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
|
package com.mbien.opencl;
import com.mbien.opencl.CLBuffer.Mem;
import com.mbien.opencl.CLCommandQueue.Mode;
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 elements = 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.getCLKernel("VectorAddGM")
.setArg(3, elements);
CLCommandQueue queue = context.getCLDevices()[0].createCommandQueue();
final CLEventList events = new CLEventList(2);
assertEquals(0, events.size());
// asynchronous write of data to GPU device, blocking read later to get the computed results back.
queue.putWriteBuffer(clBufferA, events, false) // write A
.putWriteBuffer(clBufferB, events, false); // write B
assertEquals(2, events.size());
queue.putWaitForEvents(events);
events.release();
assertEquals(0, events.size());
vectorAddKernel.setArgs(clBufferA, clBufferB, clBufferC); // C = A+B
queue.put1DRangeKernel(vectorAddKernel, events, 0, elements, 256);
vectorAddKernel.setArgs(clBufferA, clBufferB, clBufferD); // D = A+B
queue.put1DRangeKernel(vectorAddKernel, events, 0, elements, 256);
assertEquals(2, events.size());
queue.putWaitForEvent(events, 0)
.putWaitForEvent(events, 1);
queue.putReadBuffer(clBufferC, false)
.putReadBuffer(clBufferD, true);
events.release();
checkIfEqual(clBufferC.buffer, clBufferD.buffer, elements);
context.release();
out.println("results are valid");
}
}
|
