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-rw-r--r--test/com/mbien/opencl/JOCLTest.java110
1 files changed, 96 insertions, 14 deletions
diff --git a/test/com/mbien/opencl/JOCLTest.java b/test/com/mbien/opencl/JOCLTest.java
index 3ed51cbf..6da063ca 100644
--- a/test/com/mbien/opencl/JOCLTest.java
+++ b/test/com/mbien/opencl/JOCLTest.java
@@ -1,8 +1,10 @@
package com.mbien.opencl;
+import com.sun.gluegen.runtime.BufferFactory;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Arrays;
+import java.util.Random;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
@@ -107,8 +109,7 @@ public class JOCLTest {
// };
long[] longBuffer = new long[1];
- ByteBuffer bb = ByteBuffer.allocate(1024);
- bb.order(ByteOrder.nativeOrder());
+ ByteBuffer bb = ByteBuffer.allocate(4096).order(ByteOrder.nativeOrder());
CL cl = CLContext.getLowLevelBinding();
@@ -138,20 +139,20 @@ public class JOCLTest {
long commandQueue = cl.clCreateCommandQueue(context, firstDeviceID, 0, intArray, 0);
checkError("on clCreateCommandQueue", intArray[0]);
- int iNumElements = 11444777; // Length of float arrays to process (odd # for illustration)
- int szLocalWorkSize = 256; // set and log Global and Local work size dimensions
- int szGlobalWorkSize = roundUp(szLocalWorkSize, iNumElements); // rounded up to the nearest multiple of the LocalWorkSize
+ int elementCount = 11444777; // Length of float arrays to process (odd # for illustration)
+ int localWorkSize = 256; // set and log Global and Local work size dimensions
+ int globalWorkSize = roundUp(localWorkSize, elementCount); // rounded up to the nearest multiple of the LocalWorkSize
int sizeofFloat = 4; // TODO sizeof float ...
-
+
// Allocate the OpenCL buffer memory objects for source and result on the device GMEM
- long cmDevSrcA = cl.clCreateBuffer(context, CL.CL_MEM_READ_ONLY, sizeofFloat * szGlobalWorkSize, null, intArray, 0);
+ long devSrcA = cl.clCreateBuffer(context, CL.CL_MEM_READ_ONLY, sizeofFloat * globalWorkSize, null, intArray, 0);
checkError("on clCreateBuffer", intArray[0]);
- long cmDevSrcB = cl.clCreateBuffer(context, CL.CL_MEM_READ_ONLY, sizeofFloat * szGlobalWorkSize, null, intArray, 0);
+ long devSrcB = cl.clCreateBuffer(context, CL.CL_MEM_READ_ONLY, sizeofFloat * globalWorkSize, null, intArray, 0);
checkError("on clCreateBuffer", intArray[0]);
- long cmDevDst = cl.clCreateBuffer(context, CL.CL_MEM_WRITE_ONLY, sizeofFloat * szGlobalWorkSize, null, intArray, 0);
+ long devDst = cl.clCreateBuffer(context, CL.CL_MEM_WRITE_ONLY, sizeofFloat * globalWorkSize, null, intArray, 0);
checkError("on clCreateBuffer", intArray[0]);
-
- String src =
+
+ String src =
" // OpenCL Kernel Function for element by element vector addition \n"
+ "__kernel void VectorAdd(__global const float* a, __global const float* b, __global float* c, int iNumElements) { \n"
+ " // get index into global data array \n"
@@ -168,11 +169,27 @@ public class JOCLTest {
// Create the program
long program = cl.clCreateProgramWithSource(context, 1, new String[] {src}, new long[]{src.length()}, 0, intArray, 0);
checkError("on clCreateProgramWithSource", intArray[0]);
-
+
// Build the program
- ret = cl.clBuildProgram(program, new long[] { firstDeviceID }, null, null, null);
+ ret = cl.clBuildProgram(program, null, null, null, null);
checkError("on clBuildProgram", ret);
+ // Read program infos
+ bb.rewind();
+ ret = cl.clGetProgramInfo(program, CL.CL_PROGRAM_NUM_DEVICES, bb.capacity(), bb, null, 0);
+ checkError("on clGetProgramInfo1", ret);
+ out.println("program associated with "+bb.getInt(0)+" device(s)");
+
+ ret = cl.clGetProgramInfo(program, CL.CL_PROGRAM_SOURCE, 0, bb, longBuffer, 0);
+ checkError("on clGetProgramInfo CL_PROGRAM_SOURCE", ret);
+ out.println("program source length (cl): "+longBuffer[0]);
+ out.println("program source length (java): "+src.length());
+
+ bb.rewind();
+ ret = cl.clGetProgramInfo(program, CL.CL_PROGRAM_SOURCE, bb.capacity(), bb, null, 0);
+ checkError("on clGetProgramInfo CL_PROGRAM_SOURCE", ret);
+ out.println("program source:\n"+new String(bb.array(), 0, (int)longBuffer[0]));
+
// Check program status
Arrays.fill(longBuffer, 42);
bb.rewind();
@@ -194,14 +211,79 @@ public class JOCLTest {
out.println("log:\n" + new String(bb.array(), 0, (int)longBuffer[0]));
// Create the kernel
+ Arrays.fill(intArray, 42);
long kernel = cl.clCreateKernel(program, "VectorAdd", intArray, 0);
checkError("on clCreateKernel", intArray[0]);
-
+
+
+ ByteBuffer srcA = BufferFactory.newDirectByteBuffer(globalWorkSize*BufferFactory.SIZEOF_FLOAT);
+ ByteBuffer srcB = BufferFactory.newDirectByteBuffer(globalWorkSize*BufferFactory.SIZEOF_FLOAT);
+ ByteBuffer dst = BufferFactory.newDirectByteBuffer(globalWorkSize*BufferFactory.SIZEOF_FLOAT);
+ ByteBuffer elementCountBuffer = BufferFactory.newDirectByteBuffer(BufferFactory.SIZEOF_INT);
+ elementCountBuffer.putInt(elementCount);
+
+ srcA.limit(elementCount*BufferFactory.SIZEOF_FLOAT);
+ srcB.limit(elementCount*BufferFactory.SIZEOF_FLOAT);
+
+ fillBuffer(srcA, 23456);
+ fillBuffer(srcB, 46987);
+
+ // Set the Argument values
+ ret = cl.clSetKernelArg(kernel, 0, BufferFactory.SIZEOF_LONG, wrap(devSrcA)); checkError("on clSetKernelArg0", ret);
+ ret = cl.clSetKernelArg(kernel, 1, BufferFactory.SIZEOF_LONG, wrap(devSrcB)); checkError("on clSetKernelArg1", ret);
+ ret = cl.clSetKernelArg(kernel, 2, BufferFactory.SIZEOF_LONG, wrap(devDst)); checkError("on clSetKernelArg2", ret);
+ ret = cl.clSetKernelArg(kernel, 3, BufferFactory.SIZEOF_INT, elementCountBuffer); checkError("on clSetKernelArg3", ret);
+
+ // Asynchronous write of data to GPU device
+ ret = cl.clEnqueueWriteBuffer(commandQueue, devSrcA, CL.CL_FALSE, 0, srcA.capacity(), srcA, 0, null, 0, null, 0);
+ checkError("on clEnqueueWriteBuffer", ret);
+ ret = cl.clEnqueueWriteBuffer(commandQueue, devSrcB, CL.CL_FALSE, 0, srcB.capacity(), srcB, 0, null, 0, null, 0);
+ checkError("on clEnqueueWriteBuffer", ret);
+
+ // Launch kernel
+ ret = cl.clEnqueueNDRangeKernel(commandQueue, kernel, 1, null, 0,
+ new long[]{ globalWorkSize }, 0,
+ new long[]{ localWorkSize }, 0, 0,
+ null, 0,
+ null, 0);
+ checkError("on clEnqueueNDRangeKernel", ret);
+
+ // Synchronous/blocking read of results
+ ret = cl.clEnqueueReadBuffer(commandQueue, devDst, CL.CL_TRUE, 0, BufferFactory.SIZEOF_FLOAT * globalWorkSize, dst, 0, null, 0, null, 0);
+ checkError("on clEnqueueReadBuffer", ret);
+
+// for(int i = 0; i < 50; i++)
+// System.out.println(dst.getFloat());
+
+ // cleanup
+ ret = cl.clReleaseProgram(program);
+ checkError("on clReleaseProgram", ret);
+
+ ret = cl.clReleaseKernel(kernel);
+ checkError("on clReleaseKernel", ret);
+
+ ret = cl.clUnloadCompiler();
+ checkError("on clUnloadCompiler", ret);
+
ret = cl.clReleaseContext(context);
checkError("on clReleaseContext", ret);
}
+ private void fillBuffer(ByteBuffer buffer, int seed) {
+
+ Random rnd = new Random(seed);
+
+ while(buffer.remaining() != 0)
+ buffer.putFloat(rnd.nextFloat());
+
+ buffer.rewind();
+ }
+
+ private ByteBuffer wrap(long value) {
+ return (ByteBuffer)ByteBuffer.allocateDirect(8).order(ByteOrder.nativeOrder()).putLong(value).rewind();
+ }
+
private String getBuildStatus(int status) {
switch(status) {
case CL.CL_BUILD_SUCCESS:
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 18:32:11 +0000