--- /dev/null
+/* Copyright (c) 2010-2014. The SimGrid Team.
+ * All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include <stdio.h>
+#include "msg/msg.h" /* Yeah! If you want to use msg, you need to include msg/msg.h */
+#include "xbt/sysdep.h" /* calloc, printf */
+#include "mpi.h"
+/* Create a log channel to have nice outputs. */
+#include "xbt/log.h"
+#include "xbt/asserts.h"
+#include "smpi/private.h"
+XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test,
+ "Messages specific for this msg example");
+
+int master(int argc, char *argv[]);
+int slave(int argc, char *argv[]);
+int master_mpi(int argc, char *argv[]);
+int alltoall_mpi(int argc, char *argv[]);
+
+/** Emitter function */
+int master(int argc, char *argv[])
+{
+ long number_of_tasks = atol(argv[1]);
+ double task_comp_size = atof(argv[2]);
+ double task_comm_size = atof(argv[3]);
+ long slaves_count = atol(argv[4]);
+
+ int i;
+
+ XBT_INFO("Got %ld slaves and %ld tasks to process", slaves_count,
+ number_of_tasks);
+
+ for (i = 0; i < number_of_tasks; i++) {
+ char mailbox[256];
+ char sprintf_buffer[256];
+ msg_task_t task = NULL;
+
+ sprintf(mailbox, "slave-%ld", i % slaves_count);
+ sprintf(sprintf_buffer, "Task_%d", i);
+ task =
+ MSG_task_create(sprintf_buffer, task_comp_size, task_comm_size,
+ NULL);
+ if (number_of_tasks < 10000 || i % 10000 == 0)
+ XBT_INFO("Sending \"%s\" (of %ld) to mailbox \"%s\"", task->name,
+ number_of_tasks, mailbox);
+
+ MSG_task_send(task, mailbox);
+ }
+
+ XBT_INFO
+ ("All tasks have been dispatched. Let's tell everybody the computation is over.");
+ for (i = 0; i < slaves_count; i++) {
+ char mailbox[80];
+
+ sprintf(mailbox, "slave-%ld", i % slaves_count);
+ msg_task_t finalize = MSG_task_create("finalize", 0, 0, 0);
+ MSG_task_send(finalize, mailbox);
+ }
+
+// XBT_INFO("Goodbye now!");
+ return 0;
+} /* end_of_master */
+
+
+int master_mpi(int argc, char *argv[])
+{
+ MPI_Init(&argc, &argv);
+
+ int rank;
+ MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+ XBT_INFO("here for rank %d", rank);
+ int test[1000]={rank};
+ if(rank==0)
+ MPI_Send(&test, 1000,
+ MPI_INT, 1, 1, MPI_COMM_WORLD);
+ else
+ MPI_Recv(&test, 1000,
+ MPI_INT, 0, 1, MPI_COMM_WORLD, MPI_STATUSES_IGNORE);
+
+ XBT_INFO("After comm %d", rank);
+ MPI_Finalize();
+
+ XBT_INFO("After finalize %d %d", rank, test[0]);
+ return 0;
+} /* end_of_master */
+
+
+
+int alltoall_mpi(int argc, char *argv[])
+{
+ MPI_Init(&argc, &argv);
+
+ int rank, size;
+ MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+ MPI_Comm_size(MPI_COMM_WORLD, &size);
+ XBT_INFO("alltoall for rank %d", rank);
+ int* out=malloc(1000*size*sizeof(int));
+ int* in=malloc(1000*size*sizeof(int));
+ MPI_Alltoall(out, 1000, MPI_INT,in, 1000, MPI_INT, MPI_COMM_WORLD);
+
+ XBT_INFO("after alltoall %d", rank);
+ free(out);
+ free(in);
+ MPI_Finalize();
+ return 0;
+} /* end_of_master */
+
+
+/** Receiver function */
+int slave(int argc, char *argv[])
+{
+ msg_task_t task = NULL;
+ _XBT_GNUC_UNUSED int res;
+ int id = -1;
+ char mailbox[80];
+ _XBT_GNUC_UNUSED int read;
+
+ read = sscanf(argv[1], "%d", &id);
+ xbt_assert(read, "Invalid argument %s\n", argv[1]);
+
+ sprintf(mailbox, "slave-%d", id);
+
+ while (1) {
+ res = MSG_task_receive(&(task), mailbox);
+ xbt_assert(res == MSG_OK, "MSG_task_get failed");
+
+// XBT_INFO("Received \"%s\"", MSG_task_get_name(task));
+ if (!strcmp(MSG_task_get_name(task), "finalize")) {
+ MSG_task_destroy(task);
+ break;
+ }
+// XBT_INFO("Processing \"%s\"", MSG_task_get_name(task));
+ MSG_task_execute(task);
+// XBT_INFO("\"%s\" done", MSG_task_get_name(task));
+ MSG_task_destroy(task);
+ task = NULL;
+ }
+ XBT_INFO("I'm done. See you!");
+
+ return 0;
+} /* end_of_slave */
+
+/** Main function */
+int main(int argc, char *argv[])
+{
+ msg_error_t res;
+ const char *platform_file;
+ const char *application_file;
+
+ MSG_init(&argc, argv);
+
+ if (argc < 3) {
+ printf("Usage: %s platform_file deployment_file\n", argv[0]);
+ printf("example: %s msg_platform.xml msg_deployment.xml\n", argv[0]);
+ exit(1);
+ }
+ platform_file = argv[1];
+ application_file = argv[2];
+
+ /* MSG_config("workstation/model","KCCFLN05"); */
+ { /* Simulation setting */
+ MSG_create_environment(platform_file);
+ }
+ { /* Application deployment */
+ MSG_function_register("master", master);
+ MSG_function_register("slave", slave);
+ // launch two MPI applications as well, one using master_mpi function as main on 2 nodes
+ SMPI_app_instance_register("master_mpi", master_mpi,2);
+ // the second performing an alltoall on 4 nodes
+ SMPI_app_instance_register("alltoall_mpi", alltoall_mpi,4);
+ MSG_launch_application(application_file);
+ SMPI_init();
+ }
+ res = MSG_main();
+
+ XBT_INFO("Simulation time %g", MSG_get_clock());
+
+
+ SMPI_finalize();
+ if (res == MSG_OK)
+ return 0;
+ else
+ return 1;
+} /* end_of_main */
