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 2
14 #define NEIGHBOR_COUNT PROC_MATRIX_SIZE - 1
15 #define SLAVE_COUNT (PROC_MATRIX_SIZE*PROC_MATRIX_SIZE)
17 #define DATA_MATRIX_SIZE 8
18 const int submatrix_size = DATA_MATRIX_SIZE/PROC_MATRIX_SIZE;
20 XBT_LOG_NEW_DEFAULT_CATEGORY(pmm,"Parallel Matrix Multiplication");
22 /* struct for recovering results */
23 GRAS_DEFINE_TYPE(s_result,struct s_result {
26 xbt_matrix_t C GRAS_ANNOTE(subtype,double);
28 typedef struct s_result result_t;
30 /* struct to send initial data to slave */
31 GRAS_DEFINE_TYPE(s_assignment,struct s_assignment {
34 xbt_host_t line[NEIGHBOR_COUNT];
35 xbt_host_t row[NEIGHBOR_COUNT];
36 xbt_matrix_t A GRAS_ANNOTE(subtype,double);
37 xbt_matrix_t B GRAS_ANNOTE(subtype,double);
39 typedef struct s_assignment s_assignment_t;
41 /* register messages which may be sent (common to client and server) */
42 static void register_messages(void) {
43 gras_datadesc_type_t result_type;
44 gras_datadesc_type_t assignment_type;
46 gras_datadesc_set_const("NEIGHBOR_COUNT",NEIGHBOR_COUNT);
47 result_type=gras_datadesc_by_symbol(s_result);
48 assignment_type=gras_datadesc_by_symbol(s_assignment);
50 /* receive a final result from slave */
51 gras_msgtype_declare("result", result_type);
53 /* send from master to slave to assign a position and some data */
54 gras_msgtype_declare("assignment", assignment_type);
56 /* send data between slaves */
57 gras_msgtype_declare("dataA", gras_datadesc_matrix(gras_datadesc_by_name("double"),NULL));
58 gras_msgtype_declare("dataB", gras_datadesc_matrix(gras_datadesc_by_name("double"),NULL));
61 /* Function prototypes */
62 int slave (int argc,char *argv[]);
63 int master (int argc,char *argv[]);
66 /* **********************************************************************
68 * **********************************************************************/
70 /* Global private data */
78 /*** Function Scatter Sequentiel ***/
80 static void scatter(){
84 /*** Function: Scatter // ***/
86 static void scatter_parl(){
88 }/* end_of_Scatter // */
90 /*** Function: multiplication ***/
92 static void multiplication(){
94 }/* end_of_multiplication */
96 /*** Function: gather ***/
102 int master (int argc,char *argv[]) {
112 xbt_host_t grid[SLAVE_COUNT]; /* The slaves */
113 gras_socket_t socket[SLAVE_COUNT]; /* sockets for brodcast to slaves */
115 /* Init the GRAS's infrastructure */
116 gras_init(&argc, argv);
119 /* Initialize Matrices */
120 A = xbt_matrix_double_new_id(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
121 B = xbt_matrix_double_new_seq(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
122 C = xbt_matrix_double_new_zeros(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
124 /* Get arguments and create sockets */
130 /************************* Init Data Send *********************************/
133 for( i=1;i<argc && i<=SLAVE_COUNT;i++){
134 grid[i-1]=xbt_host_from_string(argv[i]);
135 socket[i-1]=gras_socket_client(grid[i-1]->name,grid[i-1]->port);
137 INFO2("Connected to %s:%d.",grid[i-1]->name,grid[i-1]->port);
139 xbt_assert2(i-1==SLAVE_COUNT,
140 "Not enough slaves for this setting (got %d of %d). Change the deployment file",
142 /* FIXME: let the surnumerous slave die properly */
145 INFO0("XXXXXXXXXXXXXXXXXXXXXX begin Multiplication");
146 for(i=0 ; i<SLAVE_COUNT; i++){
147 s_assignment_t assignment;
150 assignment.linepos=line; // assigned line
151 assignment.rowpos=row; // assigned row
154 for (j=0,k=0; j<PROC_MATRIX_SIZE; j++) {
155 if (i != j*PROC_MATRIX_SIZE+(row)) {
156 assignment.row[k] = grid[ j*PROC_MATRIX_SIZE+(row) ] ;
160 for (j=0,k=0; j<PROC_MATRIX_SIZE; j++) {
161 if (i != (line)*PROC_MATRIX_SIZE+j) {
162 assignment.line[k] = grid[ (line)*PROC_MATRIX_SIZE+j ] ;
167 assignment.A=xbt_matrix_new_sub(A,
168 submatrix_size,submatrix_size,
169 submatrix_size*line,submatrix_size*row,
171 assignment.B=xbt_matrix_new_sub(B,
172 submatrix_size,submatrix_size,
173 submatrix_size*line,submatrix_size*row,
176 if (row >= PROC_MATRIX_SIZE) {
181 gras_msg_send(socket[i],gras_msgtype_by_name("assignment"),&assignment);
182 xbt_matrix_free(assignment.A);
183 xbt_matrix_free(assignment.B);
187 /******************************* multiplication ********************************/
188 /* wait for results */
189 for( i=0;i< SLAVE_COUNT;i++){
190 gras_msg_wait(6000,gras_msgtype_by_name("result"),&from,&result);
191 xbt_matrix_copy_values(C,result.C, submatrix_size,submatrix_size,
192 submatrix_size*result.linepos,
193 submatrix_size*result.rowpos,
195 xbt_matrix_free(result.C);
198 if (DATA_MATRIX_SIZE < 50) {
199 INFO0 ("The Result of Multiplication is :");
200 xbt_matrix_dump(C,"C:res",0,xbt_matrix_dump_display_double);
202 INFO1("Matrix size too big (%d>50) to be displayed here",DATA_MATRIX_SIZE);
205 for(i=0; i<SLAVE_COUNT; i++) {
206 gras_socket_close(socket[i]);
207 xbt_host_free(grid[i]);
215 } /* end_of_master */
217 /* **********************************************************************
219 * **********************************************************************/
221 int slave(int argc,char *argv[]) {
226 xbt_matrix_t bA=xbt_matrix_new(submatrix_size,submatrix_size,
227 sizeof(double),NULL);
228 xbt_matrix_t bB=xbt_matrix_new(submatrix_size,submatrix_size,
229 sizeof(double),NULL);
232 xbt_matrix_t mydataA,mydataB;
233 xbt_matrix_t bC=xbt_matrix_double_new_zeros(submatrix_size,submatrix_size);
237 gras_socket_t from,sock; /* to exchange data with my neighbor */
238 gras_socket_t master; /* for the barrier */
240 /* sockets for brodcast to other slave */
241 gras_socket_t socket_line[PROC_MATRIX_SIZE-1];
242 gras_socket_t socket_row[PROC_MATRIX_SIZE-1];
243 memset(socket_line,0,sizeof(socket_line));
244 memset(socket_row,0,sizeof(socket_row));
246 /* Init the GRAS's infrastructure */
247 gras_init(&argc, argv);
249 /* Create my master socket */
250 sock = gras_socket_server(atoi(argv[1]));
253 /* Register the known messages */
256 /* Recover my initialized Data and My Position*/
257 s_assignment_t assignment;
258 INFO2("Launch %s (port=%d); wait for my enrole message",argv[0],gras_os_myport());
260 gras_msg_wait(600,gras_msgtype_by_name("assignment"),&master,&assignment);
262 RETHROW0("Can't get my assignment from master : %s");
264 myline = assignment.linepos;
265 myrow = assignment.rowpos;
266 mydataA = assignment.A;
267 mydataB = assignment.B;
269 INFO2("Receive my pos (%d,%d) and assignment",myline,myrow);
271 /* Get my neighborhood from the assignment message (skipping myself) */
272 for (i=0 ; i<PROC_MATRIX_SIZE-1 ; i++){
273 socket_line[i]=gras_socket_client(assignment.line[i]->name,
274 assignment.line[i]->port);
275 xbt_host_free(assignment.line[i]);
277 for (i=0 ; i<PROC_MATRIX_SIZE-1 ; i++){
278 socket_row[i]=gras_socket_client(assignment.row[i]->name,
279 assignment.row[i]->port);
280 xbt_host_free(assignment.row[i]);
283 for (step=0; step<PROC_MATRIX_SIZE;step++) {
285 /* a line brodcast */
287 INFO3("LINE: step(%d) = Myline(%d). Broadcast my data (myport=%d).",
288 step,myline,gras_os_myport());
289 for (l=0;l < PROC_MATRIX_SIZE-1 ;l++) {
290 INFO2("LINE: Send to %s:%d",
291 gras_socket_peer_name(socket_row[l]),
292 gras_socket_peer_port(socket_row[l]));
293 gras_msg_send(socket_row[l],
294 gras_msgtype_by_name("dataB"),
300 bB = xbt_matrix_new_sub(mydataB,
301 submatrix_size,submatrix_size,
306 gras_msg_wait(600,gras_msgtype_by_name("dataB"),&from,&bB);
308 RETHROW0("Can't get a data message from line : %s");
310 INFO4("LINE: step(%d) <> Myline(%d). Receive data from %s:%d",step,myline,
311 gras_socket_peer_name(from), gras_socket_peer_port(from));
316 INFO2("ROW: step(%d)=myrow(%d). Broadcast my data",step,myrow);
317 for (l=1;l < PROC_MATRIX_SIZE ; l++) {
318 INFO2("ROW: Send to %s:%d",
319 gras_socket_peer_name(socket_line[l-1]),
320 gras_socket_peer_port(socket_line[l-1]));
321 gras_msg_send(socket_line[l-1],gras_msgtype_by_name("dataA"), &mydataA);
324 bA = xbt_matrix_new_sub(mydataA,
325 submatrix_size,submatrix_size,
330 gras_msg_wait(1200,gras_msgtype_by_name("dataA"), &from,&bA);
332 RETHROW0("Can't get a data message from row : %s");
334 INFO3("ROW: step(%d)<>myrow(%d). Receive data from %s",step,myrow,
335 gras_socket_peer_name(from));
337 xbt_matrix_double_addmult(bA,bB,bC);
341 /* send Result to master */
343 result.linepos=myline;
347 gras_msg_send(master, gras_msgtype_by_name("result"),&result);
349 RETHROW0("Failed to send PING to server: %s");
351 INFO2(">>>>>>>> Result sent to %s:%d <<<<<<<<",
352 gras_socket_peer_name(master),gras_socket_peer_port(master));
353 /* Free the allocated resources, and shut GRAS down */
359 xbt_matrix_free(mydataA);
360 xbt_matrix_free(mydataB);
361 gras_socket_close(sock);
362 gras_socket_close(master);
363 gras_socket_close(from);
364 /* FIXME: Some of these sockets are "not known", no idea why *
365 for (l=0; l < PROC_MATRIX_SIZE-1; l++) {
367 gras_socket_close(socket_line[l]);
369 gras_socket_close(socket_row[l]);