marmistrz / opencl-benchmark

Sample program to compare calculation performance between CPU and GPU

OpenCL Performance Test

This is a simple test to compare the performance between CPU and GPU computation.

There are two program cpu.c and gpu.c, both of them will calculate the summary of numbers from 0 to 100 million. In the end, the program will display the elapsed time.

How to run

First, you need to compile the programs. This method only works on Apple platform (macOS) for now.

Type the following command to your terminal:

make

When the compiling finished, you will have 2 binary files: cpu and gpu.

Run test on CPU:

./cpu

Run test on GPU:

./gpu

What's your test result?

iMac Late 2015

I ran the test on an iMac Late 2015, which has:

CPU: 1.6 GHz Intel Core i5
GPU: 1535 MB Intel HD Graphics 6000

The runtime result is:

CPU: 0.315500ms
GPU: 0.000862ms

MacBook Pro Mid 2015

Another test on MacBook Pro Mid 2015:

CPU: 2.5 GHz Intel Core i7
GPU: 1536 MB Intel Iris Pro

Runtime result:

CPU: 0.216143ms
GPU: 0.000545ms

MacBook Pro Late 2013

On MacBook Pro Late 2013:

CPU: 2.4 GHz Intel Core i5
GPU: 1536 Intel Iris

Runtime result:

CPU: 0.291636ms
GPU: 0.001999ms

MacBook Pro Mid 2012

On MacBook Pro Mid 2012:

CPU: 2.5 GHz Intel Core i5
GPU: 1536 MB Intel HD Graphics 4000

Runtime result:

CPU: 0.284128ms
GPU: 0.001589ms