There can be multiple partitions in an AI Engine array. Each of these
AI Engine partitions contain independent graphs. The xclbin file generated by the v++
packager includes the metadata for all partitions. For information
about the v++ building flow, see Compiling AI Engine Graph for Independent Partitions.
A handle to a graph in a partition can be retrieved from the device
after loading the xclbin. You can use this
handle to control the graph. To do so, the graph name is prefixed with the partition
name in the xrt::graph(device,uuid,"pr0_gr") API.
Following is example code used to control the pr0
and pr1 partitions:
// Open xclbin
auto device = xrt::device(0); //device index=0
auto uuid = device.load_xclbin(xclbinFilename);
//Create handle for graph "gr" in partition "pr0"
auto ghdl1=xrt::graph(device,uuid,"pr0_gr");
ghdl1.run(iterations);
//Create handle for graph "gr" in partition "pr1"
auto ghdl2=xrt::graph(device,uuid,"pr1_gr");
ghdl2.run(iterations);
ghdl1.wait();
ghdl2.wait();To reload AI Engine partitions on hardware refer to Runtime Control and Reload of AI Engine Partitions.