My server only CPU, no GPU, I should download Mapd GPU version or Mapd CPU version?
You should download the CPU version
If I am using the GPU version, does it have any impact?
MapD will just fall back to CPU mode when it sees you have no GPU available.
falls back to CPU mode in the absence of a GPU, he meant.
Ooops corrected above
Currently in v3.3.0 if you do not have GPU’s you need to use the CPU only binary currently. Unfortunately it appears we have introduced a regression into the code with release 3.3.0, where if you run a GPU version without a supported GPU driver the server will not start. The code is now fixed and when 3.3.1 comes out the old behaviour will be restored.
Sorry for the inconvinience