2 /* pmm - parallel matrix multiplication "double diffusion" */
4 /* Copyright (c) 2006 Ahmed Harbaoui. */
5 /* Copyright (c) 2006 Martin Quinson. */
6 /* All rights reserved. */
8 /* This program is free software; you can redistribute it and/or modify it
9 * under the terms of the license (GNU LGPL) which comes with this package. */
12 #include "xbt/matrix.h"
13 #define PROC_MATRIX_SIZE 6
14 #define SLAVE_COUNT (PROC_MATRIX_SIZE*PROC_MATRIX_SIZE)
16 #define DATA_MATRIX_SIZE 600
17 const int submatrix_size = DATA_MATRIX_SIZE/PROC_MATRIX_SIZE;
19 XBT_LOG_NEW_DEFAULT_CATEGORY(pmm,"Parallel Matrix Multiplication");
21 /* struct for recovering results */
22 GRAS_DEFINE_TYPE(s_result,struct s_result {
25 xbt_matrix_t C GRAS_ANNOTE(subtype,double);
27 typedef struct s_result result_t;
29 /* struct to send initial data to slave */
30 GRAS_DEFINE_TYPE(s_assignment,struct s_assignment {
33 xbt_host_t line[PROC_MATRIX_SIZE];
34 xbt_host_t row[PROC_MATRIX_SIZE];
35 xbt_matrix_t A GRAS_ANNOTE(subtype,double);
36 xbt_matrix_t B GRAS_ANNOTE(subtype,double);
38 typedef struct s_assignment s_assignment_t;
40 /* register messages which may be sent (common to client and server) */
41 static void register_messages(void) {
42 gras_datadesc_type_t result_type;
43 gras_datadesc_type_t assignment_type;
45 gras_datadesc_set_const("PROC_MATRIX_SIZE",PROC_MATRIX_SIZE);
46 result_type=gras_datadesc_by_symbol(s_result);
47 assignment_type=gras_datadesc_by_symbol(s_assignment);
49 /* receive a final result from slave */
50 gras_msgtype_declare("result", result_type);
52 /* send from master to slave to assign a position and some data */
53 gras_msgtype_declare("assignment", assignment_type);
55 /* send data between slaves */
56 gras_msgtype_declare("dataA", gras_datadesc_matrix(gras_datadesc_by_name("double"),NULL));
57 gras_msgtype_declare("dataB", gras_datadesc_matrix(gras_datadesc_by_name("double"),NULL));
60 /* Function prototypes */
61 int slave (int argc,char *argv[]);
62 int master (int argc,char *argv[]);
65 /* **********************************************************************
67 * **********************************************************************/
69 /* Global private data */
77 /*** Function Scatter Sequentiel ***/
79 static void scatter(){
83 /*** Function: Scatter // ***/
85 static void scatter_parl(){
87 }/* end_of_Scatter // */
89 /*** Function: multiplication ***/
91 static void multiplication(){
93 }/* end_of_multiplication */
95 /*** Function: gather ***/
101 int master (int argc,char *argv[]) {
110 /* Init the GRAS's infrastructure */
111 gras_init(&argc, argv);
113 xbt_host_t grid[SLAVE_COUNT]; /* The slaves */
114 gras_socket_t socket[SLAVE_COUNT]; /* sockets for brodcast to slaves */
116 /* Initialize Matrices */
118 A = xbt_matrix_double_new_id(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
119 B = xbt_matrix_double_new_seq(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
120 C = xbt_matrix_double_new_zeros(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
122 /* Get arguments and create sockets */
128 /************************* Init Data Send *********************************/
131 for( i=1;i<argc && i<=SLAVE_COUNT;i++){
132 grid[i-1]=xbt_host_from_string(argv[i]);
133 socket[i-1]=gras_socket_client(grid[i-1]->name,grid[i-1]->port);
135 INFO2("Connected to %s:%d.",grid[i-1]->name,grid[i-1]->port);
137 xbt_assert2(i-1==SLAVE_COUNT,
138 "Not enough slaves for this setting (got %d of %d). Change the deployment file",
140 /* FIXME: let the surnumerous slave die properly */
143 INFO0("XXXXXXXXXXXXXXXXXXXXXX begin Multiplication");
144 for(i=0 ; i<SLAVE_COUNT; i++){
145 s_assignment_t assignment;
148 assignment.linepos=line; // assigned line
149 assignment.rowpos=row; // assigned row
152 for (j=0; j<PROC_MATRIX_SIZE; j++) {
153 assignment.row[j] = grid[ j*PROC_MATRIX_SIZE+(row) ] ;
154 assignment.line[j] = grid[ (line)*PROC_MATRIX_SIZE+j ] ;
157 assignment.A=xbt_matrix_new_sub(A,
158 submatrix_size,submatrix_size,
159 submatrix_size*line,submatrix_size*row,
161 assignment.B=xbt_matrix_new_sub(B,
162 submatrix_size,submatrix_size,
163 submatrix_size*line,submatrix_size*row,
166 if (row >= PROC_MATRIX_SIZE) {
171 gras_msg_send(socket[i],gras_msgtype_by_name("assignment"),&assignment);
172 xbt_matrix_free(assignment.A);
173 xbt_matrix_free(assignment.B);
177 /******************************* multiplication ********************************/
178 /* wait for results */
179 for( i=0;i< SLAVE_COUNT;i++){
180 gras_msg_wait(6000,gras_msgtype_by_name("result"),&from,&result);
181 xbt_matrix_copy_values(C,result.C, submatrix_size,submatrix_size,
182 submatrix_size*result.linepos,
183 submatrix_size*result.rowpos,
185 xbt_matrix_free(result.C);
188 INFO0 ("The Result of Multiplication is :");
189 xbt_matrix_dump(C,"C:res",0,xbt_matrix_dump_display_double);
191 for(i=0; i<SLAVE_COUNT; i++) {
192 gras_socket_close(socket[i]);
193 xbt_host_free(grid[i]);
201 } /* end_of_master */
203 /* **********************************************************************
205 * **********************************************************************/
207 int slave(int argc,char *argv[]) {
212 xbt_matrix_t bA=xbt_matrix_new(submatrix_size,submatrix_size,
213 sizeof(double),NULL);
214 xbt_matrix_t bB=xbt_matrix_new(submatrix_size,submatrix_size,
215 sizeof(double),NULL);
218 xbt_matrix_t mydataA,mydataB;
219 xbt_matrix_t bC=xbt_matrix_double_new_zeros(submatrix_size,submatrix_size);
223 gras_socket_t from,sock; /* to exchange data with my neighbor */
224 gras_socket_t master; /* for the barrier */
226 /* sockets for brodcast to other slave */
227 gras_socket_t socket_line[PROC_MATRIX_SIZE-1];
228 gras_socket_t socket_row[PROC_MATRIX_SIZE-1];
229 memset(socket_line,0,sizeof(socket_line));
230 memset(socket_row,0,sizeof(socket_row));
232 /* Init the GRAS's infrastructure */
233 gras_init(&argc, argv);
235 /* Create my master socket */
236 sock = gras_socket_server(atoi(argv[1]));
239 /* Register the known messages */
242 /* Recover my initialized Data and My Position*/
243 s_assignment_t assignment;
244 INFO2("Launch %s (port=%d); wait for my enrole message",argv[0],gras_os_myport());
246 gras_msg_wait(600,gras_msgtype_by_name("assignment"),&master,&assignment);
248 RETHROW0("Can't get my assignment from master : %s");
250 myline = assignment.linepos;
251 myrow = assignment.rowpos;
252 mydataA = assignment.A;
253 mydataB = assignment.B;
255 INFO2("Receive my pos (%d,%d) and assignment",myline,myrow);
257 /* Get my neighborhood from the assignment message (skipping myself) */
259 for (i=0,j=0 ; i<PROC_MATRIX_SIZE ; i++){
260 if (strcmp(gras_os_myname(),assignment.line[i]->name)) {
261 socket_line[j]=gras_socket_client(assignment.line[i]->name,
262 assignment.line[i]->port);
265 xbt_host_free(assignment.line[i]);
267 for (i=0,j=0 ; i<PROC_MATRIX_SIZE ; i++){
268 if (strcmp(gras_os_myname(),assignment.row[i]->name)) {
269 socket_row[j]=gras_socket_client(assignment.row[i]->name,
270 assignment.row[i]->port);
273 xbt_host_free(assignment.row[i]);
276 for (step=0; step<PROC_MATRIX_SIZE;step++) {
278 /* a line brodcast */
280 INFO2("LINE: step(%d) = Myline(%d). Broadcast my data.",step,myline);
281 for (l=0;l < PROC_MATRIX_SIZE-1 ;l++)
282 gras_msg_send(socket_row[l],
283 gras_msgtype_by_name("dataB"),
287 bB = xbt_matrix_new_sub(mydataB,
288 submatrix_size,submatrix_size,
293 gras_msg_wait(600,gras_msgtype_by_name("dataB"),&from,&bB);
295 RETHROW0("Can't get a data message from line : %s");
297 INFO3("LINE: step(%d) <> Myline(%d). Receive data from %s",step,myline,
298 gras_socket_peer_name(from));
303 INFO2("ROW: step(%d)=myrow(%d). Broadcast my data",step,myrow);
304 for (l=1;l < PROC_MATRIX_SIZE ;l++)
305 gras_msg_send(socket_line[l-1],gras_msgtype_by_name("dataA"), &mydataA);
307 bA = xbt_matrix_new_sub(mydataA,
308 submatrix_size,submatrix_size,
313 gras_msg_wait(1200,gras_msgtype_by_name("dataA"), &from,&bA);
315 RETHROW0("Can't get a data message from row : %s");
317 INFO3("ROW: step(%d)<>myrow(%d). Receive data from %s",step,myrow,
318 gras_socket_peer_name(from));
320 xbt_matrix_double_addmult(bA,bB,bC);
324 /* send Result to master */
326 result.linepos=myline;
330 gras_msg_send(master, gras_msgtype_by_name("result"),&result);
332 RETHROW0("Failed to send PING to server: %s");
334 INFO2(">>>>>>>> Result sent to %s:%d <<<<<<<<",
335 gras_socket_peer_name(master),gras_socket_peer_port(master));
336 /* Free the allocated resources, and shut GRAS down */
342 xbt_matrix_free(mydataA);
343 xbt_matrix_free(mydataB);
344 gras_socket_close(sock);
345 gras_socket_close(master);
346 gras_socket_close(from);
347 /* FIXME: Some of these sockets are "not known", no idea why *
348 for (l=0; l < PROC_MATRIX_SIZE-1; l++) {
350 gras_socket_close(socket_line[l]);
352 gras_socket_close(socket_row[l]);