Caffe and TensorFlow supports both CPU_ONLY and CUDA mode.
The meaning of CPU_ONLY mode is to enable users to run pytorch on architectures except for AMD64 and PPC64EL (Seems that CUDA is only available on AMD64 and PPC64EL).

For example, the CPU_ONLY version of caffe is available for (not only) amd64, armel, i386, ppc64el and s390x,
while the CUDA version only supports amd64 and ppc64el.

https://buildd.debian.org/status/package.php?p=caffe
https://buildd.debian.org/status/package.php?p=caffe-contrib