1 /* Copyright (c) 2004-2014. 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 "xbt/sysdep.h"
9 #include "xbt/synchro_core.h"
13 static xbt_dict_t smpi_instances = NULL;
14 extern int process_count;
15 extern int* index_to_process_data;
17 typedef struct s_smpi_mpi_instance{
20 int present_processes;
23 xbt_bar_t finalization_barrier;
24 } s_smpi_mpi_instance_t;
27 /** \ingroup smpi_simulation
28 * \brief Registers a running instance of a MPI program.
30 * FIXME : remove MSG from the loop at some point.
31 * \param name the reference name of the function.
32 * \param code the main mpi function (must have the same prototype than the main function of any C program: int ..(int argc, char *argv[]))
33 * \param num_processes the size of the instance we want to deploy
35 void SMPI_app_instance_register(const char *name, xbt_main_func_t code, int num_processes)
37 SIMIX_function_register(name, code);
39 s_smpi_mpi_instance_t* instance =
40 (s_smpi_mpi_instance_t*)xbt_malloc(sizeof(s_smpi_mpi_instance_t));
42 instance->name = name;
43 instance->size = num_processes;
44 instance->present_processes = 0;
45 instance->index = process_count;
46 instance->comm_world = MPI_COMM_NULL;
47 instance->finalization_barrier=xbt_barrier_init(num_processes);
49 process_count+=num_processes;
52 smpi_instances = xbt_dict_new_homogeneous(xbt_free_f);
55 xbt_dict_set(smpi_instances, name, (void*)instance, NULL);
60 //get the index of the process in the process_data array
61 void smpi_deployment_register_process(const char* instance_id, int rank, int index,MPI_Comm** comm, xbt_bar_t* bar){
63 if(!smpi_instances){//no instance registered, we probably used smpirun.
64 index_to_process_data[index]=index;
70 s_smpi_mpi_instance_t* instance = xbt_dict_get_or_null(smpi_instances, instance_id);
72 xbt_die("Error, unknown instance %s", instance_id);
74 if(instance->comm_world == MPI_COMM_NULL){
75 MPI_Group group = smpi_group_new(instance->size);
76 instance->comm_world = smpi_comm_new(group, NULL);
78 instance->present_processes++;
79 index_to_process_data[index]=instance->index+rank;
80 smpi_group_set_mapping(smpi_comm_group(instance->comm_world), index, rank);
81 *bar = instance->finalization_barrier;
82 *comm = &instance->comm_world;
86 void smpi_deployment_cleanup_instances(){
87 xbt_dict_cursor_t cursor = NULL;
88 s_smpi_mpi_instance_t* instance = NULL;
90 xbt_dict_foreach(smpi_instances, cursor, name, instance) {
91 if(instance->comm_world!=MPI_COMM_NULL)
92 while (smpi_group_unuse(smpi_comm_group(instance->comm_world)) > 0);
93 xbt_free(instance->comm_world);
94 xbt_barrier_destroy(instance->finalization_barrier);
96 xbt_dict_free(&smpi_instances);