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 3
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[]) {
111 xbt_host_t grid[SLAVE_COUNT]; /* The slaves */
112 gras_socket_t socket[SLAVE_COUNT]; /* sockets for brodcast to slaves */
114 /* Init the GRAS's infrastructure */
115 gras_init(&argc, argv);
118 /* Initialize Matrices */
119 A = xbt_matrix_double_new_id(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
120 B = xbt_matrix_double_new_seq(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
121 C = xbt_matrix_double_new_zeros(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
123 /* Get arguments and create sockets */
129 /************************* Init Data Send *********************************/
132 for( i=1;i<argc && i<=SLAVE_COUNT;i++){
133 grid[i-1]=xbt_host_from_string(argv[i]);
134 socket[i-1]=gras_socket_client(grid[i-1]->name,grid[i-1]->port);
136 INFO2("Connected to %s:%d.",grid[i-1]->name,grid[i-1]->port);
138 xbt_assert2(i-1==SLAVE_COUNT,
139 "Not enough slaves for this setting (got %d of %d). Change the deployment file",
141 /* FIXME: let the surnumerous slave die properly */
144 INFO0("XXXXXXXXXXXXXXXXXXXXXX begin Multiplication");
145 for(i=0 ; i<SLAVE_COUNT; i++){
146 s_assignment_t assignment;
149 assignment.linepos=line; // assigned line
150 assignment.rowpos=row; // assigned row
153 for (j=0; j<PROC_MATRIX_SIZE; j++) {
154 assignment.row[j] = grid[ j*PROC_MATRIX_SIZE+(row) ] ;
155 assignment.line[j] = grid[ (line)*PROC_MATRIX_SIZE+j ] ;
158 assignment.A=xbt_matrix_new_sub(A,
159 submatrix_size,submatrix_size,
160 submatrix_size*line,submatrix_size*row,
162 assignment.B=xbt_matrix_new_sub(B,
163 submatrix_size,submatrix_size,
164 submatrix_size*line,submatrix_size*row,
167 if (row >= PROC_MATRIX_SIZE) {
172 gras_msg_send(socket[i],gras_msgtype_by_name("assignment"),&assignment);
173 xbt_matrix_free(assignment.A);
174 xbt_matrix_free(assignment.B);
178 /******************************* multiplication ********************************/
179 /* wait for results */
180 for( i=0;i< SLAVE_COUNT;i++){
181 gras_msg_wait(6000,gras_msgtype_by_name("result"),&from,&result);
182 xbt_matrix_copy_values(C,result.C, submatrix_size,submatrix_size,
183 submatrix_size*result.linepos,
184 submatrix_size*result.rowpos,
186 xbt_matrix_free(result.C);
189 if (DATA_MATRIX_SIZE < 50) {
190 INFO0 ("The Result of Multiplication is :");
191 xbt_matrix_dump(C,"C:res",0,xbt_matrix_dump_display_double);
193 INFO1("Matrix size too big (%d>50) to be displayed here",DATA_MATRIX_SIZE);
196 for(i=0; i<SLAVE_COUNT; i++) {
197 gras_socket_close(socket[i]);
198 xbt_host_free(grid[i]);
206 } /* end_of_master */
208 /* **********************************************************************
210 * **********************************************************************/
212 int slave(int argc,char *argv[]) {
217 xbt_matrix_t bA=xbt_matrix_new(submatrix_size,submatrix_size,
218 sizeof(double),NULL);
219 xbt_matrix_t bB=xbt_matrix_new(submatrix_size,submatrix_size,
220 sizeof(double),NULL);
223 xbt_matrix_t mydataA,mydataB;
224 xbt_matrix_t bC=xbt_matrix_double_new_zeros(submatrix_size,submatrix_size);
228 gras_socket_t from,sock; /* to exchange data with my neighbor */
229 gras_socket_t master; /* for the barrier */
231 /* sockets for brodcast to other slave */
232 gras_socket_t socket_line[PROC_MATRIX_SIZE-1];
233 gras_socket_t socket_row[PROC_MATRIX_SIZE-1];
234 memset(socket_line,0,sizeof(socket_line));
235 memset(socket_row,0,sizeof(socket_row));
237 /* Init the GRAS's infrastructure */
238 gras_init(&argc, argv);
240 /* Create my master socket */
241 sock = gras_socket_server(atoi(argv[1]));
244 /* Register the known messages */
247 /* Recover my initialized Data and My Position*/
248 s_assignment_t assignment;
249 INFO2("Launch %s (port=%d); wait for my enrole message",argv[0],gras_os_myport());
251 gras_msg_wait(600,gras_msgtype_by_name("assignment"),&master,&assignment);
253 RETHROW0("Can't get my assignment from master : %s");
255 myline = assignment.linepos;
256 myrow = assignment.rowpos;
257 mydataA = assignment.A;
258 mydataB = assignment.B;
260 INFO2("Receive my pos (%d,%d) and assignment",myline,myrow);
262 /* Get my neighborhood from the assignment message (skipping myself) */
264 for (i=0,j=0 ; i<PROC_MATRIX_SIZE ; i++){
265 if (strcmp(gras_os_myname(),assignment.line[i]->name)) {
266 socket_line[j]=gras_socket_client(assignment.line[i]->name,
267 assignment.line[i]->port);
270 xbt_host_free(assignment.line[i]);
272 for (i=0,j=0 ; i<PROC_MATRIX_SIZE ; i++){
273 if (strcmp(gras_os_myname(),assignment.row[i]->name)) {
274 socket_row[j]=gras_socket_client(assignment.row[i]->name,
275 assignment.row[i]->port);
278 xbt_host_free(assignment.row[i]);
281 for (step=0; step<PROC_MATRIX_SIZE;step++) {
283 /* a line brodcast */
285 INFO2("LINE: step(%d) = Myline(%d). Broadcast my data.",step,myline);
286 for (l=0;l < PROC_MATRIX_SIZE-1 ;l++)
287 gras_msg_send(socket_row[l],
288 gras_msgtype_by_name("dataB"),
292 bB = xbt_matrix_new_sub(mydataB,
293 submatrix_size,submatrix_size,
298 gras_msg_wait(600,gras_msgtype_by_name("dataB"),&from,&bB);
300 RETHROW0("Can't get a data message from line : %s");
302 INFO3("LINE: step(%d) <> Myline(%d). Receive data from %s",step,myline,
303 gras_socket_peer_name(from));
308 INFO2("ROW: step(%d)=myrow(%d). Broadcast my data",step,myrow);
309 for (l=1;l < PROC_MATRIX_SIZE ;l++)
310 gras_msg_send(socket_line[l-1],gras_msgtype_by_name("dataA"), &mydataA);
312 bA = xbt_matrix_new_sub(mydataA,
313 submatrix_size,submatrix_size,
318 gras_msg_wait(1200,gras_msgtype_by_name("dataA"), &from,&bA);
320 RETHROW0("Can't get a data message from row : %s");
322 INFO3("ROW: step(%d)<>myrow(%d). Receive data from %s",step,myrow,
323 gras_socket_peer_name(from));
325 xbt_matrix_double_addmult(bA,bB,bC);
329 /* send Result to master */
331 result.linepos=myline;
335 gras_msg_send(master, gras_msgtype_by_name("result"),&result);
337 RETHROW0("Failed to send PING to server: %s");
339 INFO2(">>>>>>>> Result sent to %s:%d <<<<<<<<",
340 gras_socket_peer_name(master),gras_socket_peer_port(master));
341 /* Free the allocated resources, and shut GRAS down */
347 xbt_matrix_free(mydataA);
348 xbt_matrix_free(mydataB);
349 gras_socket_close(sock);
350 gras_socket_close(master);
351 gras_socket_close(from);
352 /* FIXME: Some of these sockets are "not known", no idea why *
353 for (l=0; l < PROC_MATRIX_SIZE-1; l++) {
355 gras_socket_close(socket_line[l]);
357 gras_socket_close(socket_row[l]);