X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/1a5ae581508abf014bc4dcbc65f2d5e5af9da573..7862d928239639a5fbde23866f80f1b234ff8396:/examples/msg/parallel_task/parallel_task.c diff --git a/examples/msg/parallel_task/parallel_task.c b/examples/msg/parallel_task/parallel_task.c deleted file mode 100644 index 46990fa126..0000000000 --- a/examples/msg/parallel_task/parallel_task.c +++ /dev/null @@ -1,92 +0,0 @@ -/* Copyright (c) 2007-2015. 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 "simgrid/msg.h" -#include "simgrid/plugins/energy.h" - -XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, "Messages specific for this msg example"); - -/** @addtogroup MSG_examples - * - * - parallel_task/parallel_task.c: Demonstrates the use of @ref MSG_parallel_task_create, to create special - * tasks that run on several hosts at the same time. The resulting simulations are very close to what can be - * achieved in @ref SD_API, but still allows to use the other features of MSG (it'd be cool to be able to mix - * interfaces, but it's not possible ATM). - */ - -static int runner(int argc, char *argv[]) -{ - /* Retrieve the list of all hosts as an array of hosts */ - xbt_dynar_t slaves_dynar = MSG_hosts_as_dynar(); - int slaves_count = xbt_dynar_length(slaves_dynar); - msg_host_t *slaves = xbt_dynar_to_array(slaves_dynar); - - XBT_INFO("First, build a classical parallel task, with 1 Gflop to execute on each node, " - "and 10MB to exchange between each pair"); - double *computation_amounts = xbt_new0(double, slaves_count); - double *communication_amounts = xbt_new0(double, slaves_count * slaves_count); - - for (int i = 0; i < slaves_count; i++) - computation_amounts[i] = 1e9; // 1 Gflop - - for (int i = 0; i < slaves_count; i++) - for (int j = i + 1; j < slaves_count; j++) - communication_amounts[i * slaves_count + j] = 1e7; // 10 MB - - msg_task_t ptask = - MSG_parallel_task_create("parallel task", slaves_count, slaves, computation_amounts, communication_amounts, NULL); - MSG_parallel_task_execute(ptask); - MSG_task_destroy(ptask); - /* The arrays communication_amounts and computation_amounts are not to be freed manually */ - - XBT_INFO("Then, build a parallel task involving only computations and no communication (1 Gflop per node)"); - computation_amounts = xbt_new0(double, slaves_count); - for (int i = 0; i < slaves_count; i++) - computation_amounts[i] = 1e9; // 1 Gflop - ptask = - MSG_parallel_task_create("parallel exec", slaves_count, slaves, computation_amounts, NULL/* no comm */, NULL); - MSG_parallel_task_execute(ptask); - MSG_task_destroy(ptask); - - XBT_INFO("Finally, trick the ptask to do a 'remote execution', on host %s", MSG_host_get_name(slaves[1])); - computation_amounts = xbt_new0(double, 1); - computation_amounts[0] = 1e9; // 1 Gflop - msg_host_t *remote = xbt_new(msg_host_t,1); - remote[0] = slaves[1]; - ptask = MSG_parallel_task_create("remote exec", 1, remote, computation_amounts, NULL/* no comm */, NULL); - MSG_parallel_task_execute(ptask); - MSG_task_destroy(ptask); - free(remote); - - XBT_INFO("Goodbye now!"); - free(slaves); - return 0; -} - -int main(int argc, char *argv[]) -{ - MSG_init(&argc, argv); - MSG_config("host/model", "ptask_L07"); - - xbt_assert(argc <= 3, "1Usage: %s [--energy]", argv[0]); - xbt_assert(argc >= 2, "2Usage: %s [--energy]", argv[0]); - - if(argc == 3 && argv[2][2] == 'e') - sg_energy_plugin_init(); - - MSG_create_environment(argv[1]); - - /* Pick a process, no matter which, from the platform file */ - xbt_dynar_t all_hosts = MSG_hosts_as_dynar(); - msg_host_t first_host = xbt_dynar_getfirst_as(all_hosts,msg_host_t); - xbt_dynar_free(&all_hosts); - - MSG_process_create("test", runner, NULL, first_host); - msg_error_t res = MSG_main(); - XBT_INFO("Simulation done."); - - return res != MSG_OK; -}