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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.

Required Modules


  • opencl

System Variables

  • HPC_{{#uppercase:opencl}}_DIR
  • HPC_{{#uppercase:opencl}}_INC

Additional Information

The following example shows how to compile 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
[prescott@r11a-s17 opencl]$ wget -q
[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

PBS Script Examples

See the OpenCL_PBS page for opencl PBS script examples.

Usage Policy

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


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