A GMIO port attribute is used to make external memory-mapped connections to or from the global memory. These connections are made between an AI Engine graph and the logical global memory ports of a hardware platform design. For more details please refer GMIO Attributes.
GMIO gmioIn1("gmioIn1", 64, 1000);
GMIO gmioOut("gmioOut", 64, 1000);
simulation::platform<1, 1> platform(&gmioIn1, &gmioOut);
myGraph filter_graph;
connect<> net0(platform.src[0], filter_graph.in1);
connect<> net1(filter_graph.out1, platform.sink[0]);