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ChipMulti-clusteringAndTheJamaicaArchitecture

Chip multiclustering

Why extend the hierarchy?

• bus limitations, scalability
• fault tolerance
• replicability
• shared memory

Going beyond a single bus

• protocol extensions
• additional hardware
• deadlock avoidance and flow-control

PIMSS - A multi-level on-chip shared memory protocol

• description
• four-phase handshaking
• hunt and gathering explained

Additional Hardware

• queue mechanisms, including active/passive and priority queue
• bus address table
• nacking

Deadlock avoidance and flow-control