Altera RTE for OpenCL Bedienungsanleitung PDF herunterladen (Seite 28)

Building the Host Application

Build the host executable with the <path_to_exm_opencl_hello_world_x64_linux_<version>>/hello_world/

Makefile file.

To build the host application, perform the following tasks:

1. Navigate to the hello_world directory.

Invoke the $ make -f Makefile command. Alternatively, you can simply invoke the make

command.

The hello_world executable will be in the <path_to_exm_opencl_hello_world_x64_linux_<version>>/hello_

world/bin directory.

Running the Host Application

To execute the OpenCL kernel on the FPGA , run the Linux host application that you built from the

Makefile.

1. Add the path $ALTERAOCLSDKROOT/host/linux64/lib to the LD_LIBRARY_PATH environment variable.

2. At a command prompt, navigate to the host executable within the

<path_to_exm_opencl_hello_world_x64_linux_<version>>/hello_world/bin directory.

3. Invoke the hello_world executable.

The hello_world executable executes the kernel code on the FPGA.

Output from Successful Kernel Execution

When you run the host application to execute your OpenCL kernel on the target FPGA, the RTE notifies

you of a successful kernel execution.

Example output:

Found 1 OpenCL platforms.

Querying platform for info:

==========================

CL_PLATFORM_NAME = Altera SDK for OpenCL

CL_PLATFORM_VENDOR = Altera Corporation

CL_PLATFORM_VERSION = OpenCL 1.0 Altera SDK for OpenCL, Version <version>

Querying device for info:

========================

CL_DEVICE_NAME = <board_name> : <descriptive_board_name>

CL_DEVICE_VENDOR = <board_vendor_name>

CL_DEVICE_VENDOR_ID = <board_vendor_ID>

CL_DEVICE_VERSION = OpenCL 1.0 Altera SDK for OpenCL, Version <version>

CL_DRIVER_VERSION = <version>

CL_DEVICE_ADDRESS_BITS = 64

CL_DEVICE_AVAILABLE = true

CL_DEVICE_ENDIAN_LITTLE = true

CL_DEVICE_GLOBAL_MEM_CACHE_SIZE = 32768

CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE = 0

CL_DEVICE_GLOBAL_MEM_SIZE = 0

CL_DEVICE_IMAGE_SUPPORT = false

CL_DEVICE_LOCAL_MEM_SIZE = 16384

CL_DEVICE_MAX_CLOCK_FREQUENCY = 1000

CL_DEVICE_MAX_COMPUTE_UNITS = 1

CL_DEVICE_MAX_CONSTANT_ARGS = 8

CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE = 1073741824

CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS = 3

CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS = 1024

OCL005-15.0.0

2015.05.04

Building the Host Application

3-9

Getting Started with the Altera RTE for OpenCL for x86_64 Linux and 64-Bit Linux Big-Endian System

Altera Corporation

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