Performance and issues in pipelining-throughput, Computer Engineering

Assignment Help:

Performance and Issues in Pipelining

Throughput: Throughput of a pipeline can be defined as the number of results that have been getting per unit time. It can be denoted as:

                                                   T = n / [m + (n-1)]. c = E / c

Throughput signifies the computing power of the pipeline.

Maximum speed up, throughput and efficiency are the perfect cases but these are not achieved in the useful cases, as the speedup is limited due to the many factors:

  • Data dependency between successive tasks:There might be dependencies among the instructions of two tasks used in the pipeline. For example, one instruction cannot be going ahead until the previous instruction returns the results, as both are interdependent. One more instance of data dependency will be when that both instructions try to modify the similar data object. These are known as data hazards.
  • Resource Constraints: When resources are not available at the time of implementation then delays are caused in pipelining. For example, if single common memory is used for both instructions and data and there is require to read/write and fetch the instruction at the similar time then only one can be carried out and the other has to stay. One more example is of limited resource like implementation unit, which may be busy at the required time.
  • Branch Instructions and Interrupts in the program:A program is not a directly flow of sequential instructions. There may be branch instructions that modify the normal flow of program, which delays the pipelining implementation and affects the performance. Likewise, there are interrupts that postpones the implementation of next instruction until the interrupt has been serviced. Interrupt and the Branches have harmful effects on the pipelining.

Related Discussions:- Performance and issues in pipelining-throughput

State a simple pull transaction, a. Explain the future of mobile commerce i...

a. Explain the future of mobile commerce in world? b. 'Push and Pull' are two ways of transferring information to and from a phone, through WAP. Now, with the help of diagram, s

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

What is looping, What is looping Loop is a control structure used to do...

What is looping Loop is a control structure used to do repetitive operation. Some programs include repeating a set of instruction either a particular number of times or until a

Show the layout of dvorak-dealey keyboard, Q. Show the layout of Dvorak-Dea...

Q. Show the layout of Dvorak-Dealey keyboard? This was one keyboard layout designed to be a challenger to QWERTY layout. This was designed by August Dvorak and William Dealey a

Illustrate about compact disk rewritable, Q. Illustrate about Compact Disk ...

Q. Illustrate about Compact Disk Rewritable? CD-RW optical disk can be repeatedly written and overwritten same as with a magnetic disk. Even though a number of techniques have

Give an example of shortest job next scheduling, Consider the following set...

Consider the following set of jobs with their arrival  times, execution time (in minutes), and deadlines. Job Ids Ar r ival Time E xecuti

What are the limitations of mobile devices, What are the limitations of mob...

What are the limitations of mobile devices? For mobile devices we require both PC-integrated applications and specialized mobile services quite than repurposed website content.

How many types of memory in computer architecture, Computer have many type ...

Computer have many type of memory like primary memory , Auxiliary memory ,  Cache memory , buffer memory ,virtual memory , The work of all memory heterogeneously primary memory

Avoiding overfitting - decision tree learning , Avoiding Overfitting : ...

Avoiding Overfitting : However remember there that in the previous lecture, there is over fitting that common problem in machine learning. Furthermore details to decision tree

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