//This function uses ALTERA SDK for OpenCL
cl_program
ocl_create_program_from_binary_for_fpga(OclPlatform *ocl, const char* binaryfile)
{
cl_program temp;
temp = createProgramFromBinary(ocl->context, binaryfile, ocl->devices, (unsigned int) ocl->num_devices);
return temp;
}
// Initializes the OpenCL objects.
bool init_opencl(const int maxInputSize, const int maxOutputSize, const int maxWeightSize, const int maxBiasSize) {
cl_int status;
if (!setCwdToExeDir()) {
return false;
}
// Get the OpenCL platform.
platform = findPlatform("Altera");
if (platform == NULL) {
printf("ERROR: Unable to find Altera OpenCL platform.\n");
return false;
}
printf("Platform: %s\n", getPlatformName(platform).c_str());
// Query the available OpenCL devices.
scoped_array<cl_device_id> devices;
cl_uint num_devices;
devices.reset(getDevices(platform, CL_DEVICE_TYPE_ALL, &num_devices));
// We'll just use the first device.
device = devices[0];
printf("Device: %s\n", getDeviceName(device).c_str());
// Create the context.
context = clCreateContext(NULL, 1, &device, &oclContextCallback, NULL, &status);
checkError(status, "Failed to create context");
// Create the command queue.
queue = clCreateCommandQueue(context, device, CL_QUEUE_PROFILING_ENABLE, &status);
checkError(status, "Failed to create command queue");
// Create the program.
std::string binary_file = getBoardBinaryFile("waifu2x", device);
printf("Using AOCX: %s\n", binary_file.c_str());
program = createProgramFromBinary(context, binary_file.c_str(), &device, 1);
// Build the program that was just created.
status = clBuildProgram(program, 0, NULL, "", NULL, NULL);
checkError(status, "Failed to build program");
// Create the kernel - name passed in here must match kernel name in the
// original CL file, that was compiled into an AOCX file using the AOC tool
const char *kernel_name = "waifu2x"; // Kernel name, as defined in the CL file
kernel = clCreateKernel(program, kernel_name, &status);
checkError(status, "Failed to create kernel");
input_buf = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_BANK_1_ALTERA,
maxInputSize * sizeof(float), NULL, &status);
checkError(status, "Failed to create buffer for input");
weight_buf = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_BANK_2_ALTERA,
maxWeightSize * sizeof(float), NULL, &status);
checkError(status, "Failed to create buffer for weight");
bias_buf = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_BANK_2_ALTERA,
maxBiasSize * sizeof(double), NULL, &status);
checkError(status, "Failed to create buffer for bias");
output_buf = clCreateBuffer(context, CL_MEM_WRITE_ONLY | CL_MEM_BANK_1_ALTERA,
maxOutputSize * sizeof(float), NULL, &status);
checkError(status, "Failed to create buffer for output");
return true;
}
