OpenVX 2 graphs on multicore

Created 2 graphs. One graph process v4l2 buffers at 30fps and other graph handles core processing at 5 fps on multicore platform. I would like to blend v4l2 frame(30fps) with 5fps data.
Please provide me inputs on handling these 2 graphs in OpenVX and run in parallel. Is there any specific API available for this case in OpenVX 1.3 or need to use extension API’s for this case.