Kernel execution depends on the availability of the buffer of data on their inputs. For synchronous RTP input, each iteration of the kernel requires one RTP update on the RTP input.
The test case is sync_rtp.
The kernel signature is:
template<int32 NUM>
void vect_add(input_buffer<int32,extents<NUM>>& __restrict in,output_buffer<int32,extents<NUM>>& __restrict out,int32 value);
The RTP specification is in aie/graph.h:
adf::port<adf::direction::in> value;
adf::connect<adf::parameter>(value, k.in[1]);
Note that for RTP input, the default behavior is synchronous. It is same as:
adf::connect<adf::parameter>(value, sync(k.in[1]));
The RTP calls for aiesimulator are in aie/graph.cpp:
gr.run(4);
//synchronous RTP value calls
gr.update(gr.value,10);
gr.update(gr.value,100);
gr.update(gr.value,1000);
gr.update(gr.value,10000);
The host code for HW and HW emulation flows is in sw/host.cpp:
auto ghdl=xrt::graph(device,uuid,"gr");
const int ITERATION=4;
ghdl.run(ITERATION);
ghdl.update("gr.k.in[1]",10);
ghdl.update("gr.k.in[1]",100);
ghdl.update("gr.k.in[1]",1000);
ghdl.update("gr.k.in[1]",10000);