The document discusses computer processor architecture and multiprocessing. It describes the components of a single core CPU including the ALU, register file, and bus interface. It shows diagrams of multicore processors with multiple CPU cores, each with its own set of components. The cores share caches and main memory. Charts demonstrate how instructions are issued to cores over time in single and multicore processors.

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Core 0 Core 1 Core 2 Core 3
Local
Memory
Local
Memory
Local
Memory
Local
Memory
Shared Memory
Disk
Main
Memory
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ALU
Bus interface
I/O
bridge
Main
Memory
Register file
USB
controller
Graphics
adapter
Disk
Controller
Disk
System bus Memory bus
CPU chip
Expansion slots
for other devices
such as network
adapters
Mouse Keyboard Monitor
I/O Bus
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6. ALU
Bus interface
Register file
System bus
CPU chip
The Single Core
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7. Bus interface
ALU
Register file
ALU
Register file
ALU
Register file
ALU
Register file
Core 1 Core 2 Core 3 Core 4
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31 33
44 24
22 32
42 11
43 14
21 42
ISSUE SLOTS
Time(ProcessorCycles)
1 3 42
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1
22
2
4 4
2 2
ISSUE SLOTS
Time(ProcessorCycles)
1 3 42
1
1
1 1
1 1
22
2 3 3
3 3
3
3
4 4
4
4
4
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