Developing portable software

Download 370.21 Kb.

View original pdf

Page	27/31
Date	25.01.2021
Size	370.21 Kb.
	#55683

1 ... 23 24 25 26 27 28 29 30 31

Mooney2004 Chapter DevelopingPortableSoftware (1)

6.1.8
Measuring Success
An important management concern is to demonstrate with facts and figures that making software portable is a good idea, as well as to show that this goal has been achieved. Metrics are required to evaluate portability in this way. One useful metric is the degree of portability, defined as:
This metric maybe estimated before beginning a porting project by comparing the estimated cost of porting with that of redevelopment, using standard cost estimation techniques. Note that the elements of the cost must be considered in the context of a specific target environment or class of environments. Degree of portability has no meaning without this context.
The main difference between the two cost alternatives is that porting begins with adaptation, while redevelopment begins with redesign and reimplementation.
If DP < 0, porting is more costly and should be avoided. If DP >= 0, then it will range between 0 and 1. In this case porting is the preferred solution,
and the vale of DP is proportional to the expected cost of porting.

82
James D. Mooney
This metric maybe estimated before initial development, to determine if portable development is worthwhile. It may also be estimated after initial development to characterize the portability that has been achieved.

Download 370.21 Kb.

Share with your friends:

1 ... 23 24 25 26 27 28 29 30 31