InAccel Coral relies on the provided compliant runtimes (loaded via the
inaccel/mkrt command) as its interface to the
target resource, memory, buffer and compute unit
entities.
mkrt retrieves information about installed runtimes from special metadata
directories. These directories are named after the runtime, and contain the
shared object (a.out) implementation of the spec. A file in the pkg-config
format is used by mkrt to link against the runtime.
The following is an example of the inaccel.pc file for the default
Xilinx FPGA runtime, that depends on
Xilinx/XRT OpenCL API:
xilinx-fpga/inaccel.pc
XILINX_XRT=$ORIGIN
Name: Xilinx FPGA
Version: 2
Description: The default 'Xilinx FPGA' runtime
URL: https://github.com/inaccel/runtime
Libs: -L/opt/xilinx/xrt/lib -lxilinxopencl -lxrt_core
By default, mkrt searches the directory tree rooted at
/etc/inaccel/runtimes for these files. The MKRT_CONFIG_PATH environment
variable can be used to specify a non-default location.
InAccel provides a default Coral runtime for each of the two major FPGA platforms (Intel, Xilinx). Both runtimes depend on the OpenCL (Open Computing Language) standard that the two vendors implement.
- Build Intel FPGA runtime
make /path/to/intel-fpga/a.out- Build Xilinx FPGA runtime
make /path/to/xilinx-fpga/a.out