gpu-compute: AMD's baseline GPU model

1 files changed, 332 insertions, 0 deletions

diff --git a/tests/test-progs/gpu-hello/src/gpu-hello.cpp b/tests/test-progs/gpu-hello/src/gpu-hello.cpp
new file mode 100755
index 000000000..b6fff6e32
--- /dev/null
+++ b/tests/test-progs/gpu-hello/src/gpu-hello.cpp
@@ -0,0 +1,332 @@
+/*
+ * Copyright (c) 2015 Advanced Micro Devices, Inc.
+ * All rights reserved.
+ *
+ * For use for simulation and test purposes only
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Author: Marc Orr, Brad Beckmann
+ */
+
+#include <CL/cl.h>
+#include <malloc.h>
+
+#include <cstdio>
+#include <cstring>
+#include <fstream>
+#include <string>
+
+#define SUCCESS 0
+#define FAILURE 1
+
+// OpenCL datastructures
+cl_context       context;
+cl_device_id     *devices;
+cl_command_queue commandQueue;
+cl_program       program;
+cl_kernel        readKernel;
+
+// Application datastructures
+const int CACHE_LINE_SIZE = 64;
+size_t grid_size = 512;
+size_t work_group_size = 256;
+
+// arguments
+const int code_size = 5;
+const char *code = "hello";
+int *keys;
+char *msg;
+int chars_decoded = 0;
+
+/*
+    Setup data structures for application/algorithm
+*/
+int
+setupDataStructs()
+{
+    msg = (char *)memalign(CACHE_LINE_SIZE, (grid_size + 1) * sizeof(char));
+    if(msg == NULL) {
+        printf("%s:%d: error: %s\n", __FILE__, __LINE__,
+               "could not allocate host buffers\n");
+       exit(-1);
+    }
+    msg[grid_size] = '\0';
+
+    keys = (int *)memalign(CACHE_LINE_SIZE, code_size * sizeof(int));
+    keys[0] = 23;
+    keys[1] = 0;
+    keys[2] = 0;
+    keys[3] = 0;
+    keys[4] = 0;
+
+    return SUCCESS;
+}
+
+/* Setup OpenCL data structures */
+int
+setupOpenCL()
+{
+    cl_int status = 0;
+    size_t deviceListSize;
+
+    // 1. Get platform
+    cl_uint numPlatforms;
+    cl_platform_id platform = NULL;
+    status = clGetPlatformIDs(0, NULL, &numPlatforms);
+    if (status != CL_SUCCESS) {
+        printf("Error: Getting Platforms. (clGetPlatformsIDs)\n");
+        return FAILURE;
+    }
+
+    if (numPlatforms > 0) {
+        cl_platform_id *platforms = new cl_platform_id[numPlatforms];
+        status = clGetPlatformIDs(numPlatforms, platforms, NULL);
+        if (status != CL_SUCCESS) {
+            printf("Error: Getting Platform Ids. (clGetPlatformsIDs)\n");
+            return FAILURE;
+        }
+        for (int i = 0; i < numPlatforms; ++i) {
+            char pbuff[100];
+            status = clGetPlatformInfo(platforms[i], CL_PLATFORM_VENDOR,
+                                       sizeof(pbuff), pbuff, NULL);
+            if (status != CL_SUCCESS) {
+                printf("Error: Getting Platform Info.(clGetPlatformInfo)\n");
+                return FAILURE;
+            }
+            platform = platforms[i];
+            if (!strcmp(pbuff, "Advanced Micro Devices, Inc.")) {
+                break;
+            }
+        }
+        delete platforms;
+    }
+
+    if(NULL == platform) {
+        printf("NULL platform found so Exiting Application.\n");
+        return FAILURE;
+    }
+
+    // 2. create context from platform
+    cl_context_properties cps[3] =
+        {CL_CONTEXT_PLATFORM, (cl_context_properties)platform, 0};
+    context = clCreateContextFromType(cps, CL_DEVICE_TYPE_GPU, NULL, NULL,
+                                      &status);
+    if (status != CL_SUCCESS) {
+        printf("Error: Creating Context. (clCreateContextFromType)\n");
+        return FAILURE;
+    }
+
+    // 3. Get device info
+    // 3a. Get # of devices
+    status = clGetContextInfo(context, CL_CONTEXT_DEVICES, 0, NULL,
+                              &deviceListSize);
+    if (status != CL_SUCCESS) {
+        printf("Error: Getting Context Info (1st clGetContextInfo)\n");
+        return FAILURE;
+    }
+
+    // 3b. Get the device list data
+    devices = (cl_device_id *)malloc(deviceListSize);
+    if (devices == 0) {
+        printf("Error: No devices found.\n");
+        return FAILURE;
+    }
+    status = clGetContextInfo(context, CL_CONTEXT_DEVICES, deviceListSize,
+                              devices, NULL);
+    if (status != CL_SUCCESS) {
+        printf("Error: Getting Context Info (2nd clGetContextInfo)\n");
+        return FAILURE;
+    }
+
+    // 4. Create command queue for device
+    commandQueue = clCreateCommandQueue(context, devices[0], 0, &status);
+    if (status != CL_SUCCESS) {
+        printf("Creating Command Queue. (clCreateCommandQueue)\n");
+        return FAILURE;
+    }
+
+    const char *source = "dummy text";
+
+    size_t sourceSize[] = {strlen(source)};
+
+    // 5b. Register the kernel with the runtime
+    program = clCreateProgramWithSource(context, 1, &source, sourceSize,
+                                        &status);
+    if (status != CL_SUCCESS) {
+      printf("Error: Loading kernel (clCreateProgramWithSource)\n");
+      return FAILURE;
+    }
+
+    status = clBuildProgram(program, 1, devices, NULL, NULL, NULL);
+    if (status != CL_SUCCESS) {
+        printf("Error: Building kernel (clBuildProgram)\n");
+        return FAILURE;
+    }
+
+    readKernel = clCreateKernel(program, "read_kernel", &status);
+    if (status != CL_SUCCESS) {
+        printf("Error: Creating readKernel from program. (clCreateKernel)\n");
+        return FAILURE;
+    }
+
+    return SUCCESS;
+}
+
+
+/* Run kernels */
+int
+runCLKernel(cl_kernel kernel)
+{
+    cl_int   status;
+    cl_event event;
+    size_t globalThreads[1] = {grid_size};
+    size_t localThreads[1] = {work_group_size};
+
+    // 1. Set arguments
+    // 1a. code size
+    size_t code_size = strlen(code);
+    status = clSetKernelArg(kernel, 0, sizeof(size_t), &code_size);
+    if (status != CL_SUCCESS) {
+        printf("Error: Setting kernel argument. (code_size)\n");
+        return FAILURE;
+    }
+
+    // 1b. code
+    status = clSetKernelArg(kernel, 1, sizeof(char *), (void *)&code);
+    if (status != CL_SUCCESS) {
+        printf("Error: Setting kernel argument. (code_in)\n");
+        return FAILURE;
+    }
+
+    // 1c. keys
+    printf("keys = %p, &keys = %p, keys[0] = %d\n", keys, &keys, keys[0]);
+    status = clSetKernelArg(kernel, 2, sizeof(int *), (void *)&keys);
+    if (status != CL_SUCCESS) {
+        printf("Error: Setting kernel argument. (key_arr)\n");
+        return FAILURE;
+    }
+
+    // 1d. msg
+    status = clSetKernelArg(kernel, 3, sizeof(char *), (void *)&msg);
+    if (status != CL_SUCCESS) {
+        printf("Error: Setting kernel argument. (memOut)\n");
+        return FAILURE;
+    }
+
+    // 1e. chars_decoded
+    int *chars_decoded_ptr = &chars_decoded;
+    status = clSetKernelArg(kernel, 4, sizeof(int *),
+                            (void *)&chars_decoded_ptr);
+    if (status != CL_SUCCESS) {
+        printf("Error: Setting kernel argument. (memOut)\n");
+        return FAILURE;
+    }
+
+    // 2. Launch kernel
+    status = clEnqueueNDRangeKernel(commandQueue, kernel, 1, NULL,
+                                    globalThreads, localThreads, 0, NULL,
+                                    &event);
+    if (status != CL_SUCCESS) {
+        printf("Error: Enqueue failed. (clEnqueueNDRangeKernel)\n");
+        return FAILURE;
+    }
+
+    // 3. Wait for the kernel
+    status = clWaitForEvents(1, &event);
+    if (status != CL_SUCCESS) {
+        printf("Error: Waiting for kernel run to finish. (clWaitForEvents)\n");
+        return FAILURE;
+    }
+
+    // 4. Cleanup
+    status = clReleaseEvent(event);
+    if (status != CL_SUCCESS) {
+        printf("Error: Release event object. (clReleaseEvent)\n");
+        return FAILURE;
+    }
+
+    return SUCCESS;
+}
+
+
+/* Release OpenCL resources (Context, Memory etc.) */
+int
+cleanupCL()
+{
+    cl_int status;
+    status = clReleaseKernel(readKernel);
+    if (status != CL_SUCCESS) {
+        printf("Error: In clReleaseKernel \n");
+        return FAILURE;
+    }
+    status = clReleaseProgram(program);
+    if (status != CL_SUCCESS) {
+        printf("Error: In clReleaseProgram\n");
+        return FAILURE;
+    }
+    status = clReleaseCommandQueue(commandQueue);
+    if (status != CL_SUCCESS) {
+        printf("Error: In clReleaseCommandQueue\n");
+        return FAILURE;
+    }
+    status = clReleaseContext(context);
+    if (status != CL_SUCCESS) {
+        printf("Error: In clReleaseContext\n");
+        return FAILURE;
+    }
+
+    return SUCCESS;
+}
+
+int
+main(int argc, char * argv[])
+{
+    // Initialize Host application
+    if (setupDataStructs() != SUCCESS) {
+        return FAILURE;
+    }
+
+    // Initialize OpenCL resources
+    if (setupOpenCL() != SUCCESS) {
+        return FAILURE;
+    }
+
+    // Run the CL program
+    if (runCLKernel(readKernel) != SUCCESS) {
+        return FAILURE;
+    }
+    printf("the gpu says:\n");
+    printf("%s\n", msg);
+
+    // Releases OpenCL resources
+    if (cleanupCL()!= SUCCESS) {
+        return FAILURE;
+    }
+
+    return SUCCESS;
+}