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

What is ipc, What is IPC? What are the various schemes available? The t...

What is IPC? What are the various schemes available? The term IPC (Inter-Process Communication) explains various ways by which different process running on some operating syste

What is direct addressing mode, Computer Organization and Architecture ...

Computer Organization and Architecture 1. Draw the block diagram of von Neumann Architecture and describe about its parts in brief. 2. Draw block diagram of Intel 8085 CPU o

Determine how simulation can be developed, Determine how Simulation can be ...

Determine how Simulation can be developed To determine how a simulation can be developed for use in a real situation the below illustration has been chosen. Scenario chosen is

Gui status in a program from the object browser, Can we create a gui status...

Can we create a gui status in a program from the object browser? Yes.  You can make a GUI STATUS in a program using SET PF-STATUS.

Quick sort exhibit its worst-case behaviour, In which input data does the a...

In which input data does the algorithm quick sort exhibit its worst-case Behaviour? The Quick Sort method exhibits its worst-case behavior when the input data is " Already Comp

The disadvantage of specifying parameter, The disadvantage of specifying pa...

The disadvantage of specifying parameter during instantiation are: -  This has a lower precedence when compared to assigning using defparam.

Memory cache hierarchy and virtual memory system, 1. Detail for each of the...

1. Detail for each of the four following MIPS instructions, which actions are being taken at each of their five steps. Do not forget to mention how and during which steps each inst

Explain characteristics of latch and flip-flop, Explain characteristics of ...

Explain characteristics of Latch and Flip-Flop. Latches are level-sensitive and transparent While the clock is high it passes input value to Output While the clock is l

How many address bits are needed to show a 32 K memory, How many address bi...

How many address bits are required to represent a 32 K memory ? Ans. 32K = 25 x 210 = 215, Hence 15 address bits are needed; Only 16 bits can address this.

What is a program counter, It is a 16 bit special function register in the ...

It is a 16 bit special function register in the 8085 microprocessor. It remains track of the next memory address of the instruction that is to be implemented once the implementatio

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