opencl printf test
This commit is contained in:
Blaise Tine
173
tests/opencl/printf/main.cc
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173
tests/opencl/printf/main.cc
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <math.h>
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#include <CL/opencl.h>
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#include <unistd.h>
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#include <string.h>
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#include <chrono>
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#define KERNEL_NAME "test_printf"
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#define CL_CHECK(_expr) \
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do { \
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cl_int _err = _expr; \
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if (_err == CL_SUCCESS) \
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break; \
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printf("OpenCL Error: '%s' returned %d!\n", #_expr, (int)_err); \
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cleanup(); \
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exit(-1); \
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} while (0)
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#define CL_CHECK2(_expr) \
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({ \
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cl_int _err = CL_INVALID_VALUE; \
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decltype(_expr) _ret = _expr; \
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if (_err != CL_SUCCESS) { \
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printf("OpenCL Error: '%s' returned %d!\n", #_expr, (int)_err); \
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cleanup(); \
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exit(-1); \
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} \
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_ret; \
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})
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static int read_kernel_file(const char* filename, uint8_t** data, size_t* size) {
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if (nullptr == filename || nullptr == data || 0 == size)
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return -1;
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FILE* fp = fopen(filename, "r");
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if (NULL == fp) {
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fprintf(stderr, "Failed to load kernel.");
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return -1;
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}
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fseek(fp , 0 , SEEK_END);
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long fsize = ftell(fp);
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rewind(fp);
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*data = (uint8_t*)malloc(fsize);
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*size = fread(*data, 1, fsize, fp);
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fclose(fp);
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return 0;
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}
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cl_device_id device_id = NULL;
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cl_context context = NULL;
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cl_command_queue commandQueue = NULL;
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cl_program program = NULL;
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cl_kernel kernel = NULL;
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cl_mem a_memobj = NULL;
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int *h_a = NULL;
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uint8_t *kernel_bin = NULL;
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static void cleanup() {
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if (commandQueue) clReleaseCommandQueue(commandQueue);
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if (kernel) clReleaseKernel(kernel);
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if (program) clReleaseProgram(program);
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if (a_memobj) clReleaseMemObject(a_memobj);
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if (context) clReleaseContext(context);
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if (device_id) clReleaseDevice(device_id);
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if (kernel_bin) free(kernel_bin);
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if (h_a) free(h_a);
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}
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int size = 64;
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static void show_usage() {
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printf("Usage: [-n size] [-h: help]\n");
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}
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static void parse_args(int argc, char **argv) {
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int c;
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while ((c = getopt(argc, argv, "n:h?")) != -1) {
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switch (c) {
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case 'n':
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size = atoi(optarg);
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break;
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case 'h':
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case '?': {
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show_usage();
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exit(0);
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} break;
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default:
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show_usage();
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exit(-1);
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}
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}
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printf("Workload size=%d\n", size);
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}
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int main (int argc, char **argv) {
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// parse command arguments
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parse_args(argc, argv);
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cl_platform_id platform_id;
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size_t kernel_size;
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cl_int binary_status;
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// read kernel binary from file
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if (0 != read_kernel_file("kernel.pocl", &kernel_bin, &kernel_size))
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return -1;
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// Getting platform and device information
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CL_CHECK(clGetPlatformIDs(1, &platform_id, NULL));
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CL_CHECK(clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_DEFAULT, 1, &device_id, NULL));
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printf("Create context\n");
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context = CL_CHECK2(clCreateContext(NULL, 1, &device_id, NULL, NULL, &_err));
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printf("Allocate device buffers\n");
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size_t nbytes = size * sizeof(float);
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a_memobj = CL_CHECK2(clCreateBuffer(context, CL_MEM_READ_ONLY, nbytes, NULL, &_err));
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printf("Create program from kernel source\n");
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program = CL_CHECK2(clCreateProgramWithBinary(
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context, 1, &device_id, &kernel_size, (const uint8_t**)&kernel_bin, &binary_status, &_err));
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if (program == NULL) {
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cleanup();
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return -1;
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}
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// Build program
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CL_CHECK(clBuildProgram(program, 1, &device_id, NULL, NULL, NULL));
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// Create kernel
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kernel = CL_CHECK2(clCreateKernel(program, KERNEL_NAME, &_err));
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// Set kernel arguments
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CL_CHECK(clSetKernelArg(kernel, 0, sizeof(cl_mem), (void *)&a_memobj));
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// Allocate memories for input arrays and output arrays.
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h_a = (int*)malloc(nbytes);
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// Initialize values for array members.
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for (int i = 0; i < size; ++i) {
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h_a[i] = -1 + i;
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}
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// Creating command queue
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commandQueue = CL_CHECK2(clCreateCommandQueue(context, device_id, 0, &_err));
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printf("Upload source buffers\n");
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CL_CHECK(clEnqueueWriteBuffer(commandQueue, a_memobj, CL_TRUE, 0, nbytes, h_a, 0, NULL, NULL));
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printf("Execute the kernel\n");
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size_t global_work_size[1] = {size};
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size_t local_work_size[1] = {1};
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auto time_start = std::chrono::high_resolution_clock::now();
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CL_CHECK(clEnqueueNDRangeKernel(commandQueue, kernel, 1, NULL, global_work_size, local_work_size, 0, NULL, NULL));
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CL_CHECK(clFinish(commandQueue));
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auto time_end = std::chrono::high_resolution_clock::now();
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double elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(time_end - time_start).count();
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printf("Elapsed time: %lg ms\n", elapsed);
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printf("PASSED!\n");
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// Clean up
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cleanup();
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return 0;
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}
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