What is the advantage of VLIW CPU over superscalar?

What is the advantage of VLIW CPU over superscalar?

Advantages of VLIW are: Performance similar to CISC and RISC. Reduced hardware complexity over a superscalar implementation. Uses instruction level parallelism to the fullest.

What are the advantages and disadvantages of VLIW architecture?

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. Increases potential clock rate.

What is the basic difference between superscalar and VLIW computers?

Superscalar Processor

VLIW Architecture	Superscalar Processor
VLIW is less complex.	Superscalar processors with the same degree of parallelism are more complex than VLIW architecture.
VLIW is used for static scheduling.	Superscalar is used for dynamic scheduling.

Which processor is better between super scalar processor and VLIW processor?

In comparison to superscalar processors, VLIW exhibits a speedup range of 1.18 to 2.44 on Kernels. On the other hand, Superscalar processors show a high performance on some control-intensive applications with a speedup range of 1.15 to 1.33 compared to VLIW processors.

What are the disadvantages of VLIW processors?

VLIW Advantages & Disadvantages (aot SS)

• Programmer/compiler complexity and longer compilation times.
• Lock step operation, i.e., on hazard all future issues stall until hazard is resolved (hence need for predication)
• Object (binary) code incompatibility.
• Needs lots of program memory bandwidth.
• Code bloat.

What is the limitation of VLIW?

VLIW has been perceived as suffering from important limitations, such as the need for a powerful compiler, increased code size arising from aggresive scheduling policies, larger memory bandwidth and register-file bandwidth, limitations due to the lock-step operation, binary compatibility across implementations with …

What are the advantages of superscalar architecture?

use superscalar architecture. The main benefit and difference of superscalar technology versus pipelining is that it allows processors to execute more than one instruction per clock cycle with multiple pipelines.

What is superscalar approach?

Superscalar architecture is a method of parallel computing used in many processors. In a superscalar computer, the central processing unit (CPU) manages multiple instruction pipelines to execute several instructions concurrently during a clock cycle.

What is the basic principle of VLIW processor?

VLIW Architecture – Basic Principles The processors have relatively simple control logic because they do not perform any dynamic scheduling nor reordering of operations (as is the case in most contemporary superscalar processors).

Why a processor is called superscalar?

With this arrangement, several instructions start execution in the same clock cycle and the process is said to use multiple issue. Such processors are capable of achieving an instruction execution throughput of more than one instruction per cycle. They are known as ‘Superscalar Processors’.

How does superscalar processing work?

In a superscalar computer, the central processing unit (CPU) manages multiple instruction pipelines to execute several instructions concurrently during a clock cycle. This is achieved by feeding the different pipelines through a number of execution units within the processor.