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/*
* Created on Tuesday, May 03 2011
*/
package com.jogamp.opencl.util.concurrent;
import com.jogamp.common.nio.Buffers;
import com.jogamp.opencl.CLBuffer;
import com.jogamp.opencl.CLCommandQueue;
import com.jogamp.opencl.CLContext;
import com.jogamp.opencl.CLDevice;
import com.jogamp.opencl.CLKernel;
import com.jogamp.opencl.CLPlatform;
import com.jogamp.opencl.util.concurrent.CLQueueContext.CLSimpleQueueContext;
import com.jogamp.opencl.util.concurrent.CLQueueContextFactory.CLSimpleContextFactory;
import java.nio.IntBuffer;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import org.junit.Rule;
import org.junit.rules.Timeout;
import com.jogamp.opencl.util.CLMultiContext;
import java.nio.Buffer;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import static org.junit.Assert.*;
import static java.lang.System.*;
/**
*
* @author Michael Bien
*/
public class CLMultiContextTest {
@Rule
public Timeout methodTimeout= new Timeout(10000);
@Test
public void createMultiContextTest() {
CLMultiContext mc = CLMultiContext.create(CLPlatform.listCLPlatforms());
try{
List<CLContext> contexts = mc.getContexts();
List<CLDevice> devices = mc.getDevices();
assertFalse(contexts.isEmpty());
assertFalse(devices.isEmpty());
for (CLContext context : contexts) {
out.println(context);
}
for (CLDevice device : devices) {
out.println(device);
}
}finally{
mc.release();
}
}
private final static String programSource =
"kernel void compute(global int* array, int numElements) { \n"
+ " int index = get_global_id(0); \n"
+ " if (index >= numElements) { \n"
+ " return; \n"
+ " } \n"
+ " array[index]++; \n"
+ "} \n";
private final class CLTestTask implements CLTask<CLSimpleQueueContext, Buffer> {
private final Buffer data;
public CLTestTask(Buffer buffer) {
this.data = buffer;
}
public Buffer execute(CLSimpleQueueContext qc) {
CLCommandQueue queue = qc.getQueue();
CLContext context = qc.getCLContext();
CLKernel kernel = qc.getKernel("compute");
CLBuffer<Buffer> buffer = null;
try{
buffer = context.createBuffer(data);
int gws = buffer.getCLCapacity();
kernel.putArg(buffer).putArg(gws).rewind();
queue.putWriteBuffer(buffer, true);
queue.put1DRangeKernel(kernel, 0, gws, 0);
queue.putReadBuffer(buffer, true);
}finally{
if(buffer != null) {
buffer.release();
}
}
return data;
}
}
@Test
public void commandQueuePoolTest() throws InterruptedException, ExecutionException {
CLMultiContext mc = CLMultiContext.create(CLPlatform.listCLPlatforms());
try {
CLSimpleContextFactory factory = CLQueueContextFactory.createSimple(programSource);
CLCommandQueuePool<CLSimpleQueueContext> pool = CLCommandQueuePool.create(factory, mc);
assertTrue(pool.getSize() > 0);
final int slice = 64;
final int tasksPerQueue = 10;
final int taskCount = pool.getSize() * tasksPerQueue;
IntBuffer data = Buffers.newDirectIntBuffer(slice*taskCount);
List<CLTestTask> tasks = new ArrayList<CLTestTask>(taskCount);
for (int i = 0; i < taskCount; i++) {
IntBuffer subBuffer = Buffers.slice(data, i*slice, slice);
assertEquals(slice, subBuffer.capacity());
tasks.add(new CLTestTask(subBuffer));
}
out.println("invoking "+tasks.size()+" tasks on "+pool.getSize()+" queues");
// blocking invoke
pool.invokeAll(tasks);
checkBuffer(1, data);
// submit blocking emediatly
for (CLTestTask task : tasks) {
pool.submit(task).get();
}
checkBuffer(2, data);
// submitAll using futures
List<Future<Buffer>> futures = pool.submitAll(tasks);
for (Future<Buffer> future : futures) {
future.get();
}
checkBuffer(3, data);
// switching contexts using different program
factory = CLQueueContextFactory.createSimple(programSource.replaceAll("\\+\\+", "--"));
pool.switchContext(factory);
pool.invokeAll(tasks);
checkBuffer(2, data);
pool.release();
}finally{
mc.release();
}
}
private void checkBuffer(int expected, IntBuffer data) {
while(data.hasRemaining()) {
assertEquals(expected, data.get());
}
data.rewind();
}
}
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