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Moore‘s Law
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Reliability
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Memory Wall
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Programmability Wall
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Design complexity
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Power/energy constraints
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Programmability Wall
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Tradeoffs
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Three key components of computing: Computation, communication, storage (memory)
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von Neumann model of computation
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Stored program
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Instruction pointer
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Sequential instruction processing
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Data flow model of computation
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Precise state
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Barrier synchronization
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Relational and conditional operations
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Control versus data-driven execution
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Instruction set architecture
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Microarchitecture
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The Connection Machine
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Bit serial, ripple carry, carry lookahead adder
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High-level overview of hardware exposure (we‘ll go into these in more detail in future lectures): pipelining, out-of-order, memory access scheduling, speculative execution, superscalar processing, clock gating, caching, prefetching, voltage/frequency scaling, error correction
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Very Large Instruction Word (VLIW) processors
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Design points: Cost, performance, maximum power consumption, energy consumption, availability, reliability and correctness, time to market
