refactored JOCLTest into LowLevelBindingTest and HighLevelBindingTest.

moved listCLPlatforms() and getLowLevelBinding() from CLContext to CLPlatform.
added method to create CLPrograms from InputStreams and updated test.

1 files changed, 316 insertions, 0 deletions

diff --git a/test/com/mbien/opencl/LowLevelBindingTest.java b/test/com/mbien/opencl/LowLevelBindingTest.java
new file mode 100644
index 00000000..e5175129
--- /dev/null
+++ b/test/com/mbien/opencl/LowLevelBindingTest.java
@@ -0,0 +1,316 @@
+package com.mbien.opencl;
+
+import com.sun.gluegen.runtime.BufferFactory;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.Arrays;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import static org.junit.Assert.*;
+import static java.lang.System.*;
+import static com.mbien.opencl.TestUtils.*;
+
+/**
+ * Test testing the low level bindings.
+ * @author Michael Bien
+ */
+public class LowLevelBindingTest {
+
+    private final static String programSource =
+              " // OpenCL Kernel Function for element by element vector addition                                                \n"
+            + "__kernel void VectorAdd(__global const int* a, __global const int* b, __global int* c, int iNumElements) {       \n"
+            + "    // get index into global data array                                                                          \n"
+            + "    int iGID = get_global_id(0);                                                                                 \n"
+            + "    // bound check (equivalent to the limit on a 'for' loop for standard/serial C code                           \n"
+            + "    if (iGID >= iNumElements)  {                                                                                 \n"
+            + "        return;                                                                                                  \n"
+            + "    }                                                                                                            \n"
+            + "    // add the vector elements                                                                                   \n"
+            + "    c[iGID] = a[iGID] + b[iGID];                                                                                 \n"
+            + "}                                                                                                                \n"
+            + "__kernel void Test(__global const int* a, __global const int* b, __global int* c, int iNumElements) {            \n"
+            + "    // get index into global data array                                                                          \n"
+            + "    int iGID = get_global_id(0);                                                                                 \n"
+            + "    // bound check (equivalent to the limit on a 'for' loop for standard/serial C code                           \n"
+            + "    if (iGID >= iNumElements)  {                                                                                 \n"
+            + "        return;                                                                                                  \n"
+            + "    }                                                                                                            \n"
+            + "    c[iGID] = iGID;                                                                                              \n"
+            + "}                                                                                                                \n";
+
+
+    @BeforeClass
+    public static void setUpClass() throws Exception {
+        out.println("OS: " + System.getProperty("os.name"));
+        out.println("VM: " + System.getProperty("java.vm.name"));
+    }
+
+    @Test
+    public void lowLevelTest1() {
+
+        out.println(" - - - lowLevelTest; contextless binding - - - ");
+
+        int ret = CL.CL_SUCCESS;
+
+        CL cl = CLPlatform.getLowLevelBinding();
+
+        int[] intBuffer = new int[1];
+        // find all available OpenCL platforms
+        ret = cl.clGetPlatformIDs(0, null, 0, intBuffer, 0);
+        checkForError(ret);
+        out.println("#platforms: "+intBuffer[0]);
+
+        long[] platformId = new long[intBuffer[0]];
+        ret = cl.clGetPlatformIDs(platformId.length, platformId, 0, null, 0);
+        checkForError(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];
+            out.println("platform id: "+platform);
+
+            ret = cl.clGetPlatformInfo(platform, CL.CL_PLATFORM_PROFILE, bb.capacity(), bb, longBuffer, 0);
+            checkForError(ret);
+            out.println("    profile: "+new String(bb.array(), 0, (int)longBuffer[0]));
+
+            ret = cl.clGetPlatformInfo(platform, CL.CL_PLATFORM_VERSION, bb.capacity(), bb, longBuffer, 0);
+            checkForError(ret);
+            out.println("    version: "+new String(bb.array(), 0, (int)longBuffer[0]));
+
+            ret = cl.clGetPlatformInfo(platform, CL.CL_PLATFORM_NAME, bb.capacity(), bb, longBuffer, 0);
+            checkForError(ret);
+            out.println("    name: "+new String(bb.array(), 0, (int)longBuffer[0]));
+
+            ret = cl.clGetPlatformInfo(platform, CL.CL_PLATFORM_VENDOR, bb.capacity(), bb, longBuffer, 0);
+            checkForError(ret);
+            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);
+            checkForError(ret);
+            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);
+                checkForError(ret);
+                out.println("    device: "+new String(bb.array(), 0, (int)longBuffer[0]));
+
+                ret = cl.clGetDeviceInfo(device, CL.CL_DEVICE_TYPE, bb.capacity(), bb, longBuffer, 0);
+                checkForError(ret);
+                out.println("    type: " + CLDevice.Type.valueOf(bb.get()));
+                bb.rewind();
+
+            }
+
+        }
+
+    }
+
+    @Test
+    public void lowLevelTest2() {
+
+        out.println(" - - - lowLevelTest2; VectorAdd kernel - - - ");
+
+//        CreateContextCallback cb = new CreateContextCallback() {
+//            @Override
+//            public void createContextCallback(String errinfo, ByteBuffer private_info, long cb, Object user_data) {
+//                throw new RuntimeException("not yet implemented...");
+//            }
+//        };
+
+        long[] longArray = new long[1];
+        ByteBuffer bb = ByteBuffer.allocate(4096).order(ByteOrder.nativeOrder());
+
+        CL cl = CLPlatform.getLowLevelBinding();
+
+        int ret = CL.CL_SUCCESS;
+        int[] intArray = new int[1];
+
+        long context = cl.clCreateContextFromType(null, 0, CL.CL_DEVICE_TYPE_ALL, null, null, null, 0);
+        out.println("context handle: "+context);
+
+        ret = cl.clGetContextInfo(context, CL.CL_CONTEXT_DEVICES, 0, null, longArray, 0);
+        checkError("on clGetContextInfo", ret);
+
+        int sizeofLong = 8; // TODO sizeof long...
+        out.println("context created with " + longArray[0]/sizeofLong + " devices");
+
+        ret = cl.clGetContextInfo(context, CL.CL_CONTEXT_DEVICES, bb.capacity(), bb, null, 0);
+        checkError("on clGetContextInfo", ret);
+
+        for (int i = 0; i < longArray[0]/sizeofLong; i++) {
+            out.println("device id: "+bb.getLong());
+        }
+
+        long firstDeviceID = bb.getLong(0);
+
+        // Create a command-queue
+        long commandQueue = cl.clCreateCommandQueue(context, firstDeviceID, 0, intArray, 0);
+        checkError("on clCreateCommandQueue", intArray[0]);
+
+        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
+
+        out.println("allocateing buffers of size: "+globalWorkSize);
+
+        ByteBuffer srcA = BufferFactory.newDirectByteBuffer(globalWorkSize*BufferFactory.SIZEOF_INT);
+        ByteBuffer srcB = BufferFactory.newDirectByteBuffer(globalWorkSize*BufferFactory.SIZEOF_INT);
+        ByteBuffer dest = BufferFactory.newDirectByteBuffer(globalWorkSize*BufferFactory.SIZEOF_INT);
+
+        // TODO sizeof int ...
+        // Allocate the OpenCL buffer memory objects for source and result on the device GMEM
+        long devSrcA = cl.clCreateBuffer(context, CL.CL_MEM_READ_ONLY, srcA.capacity(), null, intArray, 0);
+        checkError("on clCreateBuffer", intArray[0]);
+        long devSrcB = cl.clCreateBuffer(context, CL.CL_MEM_READ_ONLY, srcB.capacity(), null, intArray, 0);
+        checkError("on clCreateBuffer", intArray[0]);
+        long devDst  = cl.clCreateBuffer(context, CL.CL_MEM_WRITE_ONLY, dest.capacity(), null, intArray, 0);
+        checkError("on clCreateBuffer", intArray[0]);
+
+
+        // Create the program
+        long program = cl.clCreateProgramWithSource(context, 1, new String[] {programSource}, new long[]{programSource.length()}, 0, intArray, 0);
+        checkError("on clCreateProgramWithSource", intArray[0]);
+
+        // Build the program
+        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, longArray, 0);
+        checkError("on clGetProgramInfo CL_PROGRAM_SOURCE", ret);
+        out.println("program source length (cl): "+longArray[0]);
+        out.println("program source length (java): "+programSource.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)longArray[0]));
+
+        // Check program status
+        Arrays.fill(longArray, 42);
+        bb.rewind();
+        ret = cl.clGetProgramBuildInfo(program, firstDeviceID, CL.CL_PROGRAM_BUILD_STATUS, bb.capacity(), bb, null, 0);
+        checkError("on clGetProgramBuildInfo1", ret);
+
+        out.println("program build status: " + CLProgram.Status.valueOf(bb.getInt(0)));
+        assertEquals("build status", CL.CL_BUILD_SUCCESS, bb.getInt(0));
+
+        // Read build log
+        ret = cl.clGetProgramBuildInfo(program, firstDeviceID, CL.CL_PROGRAM_BUILD_LOG, 0, null, longArray, 0);
+        checkError("on clGetProgramBuildInfo2", ret);
+        out.println("program log length: " + longArray[0]);
+
+        bb.rewind();
+        ret = cl.clGetProgramBuildInfo(program, firstDeviceID, CL.CL_PROGRAM_BUILD_LOG, bb.capacity(), bb, null, 0);
+        checkError("on clGetProgramBuildInfo3", ret);
+        out.println("log:\n" + new String(bb.array(), 0, (int)longArray[0]));
+
+        // Create the kernel
+        Arrays.fill(intArray, 42);
+        long kernel = cl.clCreateKernel(program, "VectorAdd", intArray, 0);
+        checkError("on clCreateKernel", intArray[0]);
+
+//        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,  wrap(elementCount));  checkError("on clSetKernelArg3", ret);
+
+        out.println("used device memory: "+ (srcA.capacity()+srcB.capacity()+dest.capacity())/1000000 +"MB");
+
+        // 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, dest.capacity(), dest, 0, null, 0, null, 0);
+        checkError("on clEnqueueReadBuffer", ret);
+
+        out.println("a+b=c result snapshot: ");
+        for(int i = 0; i < 10; i++)
+            out.print(dest.getInt()+", ");
+        out.println("...; "+dest.remaining()/BufferFactory.SIZEOF_INT + " more");
+
+
+        // cleanup
+        ret = cl.clReleaseCommandQueue(commandQueue);
+        checkError("on clReleaseCommandQueue", ret);
+
+        ret = cl.clReleaseMemObject(devSrcA);
+        checkError("on clReleaseMemObject", ret);
+        ret = cl.clReleaseMemObject(devSrcB);
+        checkError("on clReleaseMemObject", ret);
+        ret = cl.clReleaseMemObject(devDst);
+        checkError("on clReleaseMemObject", ret);
+
+        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);
+
+    }
+
+//    @Test
+    public void loadTest() {
+        //for memory leak detection; e.g watch out for "out of host memory" errors
+        out.println(" - - - loadTest - - - ");
+        for(int i = 0; i < 100; i++) {
+            out.println("###iteration "+i);
+            lowLevelTest2();
+        }
+    }
+
+    private ByteBuffer wrap(long value) {
+        return (ByteBuffer) BufferFactory.newDirectByteBuffer(8).putLong(value).rewind();
+    }
+
+    private final void checkForError(int ret) {
+        this.checkError("", ret);
+    }
+
+    private final void checkError(String msg, int ret) {
+        if(ret != CL.CL_SUCCESS)
+            throw new CLException(ret, msg);
+    }
+
+
+}
\ No newline at end of file