/* pmm - parallel matrix multiplication "double diffusion" */
-/* Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011. The SimGrid Team.
+/* Copyright (c) 2006-2015. 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 "msg/msg.h"
+
+#include "simgrid/msg.h"
#include "xbt/matrix.h"
#include "xbt/log.h"
#include "xbt/xbt_os_time.h"
-XBT_LOG_NEW_DEFAULT_CATEGORY(msg_pmm,
- "Messages specific for this msg example");
+/** @addtogroup MSG_examples
+ *
+ * - <b>pmm/msg_pmm.c</b>: Parallel Matrix Multiplication is a little application. This is something that most MPI
+ * developers have written during their class, here implemented using MSG instead of MPI.
+ */
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(msg_pmm, "Messages specific for this msg example");
-/* This example should always be executed using a deployment of
- * GRID_SIZE * GRID_SIZE nodes. */
-#define GRID_SIZE 3 /* Modify to adjust the grid's size */
-#define NODE_MATRIX_SIZE 300 /* Ammount of work done by each node*/
+/* This example should always be executed using a deployment of GRID_SIZE * GRID_SIZE nodes. */
+#define GRID_SIZE 3 /* Modify to adjust the grid's size */
+#define NODE_MATRIX_SIZE 300 /* Amount of work done by each node*/
#define GRID_NUM_NODES GRID_SIZE * GRID_SIZE
#define MATRIX_SIZE NODE_MATRIX_SIZE * GRID_SIZE
xbt_matrix_t B;
} s_node_job_t, *node_job_t;
-/**
+/*
* Structure for recovering results
*/
typedef struct s_result {
int node(int argc, char **argv)
{
- int k, myid;
char my_mbox[MAILBOX_NAME_SIZE];
node_job_t myjob, jobs[GRID_NUM_NODES];
- xbt_matrix_t A, B, C = NULL, sA, sB, sC;
+ xbt_matrix_t A, B, C, sA, sB, sC;
result_t result;
xbt_assert(argc != 1, "Wrong number of arguments for this node");
/* Initialize the node's data-structures */
- myid = atoi(argv[1]);
+ int myid = xbt_str_parse_int(argv[1], "Invalid ID received as first node parameter: %s");
snprintf(my_mbox, MAILBOX_NAME_SIZE - 1, "%d", myid);
sC = xbt_matrix_double_new_zeros(NODE_MATRIX_SIZE, NODE_MATRIX_SIZE);
/* Broadcast the rest of the jobs to the other nodes */
broadcast_jobs(jobs + 1);
- }else{
+ } else {
+ A = B = C = NULL; /* Avoid warning at compilation */
myjob = wait_job(myid);
}
/* Multiplication main-loop */
XBT_VERB("Start Multiplication's Main-loop");
- for(k=0; k < GRID_SIZE; k++){
+ for (int k=0; k < GRID_SIZE; k++){
if(k == myjob->col){
XBT_VERB("Broadcast sA(%d,%d) to row %d", myjob->row, k, myjob->row);
broadcast_matrix(myjob->A, NEIGHBOURS_COUNT, myjob->nodes_in_row);
receive_results(results);
/* First add our results */
- xbt_matrix_copy_values(C, sC, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE,
- 0, 0, 0, 0, NULL);
+ xbt_matrix_copy_values(C, sC, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE, 0, 0, 0, 0, NULL);
/* Reconstruct the rest of the result matrix */
for (node = 1; node < GRID_NUM_NODES; node++){
- xbt_matrix_copy_values(C, results[node]->sC,
- NODE_MATRIX_SIZE, NODE_MATRIX_SIZE,
- NODE_MATRIX_SIZE * results[node]->row,
- NODE_MATRIX_SIZE * results[node]->col,
+ xbt_matrix_copy_values(C, results[node]->sC, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE,
+ NODE_MATRIX_SIZE * results[node]->row, NODE_MATRIX_SIZE * results[node]->col,
0, 0, NULL);
xbt_matrix_free(results[node]->sC);
xbt_free(results[node]);
//xbt_matrix_dump(C, "C:res", 0, xbt_matrix_dump_display_double);
+ xbt_matrix_free(A);
+ xbt_matrix_free(B);
+ xbt_matrix_free(C);
+
/* The rest: return the result to node 0 */
}else{
- m_task_t task;
+ msg_task_t task;
XBT_VERB("Multiplication done. Send the sub-result.");
result = xbt_new0(s_result_t, 1);
result->row = myjob->row;
result->col = myjob->col;
- result->sC =
- xbt_matrix_new_sub(sC, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE, 0, 0, NULL);
+ result->sC = xbt_matrix_new_sub(sC, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE, 0, 0, NULL);
task = MSG_task_create("result",100,100,result);
- MSG_task_dsend(task, "0", (void_f_pvoid_t) MSG_task_destroy);
+ MSG_task_send(task, "0");
}
/* Clean up and finish*/
+ xbt_matrix_free(sC);
xbt_matrix_free(myjob->A);
xbt_matrix_free(myjob->B);
xbt_free(myjob);
*/
static void broadcast_jobs(node_job_t *jobs)
{
- int node;
char node_mbox[MAILBOX_NAME_SIZE];
- m_task_t task;
msg_comm_t comms[GRID_NUM_NODES - 1] = {0};
XBT_VERB("Broadcast Jobs");
- for (node = 1; node < GRID_NUM_NODES; node++){
- task = MSG_task_create("Job", 100, 100, jobs[node-1]);
+ for (int node = 1; node < GRID_NUM_NODES; node++){
+ msg_task_t task = MSG_task_create("Job", 100, 100, jobs[node-1]);
snprintf(node_mbox, MAILBOX_NAME_SIZE - 1, "%d", node);
comms[node-1] = MSG_task_isend(task, node_mbox);
}
MSG_comm_waitall(comms, GRID_NUM_NODES-1, -1);
+ for (int node = 1; node < GRID_NUM_NODES; node++)
+ MSG_comm_destroy(comms[node - 1]);
}
static node_job_t wait_job(int selfid)
{
- m_task_t task = NULL;
+ msg_task_t task = NULL;
char self_mbox[MAILBOX_NAME_SIZE];
- node_job_t job;
snprintf(self_mbox, MAILBOX_NAME_SIZE - 1, "%d", selfid);
- MSG_task_receive(&task, self_mbox);
- job = (node_job_t)MSG_task_get_data(task);
+ msg_error_t err = MSG_task_receive(&task, self_mbox);
+ xbt_assert(err == MSG_OK, "Error while receiving from %s (%d)", self_mbox, (int)err);
+ node_job_t job = (node_job_t)MSG_task_get_data(task);
MSG_task_destroy(task);
XBT_VERB("Got Job (%d,%d)", job->row, job->col);
static void broadcast_matrix(xbt_matrix_t M, int num_nodes, int *nodes)
{
- int node;
char node_mbox[MAILBOX_NAME_SIZE];
- m_task_t task;
- xbt_matrix_t sM;
- for(node=0; node < num_nodes; node++){
+ for(int node=0; node < num_nodes; node++){
snprintf(node_mbox, MAILBOX_NAME_SIZE - 1, "%d", nodes[node]);
- sM = xbt_matrix_new_sub(M, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE, 0, 0, NULL);
- task = MSG_task_create("sub-matrix", 100, 100, sM);
+ xbt_matrix_t sM = xbt_matrix_new_sub(M, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE, 0, 0, NULL);
+ msg_task_t task = MSG_task_create("sub-matrix", 100, 100, sM);
MSG_task_dsend(task, node_mbox, task_cleanup);
XBT_DEBUG("sub-matrix sent to %s", node_mbox);
}
-
}
static void get_sub_matrix(xbt_matrix_t *sM, int selfid)
{
- m_task_t task = NULL;
+ msg_task_t task = NULL;
char node_mbox[MAILBOX_NAME_SIZE];
XBT_VERB("Get sub-matrix");
snprintf(node_mbox, MAILBOX_NAME_SIZE - 1, "%d", selfid);
- MSG_task_receive(&task, node_mbox);
+ msg_error_t err = MSG_task_receive(&task, node_mbox);
+ xbt_assert(err == MSG_OK, "Error while receiving from %s (%d)", node_mbox, (int)err);
*sM = (xbt_matrix_t)MSG_task_get_data(task);
MSG_task_destroy(task);
}
static void task_cleanup(void *arg){
- m_task_t task = (m_task_t)arg;
+ msg_task_t task = (msg_task_t)arg;
xbt_matrix_t m = (xbt_matrix_t)MSG_task_get_data(task);
xbt_matrix_free(m);
MSG_task_destroy(task);
}
-/**
- * \brief Main function.
- */
int main(int argc, char *argv[])
{
xbt_os_timer_t timer = xbt_os_timer_new();
- MSG_global_init(&argc, argv);
-
- char **options = &argv[1];
- const char* platform_file = options[0];
- const char* application_file = options[1];
-
- MSG_set_channel_number(0);
- MSG_create_environment(platform_file);
+ MSG_init(&argc, argv);
+ MSG_create_environment(argv[1]);
MSG_function_register("node", node);
- MSG_launch_application(application_file);
+ for(int i = 0 ; i< 9; i++) {
+ char *hostname = bprintf("node-%d.acme.org", i);
+ char **argvF = xbt_new(char *, 3);
+ argvF[0] = xbt_strdup("node");
+ argvF[1] = bprintf("%d", i);
+ argvF[2] = NULL;
+ MSG_process_create_with_arguments("node", node, NULL, MSG_host_by_name(hostname), 2, argvF);
+ xbt_free(hostname);
+ }
- xbt_os_timer_start(timer);
- MSG_error_t res = MSG_main();
- xbt_os_timer_stop(timer);
+ xbt_os_cputimer_start(timer);
+ msg_error_t res = MSG_main();
+ xbt_os_cputimer_stop(timer);
XBT_CRITICAL("Simulated time: %g", MSG_get_clock());
- MSG_clean();
-
- if (res == MSG_OK)
- return 0;
- else
- return 1;
+ return res != MSG_OK;
}
static void create_jobs(xbt_matrix_t A, xbt_matrix_t B, node_job_t *jobs)
{
- int node, j, k, row = 0, col = 0;
+ int row = 0, col = 0;
- for (node = 0; node < GRID_NUM_NODES; node++){
+ for (int node = 0; node < GRID_NUM_NODES; node++){
XBT_VERB("Create job %d", node);
jobs[node] = xbt_new0(s_node_job_t, 1);
jobs[node]->row = row;
/* Compute who are the nodes in the same row and column */
/* than the node receiving this job */
- for (j = 0, k = 0; j < GRID_SIZE; j++) {
+ for (int j = 0, k = 0; j < GRID_SIZE; j++) {
if (node != (GRID_SIZE * row) + j) {
jobs[node]->nodes_in_row[k] = (GRID_SIZE * row) + j;
k++;
}
}
- for (j = 0, k = 0; j < GRID_SIZE; j++) {
+ for (int j = 0, k = 0; j < GRID_SIZE; j++) {
if (node != (GRID_SIZE * j) + col) {
jobs[node]->nodes_in_col[k] = (GRID_SIZE * j) + col;
k++;
/* Assign a sub matrix of A and B to the job */
jobs[node]->A =
- xbt_matrix_new_sub(A, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE,
- NODE_MATRIX_SIZE * row, NODE_MATRIX_SIZE * col,
- NULL);
+ xbt_matrix_new_sub(A, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE * row, NODE_MATRIX_SIZE * col, NULL);
jobs[node]->B =
- xbt_matrix_new_sub(B, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE,
- NODE_MATRIX_SIZE * row, NODE_MATRIX_SIZE * col,
- NULL);
+ xbt_matrix_new_sub(B, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE, NODE_MATRIX_SIZE * row, NODE_MATRIX_SIZE * col, NULL);
if (++col >= GRID_SIZE){
col = 0;
}
}
-static void receive_results(result_t *results){
- int node;
+static void receive_results(result_t *results) {
msg_comm_t comms[GRID_NUM_NODES-1] = {0};
- m_task_t tasks[GRID_NUM_NODES-1] = {0};
+ msg_task_t tasks[GRID_NUM_NODES-1] = {0};
XBT_VERB("Receive Results.");
/* Get the result from the nodes in the GRID */
- for (node = 1; node < GRID_NUM_NODES; node++){
+ for (int node = 1; node < GRID_NUM_NODES; node++)
comms[node-1] = MSG_task_irecv(&tasks[node-1], "0");
- }
MSG_comm_waitall(comms, GRID_NUM_NODES - 1, -1);
+ for (int node = 1; node < GRID_NUM_NODES; node++)
+ MSG_comm_destroy(comms[node - 1]);
/* Reconstruct the result matrix */
- for (node = 1; node < GRID_NUM_NODES; node++){
+ for (int node = 1; node < GRID_NUM_NODES; node++){
results[node] = (result_t)MSG_task_get_data(tasks[node-1]);
MSG_task_destroy(tasks[node-1]);
}
