Topic 12 theory

Question 1

Constrains of superscalar

Answer 1

true Data dependency,
Procedural dependency and
resource conflicts

Question 2

What is superscalar

Answer 2

able to execute multiple instructions in parallel

Question 3

Difference in terms of effects on dependency for True data depency and resource conflict.

Answer 3

Resource conflict can be overcome, by utilising duplicates resources.
Where as for true data dependency, it annot be overcome.

Question 4

Multithreading

Answer 4

one instruction divided into multiple threads, can be executed in parallel.
Multiple program counter is provided.

Question 5

Interleaved multithreading

Answer 5

switching thread at each clock cycle

Question 6

blocked multithreading

Answer 6

thread executed successively, until an event cause delay then switch to another thread.

Question 7

Simultaneous multithreading

Answer 7

simultaneously multiple threads executed by superscalar processor

Question 8

chip multiprocessing

Answer 8

multiple cores are implemented on a single chip and each core handles separate threads.

Question 9

superpipelining

Answer 9

performs task in less than 1 clock cycle, achieving greater performance