Question

Vector processor nd advantaage and disadvantage of vector processor in computer organiaion

Answer 1

Answer: Each result is independent of previous results - allowing

high clock rates.

 A single vector instruction performs a great deal of work -

meaning less fetches and fewer branches (and in turn fewer

mispredictions).

 Vector instructions access memory a block at a time which

results in very low memory latency.

 Less memory access = faster processing time.

 Lower cost due to low number of operations compared to

scalar counterparts.

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DISADVANTAGES

 Works well only with data that can be executed in highly or

completely parallel manner.

 Needs large blocks of data to operate on to be efficient

because of the recent advances increasing speed of

accessing memory.

 Severely lacking in performance compared to normal

processors on scalar data.

 High price of individual chips due to limitations of on-chip

memory.

 Increased code complexity needed to vectorize the data.

 High cost in design and low returns compared to

superscalar microprocessors