OpenCL

Description

OpenCL™ (Open Computing Language) is a low-level API for heterogeneous computing that runs on GPUs. Using the OpenCL API, developers can launch compute kernels written using a limited subset of the C programming language on a GPU.

Environment Modules

Run module spider opencl to find out what environment modules are available for this application.

System Variables

HPC_OPENCL_DIR - installation directory
HPC_OPENCL_INC
HPC_OPENCL_LIB

Additional Information

The following example shows how to build a sample code with OpenCL.

[prescott@r11a-s17 ~]$ mkdir opencl
[prescott@r11a-s17 ~]$ cd opencl
[prescott@r11a-s17 opencl]$ module load opencl
[prescott@r11a-s17 opencl]$ wget -q https://raw.github.com/smistad/OpenCL-Getting-Started/master/main.c
[prescott@r11a-s17 opencl]$ wget -q https://raw.github.com/smistad/OpenCL-Getting-Started/master/vector_add_kernel.cl
[prescott@r11a-s17 opencl]$ gcc -c -I$HPC_OPENCL_INC main.c -o main.o
[prescott@r11a-s17 opencl]$ gcc main.o -o myopenclprog -l OpenCL

Usage Policy

OpenCL is a trademark of Apple Inc., used under license by Khronos.

Installation

The OpenCL implementation installed on the cluster is the one included with the NVIDIA CUDA Toolkit.