vai_q_caffe can be obtained in the following two ways:
Vitis AI provide docker container for quantization tools including vai_q_caffe. After running a container, activate conda environment vitis-ai-caffe. All the requirements are included, vai_q_caffe can be run directly.
conda activate vitis-ai-caffe
Install from Source Code
vai_q_caffe is open source in the caffe_xilinx repo. It is an XILINX-maintained fork of NVIDIA Caffe from branch "caffe-0.15". Building process is the same to BVLC Caffe. Refer to installation instructions here.