Very long instruction word architecture, Computer Engineering

Assignment Help:

Superscalar architecture was designed to increase the speed of the scalar processor. But it has been realized it's not easy to apply. Subsequent are a number of problems faced in the superscalar architecture:

• It is needed that extra hardware should be given for hardware parallelism like decoder and arithmetic units, instruction registers etc.

• Scheduling of instructions dynamically to diminish the pipeline delays and to keep all processing units busy is very hard.

Another option to increase speed of processor is to use a series of instructions having no dependency and might need various resources so avoiding resource conflicts. The concept is to unite these independent instructions in a compact long word integrating many operations to be executed concurrently. So this architecture is known as "very long instruction word (VLIW) architecture". Actually long instruction expressions carry the opcode of various instructions that are dispatched to several functional units of the processor. In this manner all the operations to be implemented concurrently by the functional units are synchronized in a VLIW instruction. The size of VLIW instruction word may be in hundreds of bits. VLIW instructions should be formed by compacting small instruction words of conventional program. The job of compaction in VLIW is completed by compiler. The processor should have the enough resources to implement all the operations in VLIW word concurrently.


Related Discussions:- Very long instruction word architecture

Software Engineering, explanation of the difference between syntax and sema...

explanation of the difference between syntax and semantic errors

What are font metrics classes, The FontMetrics class is used to describe im...

The FontMetrics class is used to describe implementation-specific properties, like ascent and descent, of a Font object.

How adaptive transmission helps tcp to maximize connection, How adaptive tr...

How adaptive transmission helps TCP to maximize throughput on each connection? To know how adaptive retransmission helps TCP maximize throughput upon all connection, see a case

The three main elements of ldb, The three main elements of LDB are:- St...

The three main elements of LDB are:- Structure Selections and Database Program.

Explain the need for user-defined functions, Explain the need for user-defi...

Explain the need for user-defined functions. The need for user-defined function: 1.  A programmer might be having a block of code that he has repeated forty times all over t

Explain the propagation delay characteristics for digital ic, Explain the ...

Explain the Propagation Delay characteristics for digital IC's. Ans: Propagation Delay: - The speed of a digital IC operation is given in terms of propagation delay ti

What is master clock signal in control unit, Q. What is Master Clock Signal...

Q. What is Master Clock Signal in Control Unit? The Master Clock Signal: This signal causes micro-operations to be executed in a square. In a single clock cycle either a single

State about dynamic modelling and its inputs, State about Dynamic modelling...

State about Dynamic modelling and its inputs Dynamic modelling is elaborated further by adding concept of time: new attributes are computed, as a function of the attribute chan

What is insert module and goal seek functions there in vba, Visual basic ap...

Visual basic applications have very rich and flexible applications but there is single limitation when using pointer function. Windows API has limited support for function pointers

Determine about the intranet server, Determine about the Intranet server ...

Determine about the Intranet server The success or usage of the Intranet server is measured by the number of operations it handles per Unit time. The selection of a good server

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd