CPU at 100% - Share Doesn't Validate on CPU

[kentoshi]

I'm setting up a GPU miner with multiple Nvidia 1070s.

I installed the 2nd card and ran the opencl miner, but now I'm getting 100% cpu usage.

Wondering if it is safe to put the 3rd one in?

The CPU is a celeron G1820. I think 2 cores.

I thought CPUs had very little effect on GPU mining.

Can anyone shed some light on this? Thank you!  

Edit: Also I get the message: "Share doesn't validate on CPU for GPU01 (my 2nd card).

[bathrobehero]

What are you mining that you need an opencl miner for nvidia? OpenCL is generally for AMD and CUDA is for Nvidia.

Use ccminer.