  The main design principles in computer architecture have recently shifted
from a monolithic scaling-driven approach to the development of heterogeneous
architectures that tightly co-integrate multiple specialized processor and
memory chiplets. In such data-hungry multi-chip architectures, current
Networks-in-Package (NiPs) may not be enough to cater to their heterogeneous
and fast-changing communication demands. This position paper makes the case for
wireless in-package nanonetworking as the enabler of efficient and versatile
wired-wireless interconnect fabrics for massive heterogeneous processors. To
that end, the use of graphene-based antennas and transceivers with unique
frequency-beam reconfigurability in the terahertz band is proposed. The
feasibility of such a nanonetworking vision and the main research challenges
towards its realization are analyzed from the technological, communications,
and computer architecture perspectives.
