What is the difference between a scalar and superscalar processor?

A scalar processor acts on one piece of data at a time. A vector processor acts on several pieces of data with a single instruction. A superscalar processor issues several instructions at a time, each of which operates on one piece of data.

What is the advantage to choose VLIW machine instead of superscalar architecture How does this affect hardware and software?

How does this affect hardware and compiler complexity? VLIW can issue multiple operations per cycle with simple hardware. Out-of-order superscalar need complex control logic. Independent operations are scheduled statically by the compiler into the same VLIW instruction.

What is difference between Epic and VLIW?

The EPIC architecture is based on VLIW, but was designed to overcome the key limitations of VLIW (in particular, hardware dependence) while simultaneously giving more flexibility to compiler writers.

Which of the following statements are true for superscalar and VLIW architectures?

Which of the following statements are true for superscalar and VLIW architectures? a. In superscalar architecture, the compiler selects a set of instructions to be issued in parallel. In VLIW architecture, the hardware checks for dependencies and issues a set of independent instructions for execution.

What is superscalar microprocessor explain briefly?

In contrast to a scalar processor that can execute at most one single instruction per clock cycle, a superscalar processor can execute more than one instruction during a clock cycle by simultaneously dispatching multiple instructions to different execution units on the processor.

What is VLIW processor?

Very long instruction word (VLIW) describes a computer processing architecture in which a language compiler or pre-processor breaks program instruction down into basic operations that can be performed by the processor in parallel (that is, at the same time).

What are the advantages and disadvantages of VLIW architecture?

VLIW has both advantages and disadvantages. The main advantage is the saving in hardware — the compiler now decides what can be executed in parallel, and the hardware just does it. There is no need to check for dependencies or decide on scheduling — the compiler has already resolved these issues.

What is the advantage of VLIW architecture?

Advantages : Reduces hardware complexity. Reduces power consumption because of reduction of hardware complexity. Since compiler takes care of data dependency check, decoding, instruction issues, it becomes a lot simpler.

What is VLIW in computer architecture?

What is difference between CISC and RISC?

One of the major differences between RISC and CISC is that RISC emphasizes efficiency in cycles per instruction and CISC emphasizes efficiency in instructions per program. RISC needs more RAM, whereas CISC has an emphasis on smaller code size and uses less RAM overall than RISC.