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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
package com.mbien.opencl;
import com.mbien.opencl.CLMemory.Mem;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.junit.Test;
import static org.junit.Assert.*;
import static java.lang.System.*;
import static com.mbien.opencl.TestUtils.*;
import static com.sun.gluegen.runtime.BufferFactory.*;
/**
*
* @author Michael Bien
*/
public class CLConcurrencyTest {
@Test
public void testEvents() throws IOException {
out.println(" - - - event synchronisation test - - - ");
final int groupSize = 256;
final int elements = roundUp(groupSize, ONE_MB/SIZEOF_INT * 5); // 5MB per buffer
CLContext context = CLContext.create();
CLBuffer<ByteBuffer> clBufferA = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
CLBuffer<ByteBuffer> clBufferB = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
CLBuffer<ByteBuffer> clBufferC = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
CLBuffer<ByteBuffer> clBufferD = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
fillBuffer(clBufferA.buffer, 12345);
fillBuffer(clBufferB.buffer, 67890);
CLProgram program = context.createProgram(getClass().getResourceAsStream("testkernels.cl")).build();
CLKernel vectorAddKernel = program.createCLKernel("VectorAddGM")
.setArg(3, elements);
CLCommandQueue queue = context.getCLDevices()[0].createCommandQueue();
final CLEventList events = new CLEventList(2);
assertEquals(0, events.size());
queue.putWriteBuffer(clBufferA, false, events) // write A
.putWriteBuffer(clBufferB, false, events); // write B
assertEquals(2, events.size());
queue.putWaitForEvents(events, true);
events.release();
assertEquals(0, events.size());
vectorAddKernel.setArgs(clBufferA, clBufferB, clBufferC); // C = A+B
queue.put1DRangeKernel(vectorAddKernel, 0, elements, groupSize, events);
vectorAddKernel.setArgs(clBufferA, clBufferB, clBufferD); // D = A+B
queue.put1DRangeKernel(vectorAddKernel, 0, elements, groupSize, events);
assertEquals(2, events.size());
queue.putWaitForEvent(events, 0, false)
.putWaitForEvent(events, 1, true);
queue.putReadBuffer(clBufferC, false)
.putReadBuffer(clBufferD, true);
events.release();
checkIfEqual(clBufferC.buffer, clBufferD.buffer, elements);
context.release();
out.println("results are valid");
}
@Test
public void concurrencyTest() throws IOException, InterruptedException {
out.println(" - - - queue synchronisation test - - - ");
final int elements = ONE_MB/SIZEOF_INT * 10; // 20MB per buffer
CLContext context = CLContext.create();
CLDevice[] devices = context.getCLDevices();
if(devices.length < 2) {
out.println("aborting test... need at least 2 devices");
context.release();
return;
}
final CLBuffer<ByteBuffer> clBufferC = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
final CLBuffer<ByteBuffer> clBufferD = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
final CLBuffer<ByteBuffer> clBufferA1 = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
final CLBuffer<ByteBuffer> clBufferB1 = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
final CLBuffer<ByteBuffer> clBufferA2 = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
final CLBuffer<ByteBuffer> clBufferB2 = context.createByteBuffer(elements*SIZEOF_INT, Mem.READ_ONLY);
CLProgram program = context.createProgram(getClass().getResourceAsStream("testkernels.cl")).build();
final CLKernel vectorAddKernel1 = program.createCLKernel("VectorAddGM")
.setArg(3, elements);
final CLKernel vectorAddKernel2 = program.createCLKernel("VectorAddGM")
.setArg(3, elements);
int secondDevice = devices.length > 1 ? 1 : 0;
final CLCommandQueue queue1 = devices[0 ].createCommandQueue();
final CLCommandQueue queue2 = devices[secondDevice].createCommandQueue();
if(secondDevice > 0)
System.out.println("using two devices");
final QueueBarrier barrier = new QueueBarrier(2);
Thread thread1 = new Thread("C") {
@Override
public void run() {
fillBuffer(clBufferA1.buffer, 12345);
fillBuffer(clBufferB1.buffer, 67890);
// System.out.println("C buffer");
queue1.putWriteBuffer(clBufferA1, false) // write A
.putWriteBuffer(clBufferB1, true); // write B
// System.out.println("C args");
vectorAddKernel1.setArgs(clBufferA1, clBufferB1, clBufferC); // C = A+B
// System.out.println("C kernels");
CLEventList events1 = new CLEventList(2);
queue1.put1DRangeKernel(vectorAddKernel1, 0, elements, 256, events1)
.putReadBuffer(clBufferC, false, events1);
barrier.waitFor(queue1, events1);
}
};
Thread thread2 = new Thread("D") {
@Override
public void run() {
fillBuffer(clBufferA2.buffer, 12345);
fillBuffer(clBufferB2.buffer, 67890);
// System.out.println("D buffer");
queue2.putWriteBuffer(clBufferA2, false) // write A
.putWriteBuffer(clBufferB2, true); // write B
// System.out.println("D args");
vectorAddKernel2.setArgs(clBufferA2, clBufferB2, clBufferD); // D = A+B
// System.out.println("D kernels");
CLEventList events2 = new CLEventList(2);
queue2.put1DRangeKernel(vectorAddKernel2, 0, elements, 256, events2)
.putReadBuffer(clBufferD, false, events2);
barrier.waitFor(queue2, events2);
}
};
out.println("starting threads");
thread1.start();
thread2.start();
barrier.await();
out.println("done");
checkIfEqual(clBufferC.buffer, clBufferD.buffer, elements);
context.release();
// vectorAddKernel2.release();
out.println("results are valid");
}
}
|
