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COMPUTER SCIENCE -Comparative Architectures Assignment

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Added on: 2023-02-04 10:29:02
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Question Task Id: 0

(a) Some VLIW processors exploit fine-grain multithreading and SIMD execution units.

(i) What benefits could adding support for fine-grain multithreading to a VLIW processor provide? [4 marks]

(ii) Why might a simple round-robin thread schedule be inefficient and how could we improve the schedule? [2 marks]

(iii) Assuming the VLIW processor has taken full advantage of fine-grain multithreading with a simple round-robin thread schedule, what changes to the processor might an optimised thread schedule require to ensure programs continue to execute correctly? [4 marks]

(iv) Why might it be useful to include SIMD functional units when a VLIW processor can already specify independent operations to be executed in parallel? [4 marks]

(b) Some VLIW processors support variable-length bundles of independent instructions.

(i) Why is this a useful feature and how could it be supported? [2 marks]

(ii) What costs would be incurred and additional logic needed to support this feature? [4 marks]

  • Uploaded By : Katthy Wills
  • Posted on : February 04th, 2023
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