1 // Copyright (C) 2011-2015 CEA/DEN, EDF R&D, OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
25 #define EPSILON 0.00000001
31 int main(int argc, char**argv)
34 double *vector, sum=0., norm, etalon;
35 int rank, size, grank, gsize, rsize;
36 int vsize=20, lvsize, rlvsize;
37 int i, k1, k2, imin, imax, nb;
41 char port_name [MPI_MAX_PORT_NAME];
42 char port_name_clt [MPI_MAX_PORT_NAME];
43 std::string service = "SERVICE";
47 std::cout << "This test only works with openmpi implementation" << std::endl;
52 std::string sargv = argv[i];
53 if(sargv.find("-debug")!=std::string::npos)
55 else if(sargv.find("-vsize")!=std::string::npos)
56 vsize = atoi(argv[++i]);
59 MPI_Init( &argc, &argv );
61 MPI_Comm_size( MPI_COMM_WORLD, &size );
62 MPI_Comm_rank( MPI_COMM_WORLD, &rank );
64 MPI_Barrier(MPI_COMM_WORLD);
66 MPI_Errhandler_set(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
68 MPI_Open_port(MPI_INFO_NULL, port_name);
69 if ( MPI_Lookup_name((char*)service.c_str(), MPI_INFO_NULL, port_name_clt) == MPI_SUCCESS ) {
71 std::cout << "[" << rank << "] I am client: I get the service " << service << " !" << std::endl;
72 MPI_Close_port( port_name );
74 else if ( MPI_Publish_name((char*)service.c_str(), MPI_INFO_NULL, port_name) == MPI_SUCCESS ) {
76 std::cout << "[" << rank << "] I am server: I've managed to publish the service " << service << " !" << std::endl;
79 else if ( MPI_Lookup_name((char*)service.c_str(), MPI_INFO_NULL, port_name_clt) == MPI_SUCCESS ) {
81 std::cout << "[" << rank << "] I am client: I get the service " << service << " !" << std::endl;;
82 MPI_Close_port( port_name );
86 std::cout << "[" << rank << "] ERROR!!!" << std::endl;
93 while ( i != TIMEOUT ) {
95 if ( MPI_Lookup_name((char*)service.c_str(), MPI_INFO_NULL, port_name_clt) == MPI_SUCCESS ) {
97 std::cout << "[" << rank << "] I am client: I get the service " << service << " !" << std::endl;
102 if ( i == TIMEOUT ) {
104 std::cout << "[" << rank << "] Waiting too long exiting !" << std::endl;
109 MPI_Errhandler_set(MPI_COMM_WORLD, MPI_ERRORS_ARE_FATAL);
110 MPI_Bcast(&srv,1,MPI_INT,0,MPI_COMM_WORLD);
112 MPI_Comm_accept( port_name, MPI_INFO_NULL, 0, MPI_COMM_WORLD, &icom );
114 MPI_Comm_connect(port_name_clt, MPI_INFO_NULL, 0, MPI_COMM_WORLD, &icom );
116 MPI_Intercomm_merge(icom,!srv,&com);
118 MPI_Comm_rank( com, &grank );
119 MPI_Comm_size( com, &gsize );
122 lvsize = ((rank+1)*vsize) / size - (rank*vsize) / size;
123 vector = (double*)malloc(lvsize*sizeof(double));
124 indg = (int*)malloc(lvsize*sizeof(int));
125 rsize = gsize - size;
127 for(i=0;i<lvsize;i++){
128 indg[i] = (rank*vsize)/size + i;
133 vector[i] = 2. * sin( (rank*vsize)/size + i );
134 sum += vector[i]*vector[i];
139 MPI_Reduce(&sum,&norm,1,MPI_DOUBLE,MPI_SUM,0,MPI_COMM_WORLD);
143 std::cout << "[" << grank << "] norm=" << norm << std::endl;
147 for(i=0;i<rsize;i++){
148 rlvsize = ((i+1)*vsize) / rsize - (i*vsize) / rsize;
149 k1 = (i*vsize)/rsize;
150 k2 = ((i+1)*vsize)/rsize -1;
152 if( (k1 <= indg[lvsize-1]) && (k2 >= indg[0]) ){
154 if( indg[0] > imin ) imin = indg[0];
156 if( indg[lvsize-1] < imax) imax = indg[lvsize-1];
158 nb = imax - imin + 1;
159 MPI_Send( &nb, 1, MPI_INT, i+size, 100, com );
160 MPI_Send( vector+imin-indg[0], nb, MPI_DOUBLE, i+size, 200, com );
163 MPI_Recv( &nb, 1, MPI_INT, i, 100, com, &status );
164 MPI_Recv( vector+imin-indg[0], nb, MPI_DOUBLE, i, 200, com, &status );
173 for(i=0;i<lvsize;i++){
175 std::cout << "[" << rank << "] vector[" << i << "]=" << vector[i] << std::endl;
176 sum += vector[i]*vector[i];
178 MPI_Reduce(&sum,&norm,1,MPI_DOUBLE,MPI_SUM,0,MPI_COMM_WORLD);
182 std::cout << "[" << grank << "] norm=" << norm << std::endl;
189 MPI_Recv(&etalon, 1, MPI_DOUBLE,size,400,com, &status);
190 MPI_Send(&norm,1,MPI_DOUBLE, size, 300, com);
194 MPI_Send(&norm,1,MPI_DOUBLE, 0, 400, com);
195 MPI_Recv(&etalon, 1, MPI_DOUBLE,0,300,com, &status);
201 MPI_Comm_disconnect( &com );
203 MPI_Unpublish_name((char*)service.c_str(), MPI_INFO_NULL, port_name);
204 MPI_Close_port( port_name );
212 if(fabs(norm-etalon)/norm < EPSILON ){
214 std::cout << "OK" << std::endl;
219 std::cout << "KO" << std::endl;