xbt_dynar_t SD_dotload_FILE(FILE* in_file){
  75         xbt_assert0(in_file, "Unable to use a null file descriptor\n");
  76         dag_dot = agread(in_file,NIL(Agdisc_t*));
  77
  78         result = xbt_dynar_new(sizeof(SD_task_t),dot_task_free);
  79         files=xbt_dict_new();
  80         jobs=xbt_dict_new();
  81         root_task = SD_task_create_comp_seq("root",NULL,0);
  82         /* by design the root task is always SCHEDULABLE */
  83         __SD_task_set_state(root_task, SD_SCHEDULABLE);
  84
  85         xbt_dynar_push(result,&root_task);
  86         end_task = SD_task_create_comp_seq("end",NULL,0);
  87
  88         Agnode_t *dag_node   = NULL;
  89         SD_task_t  task_node  = NULL;
  90         for (dag_node = agfstnode(dag_dot); dag_node; dag_node = agnxtnode(dag_dot,dag_node)){
  91                 Start_dot_job(dag_node);
  92         }
  93         agclose(dag_dot);
  94         xbt_dict_free(&jobs);
  95
  96         /* And now, post-process the files.
  97          * We want a file task per pair of computation tasks exchanging the file. Duplicate on need
  98          * Files not produced in the system are said to be produced by root task (top of DAG).
  99          * Files not consumed in the system are said to be consumed by end task (bottom of DAG).
 100          */
 101         xbt_dict_cursor_t cursor;
 102         SD_task_t file;
 103         char *name;
 104         xbt_dict_foreach(files,cursor,name,file) {
 105                 unsigned int cpt1,cpt2;
 106                 SD_task_t newfile = NULL;
 107                 SD_dependency_t depbefore,depafter;
 108                 if (xbt_dynar_length(file->tasks_before) == 0) {
 109                         xbt_dynar_foreach(file->tasks_after,cpt2,depafter) {
 110                                 SD_task_t newfile = SD_task_create_comm_e2e(file->name,NULL,file->amount);
 111                                 SD_task_dependency_add(NULL,NULL,root_task,newfile);
 112                                 SD_task_dependency_add(NULL,NULL,newfile,depafter->dst);
 113                                 xbt_dynar_push(result,&newfile);
 114                         }
 115                 } else if (xbt_dynar_length(file->tasks_after) == 0) {
 116                         xbt_dynar_foreach(file->tasks_before,cpt2,depbefore) {
 117                                 SD_task_t newfile = SD_task_create_comm_e2e(file->name,NULL,file->amount);
 118                                 SD_task_dependency_add(NULL,NULL,depbefore->src,newfile);
 119                                 SD_task_dependency_add(NULL,NULL,newfile,end_task);
 120                                 xbt_dynar_push(result,&newfile);
 121                         }
 122                 } else {
 123                         xbt_dynar_foreach(file->tasks_before,cpt1,depbefore) {
 124                                 xbt_dynar_foreach(file->tasks_after,cpt2,depafter) {
 125                                         if (depbefore->src == depafter->dst) {
 126                                                 WARN2("File %s is produced and consumed by task %s. This loop dependency will prevent the execution of the task.",
 127                                                                 file->name,depbefore->src->name);
 128                                         }
 129                                         newfile = SD_task_create_comm_e2e(file->name,NULL,file->amount);
 130                                         SD_task_dependency_add(NULL,NULL,depbefore->src,newfile);
 131                                         SD_task_dependency_add(NULL,NULL,newfile,depafter->dst);
 132                                         xbt_dynar_push(result,&newfile);
 133                                 }
 134                         }
 135                 }
 136         }
 137
 138         /* Push end task last */
 139         xbt_dynar_push(result,&end_task);
 140
 141         /* Free previous copy of the files */
 142         xbt_dict_free(&files);
 143
 144         //INFO2("result : %lld, dot : %lld",result,*dot);
 145         return result;
 146 }
 147
 148 void Start_dot_job(Agnode_t *dag_node) {
 149         char *name = agnameof(dag_node);
 150         double runtime = parse_double(agget(dag_node,"size"));
 151         int performer = parse_int(agget(dag_node,"performer"));
 152         INFO3("See <job id=%s runtime=%s %.0f>",name,agget(dag_node,"size"),runtime);
 153         SD_task_t current_job = SD_task_create_comp_seq(name,(void*)performer,runtime);
 154         xbt_dict_set(jobs,name,current_job,NULL);
 155         xbt_dynar_push(result,&current_job);
 156         Agedge_t    *e;
 157         int count = 0;
 158         for (e = agfstin(dag_dot,dag_node); e; e = agnxtin(dag_dot,e)) {
 159                 input_edge(current_job,e);
 160                 count++;
 161         }
 162         if (count==0){
 163                 SD_task_t file;
 164                 char *name="root->many";
 165                 double size = 0;
 166
 167                 file = xbt_dict_get_or_null(files,name);
 168                 if (file==NULL) {
 169                         file = SD_task_create_comm_e2e(name,NULL,size);
 170                         xbt_dict_set(files,name,file,&dot_task_free);
 171                 } else {
 172                         if (SD_task_get_amount(file)!=size) {
 173                                 WARN3("Ignoring file %s size redefinition from %.0f to %.0f",
 174                                                 name,SD_task_get_amount(file),size);
 175                         }
 176                 }
 177                 SD_task_dependency_add(NULL,NULL,file,current_job);
 178         }
 179         count = 0;
 180         for (e = agfstout(dag_dot,dag_node); e; e = agnxtout(dag_dot,e)) {
 181                 output_edge(current_job,e);
 182                 count++;
 183         }
 184         if (count==0){
 185                 SD_task_t file;
 186                 char *name = "many->end";
 187                 double size = 0;
 188
 189                 //  INFO2("See <uses file=%s %s>",A_dot__uses_file,(is_input?"in":"out"));
 190                 file = xbt_dict_get_or_null(files,name);
 191                 if (file==NULL) {
 192                         file = SD_task_create_comm_e2e(name,NULL,size);
 193                         xbt_dict_set(files,name,file,&dot_task_free);
 194                 } else {
 195                         if (SD_task_get_amount(file)!=size) {
 196                                 WARN3("Ignoring file %s size redefinition from %.0f to %.0f",
 197                                                 name,SD_task_get_amount(file),size);
 198                         }
 199                 }
 200                 SD_task_dependency_add(NULL,NULL,current_job,file);
 201                 if (xbt_dynar_length(file->tasks_before)>1) {
 202                         WARN1("File %s created at more than one location...",file->name);
 203                 }
 204         }
 205 }
 206
 207 void input_edge(SD_task_t current_job, Agedge_t *edge) {
 208         SD_task_t file;
 209
 210         char name[80];
 211         sprintf(name ,"%s->%s",agnameof(agtail(edge)) ,agnameof(aghead(edge)));
 212         double size = parse_double(agget(edge,"size"));
 213         int sender = parse_int(agget(edge,"sender"));
 214         int reciever = parse_int(agget(edge,"reciever"));
 215
 216         file = xbt_dict_get_or_null(files,name);
 217         if (file==NULL) {
 218                 file = SD_task_create_comm_e2e(name,NULL,size);
 219                 xbt_dict_set(files,name,file,&dot_task_free);
 220         } else {
 221                 if (SD_task_get_amount(file)!=size) {
 222                         WARN3("Ignoring file %s size redefinition from %.0f to %.0f",
 223                                         name,SD_task_get_amount(file),size);
 224                 }
 225         }
 226         SD_task_dependency_add(NULL,NULL,file,current_job);
 227 }
 228
 229 void output_edge(SD_task_t current_job, Agedge_t *edge) {
 230         SD_task_t file;
 231         char name[80];
 232         sprintf(name ,"%s->%s",agnameof(agtail(edge)) ,agnameof(aghead(edge)));
 233         double size = parse_double(agget(edge,"size"));
 234         int sender = parse_int(agget(edge,"sender"));
 235         int reciever = parse_int(agget(edge,"reciever"));
 236
 237         //  INFO2("See <uses file=%s %s>",A_dot__uses_file,(is_input?"in":"out"));
 238         file = xbt_dict_get_or_null(files,name);
 239         if (file==NULL) {
 240                 file = SD_task_create_comm_e2e(name,NULL,size);
 241                 xbt_dict_set(files,name,file,&dot_task_free);
 242         } else {
 243                 if (SD_task_get_amount(file)!=size) {
 244                         WARN3("Ignoring file %s size redefinition from %.0f to %.0f",
 245                                         name,SD_task_get_amount(file),size);
 246                 }
 247         }
 248         SD_task_dependency_add(NULL,NULL,current_job,file);
 249         if (xbt_dynar_length(file->tasks_before)>1) {
 250                 WARN1("File %s created at more than one location...",file->name);
 251         }
 252 }
 253