lec23 - LECTURE - 23 Topics Remaining HW2 handed out...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
LECTURE - 23
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Topics Remaining ± HW2 handed out today/tomorrow ± Multiprocessors: 4 lectures ± Inter-connection networks: 1 lecture ± I/O: 2 lectures ± Review: 1 or 2 lectures ± Take-home part of end-sem handed out ± Special topics: ² Vector processors ² Power optimization issues
Background image of page 2
Topic for Today's Lecture ± Multiprocessing ± ± Scribe for today?
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Why Multiprocessors? Motivation: Go beyond the performance offered by a single processor Without requiring specialized processors Without the complexity of too much multiple issue Opportunity: Software available Parallel programs Multi-programmed machines
Background image of page 4
Multiprocessors: The SIMD Model ± SISD: Single Instruction stream, Single Data stream ² Uniprocessor ² This is the view at the ISA level ² Tomasulo uncovers data stream parallelism ± SIMD: Single Instruction stream, Multiple Data streams ² ISA makes data parallelism explicit ² Special SIMD instructions ² Same instruction goes to multiple functional units, but acts on different data
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
SIMD Drawbacks SIMD useful for loop-level parallelism
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 11

lec23 - LECTURE - 23 Topics Remaining HW2 handed out...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online