1. GSPM
General Software Process Model
Prepared By
: Muhammad Naeem

2. GSPM
(General Software Process Model)
A framework that describe the activities performed at each stage of a
software development project. This GSPM deal with all kinds of client
requirements measure and unmeasured requirements. GSPM have three
modes of working on any type of software. First if client and software
team don’t know or understand our software/product requirements so
using mode1 in this mode analyses take continuous feedback of client
then done the requirements on software. Second if client sure about
our requirements of software / product and the product target is market
business , so the team make a basic version of product and given to client
then client get positive response from market then again say to team for
next version so using of this mode loss criteria is less. Third in this mode
both client and team confirm sure about our requirements, in this mode
work only experts and use for large scale projects .so in this mode project
head divide the project and make teams and all teams work in parallel. IN
this process model seven phases and three modes of working in GSPM.
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3. GSPM Diagram
Measure
Requireme
nts
Software
Requirements
Hardware
Requirements
Unmeasured
Requirement
s
Planning
Process
Modes
Mode 1
Mode 2
Mode 3
Team 1
Modeli
ng
Modeli
ng
Code
Code
Stabilizing
Deployment
Team 2
Team 3
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4. GSPM
Phases
1. Communication / Requirement / Analysis & Definition:
All requirements of the system which has to be developed are collected in this step.
Like in other process models requirements are split up in functional requirements and
constraints which the system has to fulfill. Requirements have to be collected by
analyzing the needs of the end user(s) and checking them for validity and the possibility
to implement them. Our aim is to generate a Requirements Specification Document
which is used as an input for the next phase of the model.
2. Planning:
Software cost estimation is the process of predicting the amount of effort needed to build a
software project. The software equation is a multi-variable model that supposes a definite
distribution of effort over the duration of a software development project. Outsourcing
describes the allocation of software development responsibilities to a third party. The project
manager has the responsibility to plan the project according to the project requirement so that
project duration and cost of estimation can be calculated.
3. Modeling:
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5. Modeling is a kind of technical design done by project designer in which two steps
involves.
3.1 System / Architecture Modeling:
The system has to be properly designed before any implementation is started. This
involves an architectural design which defines and describes the main blocks and
components of the system, their interfaces and interactions. By this the needed
hardware is defined and the software is split up in its components. E.g. this involves the
definition or selection of a computer platform, an operating system, other peripheral
hardware, etc. The software components have to be defined to meet the end user
requirements and to meet the need of possible scalability of the system. The aim of this
phase is to generate a System Architecture Document this serves as an input for the
software design phase of the development, but also as an input for hardware design or
selection activities. Usually in this phase various documents are generated, one for each
discipline, so that the software usually will receive a software architecture document.
3.2 Software Modeling:
Based on the system architecture which defines the main software blocks the software
design will break them further down into code modules. The interfaces and interactions
of the modules are described, as well as their functional contents. All necessary system
states like startup, shutdown, error conditions and diagnostic modes have to be
considered and the activity and behavior of the software has to be defined. The output
of this phase is a Software Design Document which is the base of the following
implementation work.
4. Construction / Coding:
Based on the software design document the work is aiming to set up the defined
modules or units and actual coding is started. The system is first developed in smaller
portions called units. They are able to stand alone from a functional aspect and are
integrated later on to form the complete software package.
5. Software Test/Verification (Integration):
Each unit is developed independently and can be tested for its functionality. This is the
so called Unit Testing. It simply verifies if the modules or units to check if they meet
their specifications. This involves functional tests at the interfaces of the modules, but
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6. also more detailed tests which consider the inner structure of the software modules.
During integration the units which are developed and tested for their functionalities are
brought together. The modules are integrated into a complete system and tested to
check if all modules cooperate as expected.
6. Operation & Maintenance:
The system is handed over to the customer and will be used the first time by him.
Naturally the customer will check if his requirements were implemented as expected
but he will also validate if the correct requirements have been set up in the beginning.
In case there are changes necessary it has to be fixed to make the system usable or to make
it comply with the customer wishes. All the problems which did not arise during the previous
phases will be solved in this last phase.
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7. GSPM
Uniqueness
:
Advantages:
1. Useful for both beginners and expert’s teams.
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8. 2. Apply on small and big projects.
Disadvantages:
1. GSPM run in a linear way, don’t go back.
2. One time planning.
GSPM
Example:
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9. GSPM is a general software process model and they apply of almost all kind of market
software many software example apply GSPM process model easily like.
1. School management System.
2. Shop inventory System.
3. Software Product (i.e. MS Office).
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10. GSPM is a general software process model and they apply of almost all kind of market
software many software example apply GSPM process model easily like.
1. School management System.
2. Shop inventory System.
3. Software Product (i.e. MS Office).
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