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

Integrating virtual memory, Integrating Virtual Memory, TLBs, and Caches - ...

Integrating Virtual Memory, TLBs, and Caches - computer architecture:   There are 3 types of misses: 1. a cache miss 2. TLB miss 3. a page fault 2 techniqu

Computer graphics, source code for IMPLEMENTATION FOR ELECTROMAGNETIC INDUC...

source code for IMPLEMENTATION FOR ELECTROMAGNETIC INDUCTION

Speed of memory versus speed of CPU, In the past there was a large gap betw...

In the past there was a large gap between speed of a memory andprocessor. So a subroutine execution for an instruction for illustration floating point addition may have to follow a

Explain the numbering plan for isdn address structure, Explain the numberin...

Explain the numbering plan for ISDN address structure. The numbering plan for ISDN is evolved with using the following guidelines: 1. This is based on, and is an improvemen

What is a word line, What is a word line? In a memory cell, all the cel...

What is a word line? In a memory cell, all the cells of a row are linked to a common line called as word line

Temporary registers w and z, Why the temporary registers W and Z are named ...

Why the temporary registers W and Z are named so I mean we start from A,B,C,D,E then H and L coz H stands for higher bit nd L for lower bit of the address pointed by memory pointer

Illustrate header section of a device driver, Q. Illustrate Header section ...

Q. Illustrate Header section of a device driver? Header comprises information which allows DOS to identify the driver. It also comprises pointers which allow it to chain to ot

Explain the matlab language, This is a high-level matrix/array language wit...

This is a high-level matrix/array language with control flow statements, functions, data structures, input/output, and object-oriented programming features. It permits both "progra

What are the process states, What are the Process states? By the course...

What are the Process states? By the courses of implementation, processes change state. Status of a process is express by its present activity. Dissimilar practical states of

What is edi (electronic data interchange), What is EDI (Electronic Data Int...

What is EDI (Electronic Data Interchange)? EDI: Electronic Data Interchange (EDI) is used by organizations for transactions that happen on regular basis to a pre-determined for

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