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.
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
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
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
On MacBook Pro Late 2013:
CPU: 2.4 GHz Intel Core i5
GPU: 1536 Intel Iris
Runtime result:
CPU: 0.291636ms
GPU: 0.001999ms
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
