Structural hazards - computer architecture:

A structural hazard takes place when a part of the processor's hardware is required by 2 or more than two instructions at the same time. A structural hazard might take place, for example, if a program were to execute a branch instruction which is followed by a computation instruction. Because they are executed in parallel manner, and because branching is very slow (needing a comparison between program counter-related computation, and writing to registers), it is possible (depending on the architecture) that the both computation and the branch instruction will need the ALU (arithmetic logic unit) at the identical time.

When a machine is pipelined then overlapped execution of instructions needs pipelining of functional units and duplication of resources to permit all possible combinations of instructions in the pipeline.

If some particular combination of instructions can't be accommodated because of a resource conflict, the machine is denoting to have a structural hazard.

Common examples of structural hazards arise when Some functional unit is not completely pipelined. Then a sequence of instructions by using that un pipelined unit can't be proceed ahead at the rate of 1 per clock cycle

 Some resource has not been duplicated adequate to permit all combinations of instructions in the pipeline to execute.

 

 

Posted Date: 10/13/2012 4:14:18 AM | Location : United States

Ask an Expert

Related Discussions:- Structural hazards - computer architecture, Assignment Help, Ask Question on Structural hazards - computer architecture, Get Answer, Expert's Help, Structural hazards - computer architecture Discussions

Write discussion on Structural hazards - computer architecture
Your posts are moderated

Write your message here..

Related Questions

Illustrate the application of e-commerce in home banking, Illustrate the ap... Illustrate the application of E-Commerce in Home Banking. Home Entertainment: E-commerce has show the way to HOME ENTERTAINMENT. The video aspect generally includes a la

Explain all the categories of common control switching, Explain all the cat... Explain all the categories that are served by Common Control switching. Common Control Switching System: It is a functional block diagram of a common control switching system i

Explain the storage class static, Explain the Storage Class Static Th... Explain the Storage Class Static The Storage Class Static : Static declarations have two important and distinct uses. The more elementary use is to allow a local variable to

By which all systems are identified, In a LAN network every system is ident... In a LAN network every system is identified by? In a LAN network all systems are identified through IP Address.

What is paging unit, Paging Unit Paging mechanism functions with 4K -... Paging Unit Paging mechanism functions with 4K - byte memory pages or with a new extension available to Pentium with 4M byte-memory pages. In the Pentium, with the new 4M-byt

Hierarchical design in multisim, It is recommended that you capture your as... It is recommended that you capture your assignment as a Hierarchical Design in Multisim. Look at the Help topic Working with Larger Designs. Design and thoroughly test each module

What do you mean by shared memory, Q. What do you mean by Shared Memory? ... Q. What do you mean by Shared Memory? In shared memory scheme more focus is on controlling parallelism instead of data parallelism. In this model numerous processes run indepen

Explain star topology, Explain Star topology. A network utilizes a star... Explain Star topology. A network utilizes a star topology if each computer attach to a central point. The following figure demonstrates the concept: Star Topology

Why pic18f452 was used in the project designed, I have used the PIC18F452 m... I have used the PIC18F452 microcontroller for both the main micro and the interface chip device because of it enhanced features that can be used to meet the specification required

. net is compile time or runtime environment, . NET is Compile Time OR RunT... . NET is Compile Time OR RunTime Environment?   .Net's framework has CLS,CTS and CLR.CTS checks declaration of types at the time when u write code and CLS explains some rules a