Explain throughput performance and issues in pipelining, Computer Engineering

Assignment Help:

Throughput

Throughput of a pipeline may be defined as number of results which have been achieved per unit time. It can be referred as:

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

Throughput indicates the computing power of a pipeline. 

Utmost efficiency, speed up and throughput are the ideal cases however these are not achieved in practical cases because the speedup is limited because of the subsequent factors:

  • Data dependency between successive tasks: There can be dependencies between the instructions of two tasks used in pipeline. E.g. one instruction can't be started till the prior instruction yields the results as both are interdependent. Another Illustration of data dependency would be when that both instructions attempt to modify the same data object. These are termed as data hazards.

 

  • Resource Constraints: When resources aren't accessible at the time of execution then delays are caused in pipelining. E.g. if one common memory is used for both instructions and data and there is need to read and write and fetch an instruction at the same instance then only one can be performed and the other has to wait. Another instance of limited resource such as execution unit that might be busy at the required time.

 

  • Branch Instructions and Interrupts in the program: A program isn't a straight flow of serial instructions. There can be branch instructions which alter the general flow of program, which delays pipelining execution and influences the performance. In the same way, there are interrupts which postpones the execution of subsequent instruction till the interrupt has been serviced. Interrupts and Branches have damaging effects on the pipelining.

Related Discussions:- Explain throughput performance and issues in pipelining

Explain the term - strong typing and weak typing, Explain the term - Strong...

Explain the term - Strong Typing and  Weak Typing Strong Typing : When any operation upon an object can be checked during compile time, when type is confirmed forcefully.

Paging supervisor - computer architecture, Paging supervisor: This par...

Paging supervisor: This part of the operating system built and manages the page tables. If the  due to dynamic address translation hardware a page fault occurs exception then

What is memory address register, Q. What is Memory Address Register? Me...

Q. What is Memory Address Register? Memory Address Register (MAR): It specifies address of memory location from that data or instruction is to be accessed (read operation) or t

Staircase, What is the aim of a stair case light is controlled by two switc...

What is the aim of a stair case light is controlled by two switches one at the top of the stairs and another at the bottom of the stair

Illustrate about packet switching, Q. Illustrate about Packet switching? ...

Q. Illustrate about Packet switching? Packet switching is used to avoid long delays in transmitting data over the network. Packet switching is a technique that limits the amoun

Explain sequential sharing, Explain Sequential Sharing In this sharing ...

Explain Sequential Sharing In this sharing method, a file can be shared by just one program at a time, i.e. file accesses by P1 and P2 are spaced out over time. A lock field ca

Explain working neural network work, Q. Explain working neural network work...

Q. Explain working neural network work? ANSWER: A neural network has an input layer with the factors under consideration, a middle or hidden layer that assigns and adjusts weig

Explain the memory transfer process, Q. Explain the Memory Transfer process...

Q. Explain the Memory Transfer process? Memory Transfer Transfer of information from memory to outside world which implies I/O Interface is known as a read operation. Tra

Set up the minunit test framework - mortgage code, Set up the minunit test ...

Set up the minunit test framework examples in your environment (i.e. build or compile the code). Once you can run the example, use the minunit test framework to create and run a bo

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