Abstract-Broadcast has been traditionally regarded as a prohibitive communication transaction in multiprocessor environments. Nowadays, such constraint largely drives the design of architectures and algorithms all-pervasive in diverse computing domains, directly and indirectly leading to diminishing performance returns as we reach the manycore era. Novel interconnect technologies could allow to revert this trend by offering, among others, improved broadcast support even in large-scale chip multiprocessors. In this position paper, the prospects of wireless on-chip communication technologies pointing towards low-latency (a few cycles) and energy-eff cient (a few pJ/bit) broadcast are outlined. This work also discusses the challenges and potential impact of adopting these technologies as key enablers of unconventional hardware architectures and algorithmic approaches, in the pathway of signif cantly improving the performance, energy eff ciency, scalability and programmability of manycore chips.

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