The aiecompiler is not limited to a one to
one connection of buffer ports. In certain circumstances the same output buffer
might be used by multiple other kernels to perform various tasks. You can connect a
producer to as many consumers that are needed. The aiecompiler will automatically infer a MM2S DMA to read the output
buffer and as many S2MM DMAs as there are consumers to write to their respective
input buffers.
private:
adf::kernel mk;
adf::kernel tk0,tk1,tk2,tk3;
...
connect net0 ( mk.out[0] , tk0.in[0] );
connect net1 ( mk.out[0] , tk1.in[0] );
connect net2 ( mk.out[0] , tk2.in[0] );
connect net3 ( mk.out[0] , tk3.in[0] );
...
dimensions(tk0.in[0]) = {128};
dimensions(tk1.in[0]) = {128};
dimensions(tk2.in[0]) = {128};
dimensions(tk3.in[0]) = {128};Kernel function prototypes:
tk0(input_buffer<int32, adf::extents<adf::inherited_extent>> & in0, output_buffer<int32, adf::extents<OUTPUT_SAMPLE_SIZE>> & out0);
tk1(input_buffer<int32, adf::extents<adf::inherited_extent>, adf::margin<32>> & in0, output_buffer<int32, adf::extents<OUTPUT_SAMPLE_SIZE>> & out0);
tk2(input_buffer<int32, adf::extents<adf::inherited_extent>, adf::margin<64>> & in0, output_buffer<int32, adf::extents<OUTPUT_SAMPLE_SIZE>> & out0);
tk3(input_buffer<int32, adf::extents<adf::inherited_extent>> & in0, output_buffer<int32, adf::extents<OUTPUT_SAMPLE_SIZE>> & out0);The input buffer to kernels tk0, tk1, tk2, and tk3 are served at the same time. This is because the
output buffer of the kernel mk is read only once.
The slight delay variation is only due to the different AXI4-Stream path taken to route from the maker to the various takers
in the AI Engine array.