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package com.mbien.opencl;
import com.mbien.opencl.impl.CLImpl;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Arrays;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
/**
*
* @author Michael Bien
*/
public class JOCLTest {
public JOCLTest() {
}
@Before
public void setUpClass() throws Exception {
}
@After
public void tearDownClass() throws Exception {
}
// @Test
public void highLevelTest() {
System.out.println(" - - - highLevelTest - - - ");
CLPlatform[] clPlatforms = CLContext.listCLPlatforms();
for (CLPlatform platform : clPlatforms) {
System.out.println("platform info:");
System.out.println("name: "+platform.getName());
System.out.println("profile: "+platform.getProfile());
System.out.println("version: "+platform.getVersion());
System.out.println("vendor: "+platform.getVendor());
CLDevice[] clDevices = platform.listCLDevices();
for (CLDevice device : clDevices) {
System.out.println("device info:");
System.out.println("name: "+device.getName());
System.out.println("profile: "+device.getProfile());
System.out.println("vendor: "+device.getVendor());
System.out.println("type: "+device.getType());
System.out.println("global mem: "+device.getGlobalMemSize()/(1024*1024)+" MB");
System.out.println("local mem: "+device.getLocalMemSize()/1024+" KB");
System.out.println("clock: "+device.getMaxClockFrequency()+" MHz");
System.out.println("max work group size: "+device.getMaxWorkGroupSize());
System.out.println("max compute units: "+device.getMaxComputeUnits());
System.out.println("extensions: "+device.getExtensions());
}
}
CLContext ctx = CLContext.create();
CLDevice device = ctx.getMaxFlopsDevice();
System.out.println("max FLOPS device: " + device);
ctx.release();
}
@Test
public void lowLevelTest() {
System.out.println(" - - - lowLevelTest - - - ");
// already loaded
System.out.print("loading native libs...");
System.loadLibrary("gluegen-rt");
System.loadLibrary("jocl");
System.out.println("done");
CreateContextCallback cb = new CreateContextCallback() {
@Override
public void createContextCallback(String errinfo, ByteBuffer private_info, long cb, Object user_data) {
throw new RuntimeException(errinfo);
}
};
System.out.println("creating OpenCL context");
int ret = 0;
CL cl = new CLImpl();
int[] intBuffer = new int[1];
// find all available OpenCL platforms
ret = cl.clGetPlatformIDs(0, null, 0, intBuffer, 0);
assertEquals(CL.CL_SUCCESS, ret);
System.out.println("#platforms: "+intBuffer[0]);
long[] platformId = new long[intBuffer[0]];
ret = cl.clGetPlatformIDs(platformId.length, platformId, 0, null, 0);
assertEquals(CL.CL_SUCCESS, ret);
// print platform info
long[] longBuffer = new long[1];
ByteBuffer bb = ByteBuffer.allocate(128);
bb.order(ByteOrder.nativeOrder());
for (int i = 0; i < platformId.length; i++) {
long platform = platformId[i];
System.out.println("platform id: "+platform);
ret = cl.clGetPlatformInfo(platform, CL.CL_PLATFORM_PROFILE, bb.capacity(), bb, longBuffer, 0);
assertEquals(CL.CL_SUCCESS, ret);
System.out.println(" profile: "+new String(bb.array(), 0, (int)longBuffer[0]));
ret = cl.clGetPlatformInfo(platform, CL.CL_PLATFORM_VERSION, bb.capacity(), bb, longBuffer, 0);
assertEquals(CL.CL_SUCCESS, ret);
System.out.println(" version: "+new String(bb.array(), 0, (int)longBuffer[0]));
ret = cl.clGetPlatformInfo(platform, CL.CL_PLATFORM_NAME, bb.capacity(), bb, longBuffer, 0);
assertEquals(CL.CL_SUCCESS, ret);
System.out.println(" name: "+new String(bb.array(), 0, (int)longBuffer[0]));
ret = cl.clGetPlatformInfo(platform, CL.CL_PLATFORM_VENDOR, bb.capacity(), bb, longBuffer, 0);
assertEquals(CL.CL_SUCCESS, ret);
System.out.println(" vendor: "+new String(bb.array(), 0, (int)longBuffer[0]));
//find all devices
ret = cl.clGetDeviceIDs(platform, CL.CL_DEVICE_TYPE_ALL, 0, null, 0, intBuffer, 0);
assertEquals(CL.CL_SUCCESS, ret);
System.out.println("#devices: "+intBuffer[0]);
long[] devices = new long[intBuffer[0]];
ret = cl.clGetDeviceIDs(platform, CL.CL_DEVICE_TYPE_ALL, devices.length, devices, 0, null, 0);
//print device info
for (int j = 0; j < devices.length; j++) {
long device = devices[j];
ret = cl.clGetDeviceInfo(device, CL.CL_DEVICE_NAME, bb.capacity(), bb, longBuffer, 0);
assertEquals(CL.CL_SUCCESS, ret);
System.out.println(" device: "+new String(bb.array(), 0, (int)longBuffer[0]));
ret = cl.clGetDeviceInfo(device, CL.CL_DEVICE_TYPE, bb.capacity(), bb, longBuffer, 0);
assertEquals(CL.CL_SUCCESS, ret);
System.out.println(" type: " + CLDevice.Type.valueOf(bb.get()));
bb.rewind();
}
}
Arrays.fill(longBuffer, 0);
long context = cl.clCreateContextFromType(null, 0, CL.CL_DEVICE_TYPE_ALL, cb, null, null, 0);
System.out.println("context handle: "+context);
ret = cl.clGetContextInfo(context, CL.CL_CONTEXT_DEVICES, 0, null, longBuffer, 0);
assertEquals(CL.CL_SUCCESS, ret);
System.out.println("CL_CONTEXT_DEVICES result: "+longBuffer[0]);
cl.clReleaseContext(context);
}
}
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