OpenCL - when to use it? (help and benchmark oppose each other!)

[ektorbarajas]

Hi. It has being a long time 

Just wanted to know if this minor issue has being corrected in the beta 1.9.0?

Regards

[Admin]

Thanks for reminder, we fixed help text:
Don’t turn on OpenCL acceleration if the results of OpenCL benchmark are longer in ms. than processor’s benchmark, because this will increase overhead costs due to increased expenses for data transfer to the OpenCL device.

[ektorbarajas]

Great!!!

Kind regards

[soylentgreen]

Which would be better in this situation:

Work size= 64
CPU= 600ms
GPU= 74ms

Work size= 512
CPU= 700ms
GPU= 150ms

The 512 GPU is still much faster than CPU. So would 512 be faster than 64 in this case?

[Admin]

lower values is better.
use work size 64, work size is how much separate "threads/processes" run simultaneously, it doesn't directly related to performance, different devices have different optimum value. 512 doesn't mean better 64.