asukiaaa / c_opencl_practice

c opencl practice

Environment

Name	Version
OS	Ubuntu 17.04
CPU	Intel Corei7-4600U CPU @ 2.10GHz × 4
GPU	Intel Haswell Mobile
GPU driver	OpenCL™ Runtime for Intel® Core™ and Intel® Xeon® Processors ver 16.1.2 for Red Hat and Ubuntu Linux
OpenCL	2.2.11-1ubuntu1
GCC	7.2.0-8ubuntu3

Usage

Hello world

gcc hello.c -lOpenCL
./a.out

Matrix dot matrix on GPU

gcc matrix_dot_matrix.c -lOpenCL
./a.out

Matrix dot matrix on CPU

gcc matrix_dot_matrix_on_cpu.c
./a.out

Times

Matrixes mutation.

Program	2000x2000	4000x4000	10000x10000
matrix_dot_matrix_on_cpu	62.441596 seconds	594.915341 seconds	Did not try
matrix_dot_matrix (on GPU)	18.725523 seconds	203.470782 seconds	4436.742463 seconds

References

• OpenCLで行列の掛け算をしてみた
• 3.3 First OpenCL Program
• How to compile OpenCL example in GCC?
• Matrix multiplication in OpenCL
• KhronosGroup/OpenCL-Headers/opencl22/CL/cl.h
• clEnqueueNDRangeKernel