48 Processing Moves Towards Storage Trends: Trends: I/O bus bandwidth is bottleneck I/O bus bandwidth is bottleneck Switched serial nets support very high bandwidth Switched serial nets support very high bandwidth Processor/memory interface is bottleneck Processor/memory interface is bottleneck Growing CPU/DRAM perf gap leading to most CPU cycles in stalls Growing CPU/DRAM perf gap leading to most CPU cycles in stalls Combine CPU, serial network, memory, & disk in single package Combine CPU, serial network, memory, & disk in single package E.g.
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