Multi-core architectures

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1Multi-core architecturesJernej Barbic15-213, Spring 2007May 3, 20072Single-core computer3Single-core CPU chipthe single core4Multi-core architectures This lecture is about a new trend in computer architecture:Replicate multiple processor cores on a single 1Core 2Core 3Core 4Multi-core CPU chip5Multi-core CPU chip The cores fit on a single processor socket Also called CMP (Chip Multi- processor )core1core2core3core46The cores run in parallelcore1core2core3core4thread 1thread 2thread 3thread 47Within each core, threads are time-sliced (just like on a uniprocessor)

• A computer game can do AI, graphics, and physics in three separate threads • Single-core superscalar processors cannot fully exploit TLP • Multi-core architectures are the next step in processor evolution: explicitly exploiting TLP

  Processor, Computer