rocm-systems/samples/1_Utils/hipCommander/perf/latency_nullstream.hcm

setstream,0;
NullKernel; streamsync;
loop,100000; NullKernel; streamsync; endloop,1;

loop,100000; H2D;  NullKernel; streamsync; endloop,1;

loop,100000; H2D;  NullKernel; D2H;  streamsync; endloop,1;