With the default installation I was able to emulate over a10gx_hostch.
After playing around, I messed up something.
I reinstalled a10_ref but my code can no longer get device info since a10gx_hostch is not installed.
Any help would be great to fix the issue.
Also, I have no actual hardware connected to PCIe.
I figured, if you set CL_CONTEXT_EMULATOR_DEVICE_INTELFPGA=1 in the ~/.bashrc or before running the host, you will face error in creating context..
So, for it to work I had to provide it with the host binary.
Probably kind of a bug or something. Since the startup guide says to set it before running the host binary.