Amdahls law - calculate speed up performance, Computer Engineering

Assignment Help:

To calculate speed up performance various laws have been developed. These laws are discussed here.

 Amdahl's Law

Remember, the speed up factor helps us in knowing the relative gain achieved in shifting the implementation of a task from sequential computer to parallel computer and the performance does not enhance linearly with the increase in number of processors. Due to the above reason of saturation in 1967 Amdahl's law was derived. Amdahl's law states that a program have two types of operations i.e. complete sequential operations which should be done sequentially and complete parallel operations which can be implemented on multiple processors. The statement of Amdahl's law can be described with the help of an example.

Let us take a problem say P which has to be solved using a parallel computer. According to Amdahl's law, there are generally two types of operations. Thus, the problem will have some sequential operations and some parallel operations. We already know that it needs T (1) amount of time to implement a problem using a sequential algorithm and sequential machine. The time to compute the sequential operation is a fraction α (alpha) (α ≤ 1) of the total implementation time i.e. T (1) and the time to compute the parallel operations is (1- α). Thus, S (N) can be calculated as under:

512_Amdahls Law - Calculate speed up performance.png


Related Discussions:- Amdahls law - calculate speed up performance

Determine the synchronization of bits, Determine the synchronization of bit...

Determine the synchronization of bits The synchronization provided by use of start and stop bits, an extra bit known as a parity bit may optionally be transmitted along with th

Specifying the problem - learning decision trees, Specifying the Problem: ...

Specifying the Problem: Now next here furtherly we now use to look at how you mentally constructed your decision tree where deciding what to do at the weekend. But if one way

What is an accessor in c++, An accessor is a class operation that does not ...

An accessor is a class operation that does not change the state of an object in C++. The access or functions require to be declared as const operations

Arrow keys - input commands, When the user is inputting commands into your...

When the user is inputting commands into your shell, it should identify the left, right , up and down arrow keys. To implement this, you will need to use the termios.h library to

User compatibility & appropriateness of inputs and outputs, User Compatibil...

User Compatibility & Appropriateness of Inputs and Outputs User compatibility - this is the degree to which the machine works towards task completion in way that suits the u

Define memory read and write operation, Define Memory read and write operat...

Define Memory read and write operation The transfer of information from a memory word to outside environment is known as read operation. The transfer of new information to be k

Hyper-threading, Hyper-threading, officially known as Hyper-threading Techn...

Hyper-threading, officially known as Hyper-threading Technology (HTT), is Intel's trademark for their execution of the simultaneous multithreading technology on the Pentium 4 micro

What is a breeder reactor, Q. What is a breeder reactor? 92 U 238 and...

Q. What is a breeder reactor? 92 U 238 and 90 Th 232 aren't fissile materials but are abundant in nature. In the reactor these are able to be converted into a fissile mater

Find sop expression, A. F(X, Y, Z) = ∑(0, 1, 2, 6, 7) using TRUTH TABLE onl...

A. F(X, Y, Z) = ∑(0, 1, 2, 6, 7) using TRUTH TABLE only B. F(X,Y,Z) = ∑ (4,6,7,8) + D(2,5,11,12) using K-Map 1. Find SOP expression 2. Simplify SOP expression 3. Implem

Pre-os and runtime sub-os functionality, In a raw Itanium, a 'Processor Abs...

In a raw Itanium, a 'Processor Abstraction Layer' (PAL) is incorporated in system. When it's booted PAL is loaded in the CPU and provides a low-level interface which abstracts a nu

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