Coherence Attacks and Countermeasures in Interposer-Based Systems. (arXiv:2105.02917v2 [cs.AR] UPDATED)

Industry is moving towards large-scale systems where processor cores,
memories, accelerators, etc.\ are bundled via 2.5D integration. These various
components are fabricated separately as chiplets and then integrated using an
interconnect carrier, a so-called interposer. This new design style provides
benefits in terms of yield as well as economies of scale, as chiplets may come
from various third-party vendors, and be integrated into one sophisticated
system. The benefits of this approach, however, come at the cost of new
challenges for …

ar attacks countermeasures systems