Difference between revisions of "OpenCL"

Revision as of 21:22, 6 December 2019

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.

Required Modules

Serial

opencl

System Variables

HPC_OPENCL_DIR
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.

@@ Line 6: / Line 6: @@
 |{{#vardefine:conf|}}           <!--CONFIGURATION-->
 |{{#vardefine:exe|1}}            <!--ADDITIONAL INFO-->
-|{{#vardefine:pbs|1}}            <!--PBS SCRIPTS-->
+|{{#vardefine:pbs|}}            <!--PBS SCRIPTS-->
 |{{#vardefine:policy|1}}         <!--POLICY-->
 |{{#vardefine:testing|}}       <!--PROFILING-->
@@ Line 33: / Line 33: @@
 -->
 ==System Variables==
-* HPC_{{#uppercase:{{#var:app}}}}_DIR
+* HPC_{{uc:{{#var:app}}}}_DIR
-* HPC_{{#uppercase:{{#var:app}}}}_INC
+* HPC_{{uc:{{#var:app}}}}_INC
+* HPC_{{uc:{{#var:app}}}}_LIB
 <!--Configuration-->
 {{#if: {{#var: conf}}|==Configuration==
@@ Line 42: / Line 43: @@
 {{#if: {{#var: exe}}|==Additional Information==
-The following example shows how to compile a sample code with OpenCL.
+The following example shows how to build a sample code with OpenCL.
 <pre>