1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
package mpi.threads ;
import mpi.*;
import java.util.Arrays;
public class MultithreadedComm {
int DATA_SIZE=100;
public MultithreadedComm() {
}
/* FIXME: this test is still to be written */
public MultithreadedComm(String args[]) throws Exception {
MPI.Init(args);
Thread threadA = null ;
Thread threadB = null;
Comm comm0, comm1, comm2, comm3 ;
int me = MPI.COMM_WORLD.Rank() ;
int size = MPI.COMM_WORLD.Size() ;
int numOfProcessors = MPI.NUM_OF_PROCESSORS ;
final int intArray [] = new int[DATA_SIZE];
final int intArray2 [] = new int[DATA_SIZE];
final int intReadArray [] = new int[DATA_SIZE];
final int intReadArray2 [] = new int[DATA_SIZE];
for(int i =0 ; i<DATA_SIZE ; i++) {
intArray[i] = (i+1) + 1000 ;
intArray2[i] = (i+1) + 2000 ;
}
if(me == 0) {
Runnable senderThreadA = new Runnable() {
public void run() {
int tag = 1000 ;
for(int j=0 ; j<500 ; j++) {
MPI.COMM_WORLD.Send(intArray,0,DATA_SIZE,MPI.INT,1,tag++);
}
}
};
threadA = new Thread(senderThreadA);
threadA.start();
threadA.join();
MPI.COMM_WORLD.Barrier();
} else if (me == 1) {
Runnable receiverThreadA = new Runnable() {
public void run() {
int tag = 1000 ;
for(int j=0 ; j<500 ; j++) {
for(int k=0 ; k<DATA_SIZE ; k++) {
intReadArray[k] = 0;
}
MPI.COMM_WORLD.Recv(intReadArray,0,DATA_SIZE,MPI.INT,0,tag++);
if(Arrays.equals(intArray, intReadArray)) {
//System.out.println(" Thread A passed ");
}
else {
System.out.println(" Thread A failed ");
}
}
}
};
Runnable receiverThreadB = new Runnable() {
public void run() {
MPI.COMM_WORLD.Barrier() ;
}
};
threadA = new Thread(receiverThreadA);
threadB = new Thread(receiverThreadB);
threadB.start();
threadA.start();
threadA.join();
threadB.join();
}
MPI.COMM_WORLD.Barrier();
if(MPI.COMM_WORLD.Rank() == 0) {
System.out.println("MultithreadedComm TEST Completed");
}
MPI.Finalize();
}
public static void main(String args[]) throws Exception{
MultithreadedComm test = new MultithreadedComm(args);
}
}
|
