SDPM - Lecture 7 - Project monitoring and control

Leiden Insitute of Advanced Computer Science

System’s Development and Project
Management –
Project monitoring and control

Prof. Dr. Thomas Bäck

1

Leiden Institute of Advanced Computer Science Dates

Feb. 1 14:45 – 17:30 Introduction, Project Description
Feb. 2 13:45 – 16:30 STEP WISE Approach to Project Planning
Feb. 9 13:10 – 15:45 STEP WISE Approach to Project Planning,
SAVE ENERGY Case
Feb. 15 14:45 – 17:30 Selecting an Appropriate Software Dev.
Approach
Feb. 16 15:15 – 18:00 Activity Planning and Resource Allocation
Feb. 22 14:45 – 17:30 Software Effort Estimation
Feb. 23 13:15 – 15:45 Risk management, project escalation
Mar. 1 14:45 – 17:00 Exam
Mar. 2 13:45 – 16:30 Risk Management, Project monitoring and
control
Mar. 8 14:45 – 17:30 Software Quality Assurance
Mar. 9 13:45 – 16:30 Managing People; Contract Management
Mar. 18 15:00 – 17:00 Trade Fair

Leiden Institute of Advanced Computer Science

Project control - Motivation

!   Project under way …
!   Attention on ensuring progress
!  Monitoring
!  Comparison
!  Revision of plans and schedules

3


Project control - overview

!   The project control life-cycle
!   What’s going on? Collecting control
information
!   Excuses, excuses… Reporting upwards
!   Doing something about it. Corrective action.
!   A continual process !
!  Monitoring against plan
!  Revising plan, if necessary

4


Project control – Responsibility ?
!   Overall: Project Steering Committee
!   Day-to-day: Project Manager
Steering committee Client

Project manager

Team leader Team leader Team leader Team leader

Analysis/design Programming Quality control User documentation
section section section section
5


The project control life-cycle
real world

actions
define collect
objectives data
data
process data implement
information
make
modeling decisions decisions

6


The project control life-cycle
Start
Publish initial plan

Gather project information Publish revised plan
End
Compare progress - targets Take remedial action
Document conclusions

no
Satisfactory?
Review Project
yes
no
Completed ? End Project
yes 7


What needs controlling

!   Technical integrity !   Project may be on time but
!  What tasks have been only because more
completed resources have been used
than were originally
!   Business integrity budgeted
!  Costs of project must be !   Conversely, project may be
less than benefits late because planned
!  Delays in implementation resources have not been
reduce benefits used

8


What needs controlling (cont’d)

!   Quality
!  A task has not really been finished unless the
product of that task is satisfactory
!  Activity reported as finished could need to be re-
worked
!  Testing is difficult to control: depends on an
unknown number of errors

9


The bug chain
Errors
Requirem.
gathering
More errors

Errors
Design Even more errors

Errors
Build

HELP!
Errors Test

10


Data collection

!   Partial completion reporting
!  Common to enhance existing accounting data
collection systems (e.g. time sheets) to meet
needs of project control
!  Asking for estimated completion time

11


Time Sheets
Rechargeable Hours Name: Week ending: 30/03/05

Project Activity Description Hours % Scheduled Estimated
Code this week complete completion completion

P21 A243 Code mod A3 12 30 24/4/05 24/4/05
P34 B771 Document take-on 20 90 6/4/05 4/4/05

Total: 32

12


Data collection

!   Risk reporting – traffic light method
!  Identify key elements for assessment
!  Break into constituent elements
!  Assess each second-level element
•  Red / Amber / Green (Traffic light)
!  Produce overall assessment
•  All second-level assessment -> first-level assessment
•  Review for overall estimate

13


Risk Reporting: Red, amber, green

!   Red not on plan:
recoverable only with
difficulty
!   Amber not on plan:
recoverable
!   Green on schedule

14


Some problems with controlling projects

!   99% completion syndrome
!  Job reported as ‘on time’ until last scheduled week
!  Job reported as ‘99% complete’ for each
remaining week until task is completed
!   Solution?
!  Control on deliverables

15


Further problem

!   Scope creep
!  Tendency for system to increase in size during
development
!   Solution?
!  Re-estimating
!  Change control

16


Progress checklist

!   Tasks completed !   Risk analysis
!   Staffing !  Can identify sensitive
factors that need
!   Scope (more monitoring
requirements)
!   External dependencies
!   Cost of quality
!   Finance

17


Levels of control

!   End-stage assessment
Project board
(event driven)
!   Mid-stage assessment
Checkpoint reports
(time driven, e.g.
Project manager monthly)
(stage manager)
Checkpoint meetings
e.g. weekly

Project team

18


Levels of control
Information Control

Decision-making

Reporting on actions

!   As information goes to higher levels it becomes more
summarized
!   General directives are filled in with operational details
as they filter down
!   Danger of ‘information overload’

19


Collecting project information

!   Sources
!  Checkpoint meetings
!  Time sheets
!  Machine generated statistics, e.g. connect time
!  Internal documents, e.g. error reports

20


Progress report

!   Avoid ‘information overload’
!   Focus on real problems - exceptions to
planned activity
!   Some approaches
!  Graphical representation
!  Highlight problem cases, e.g. RAG (red/amber /
green) indicators

21


Progress report (cont‘d)

!   Achievements in reporting period
!  Tasks that should have been finished
!  Tasks that should have been started
!   Costs - actual costs compare to budgeted
!   Staffing - joiners, leavers, sickness, etc.
!   Risk monitoring - status of identified risks
!   Outlook
!  How things are likely to progress in next period

22


Earned value analysis (EVA)

1. Identify ‘modules’
!  Good if users can recognize these
2. Identify ‘checkpoints’
!  When a phase finishes - should be
specific and measurable
3. Identify percentage durations, e.g.
!  Design 30% , code 25%, test 45%
4. Estimate size/effort for each module
5. When phase is completed for a module
!  That percentage of the project has been ‘earned’

23


Earned value:

!   0/100 technique: EV = 0% until task
completed, then EV = 100%.
!   50/50 technique: EV = 50% as soon as task is
started. 100% when completed.
!   Milestone technique: Based on achievement
of milestones with assigned values.

24


Earned value analysis - example

Module Est. Est. Design Code Test
ID hours hours 30% 25% 45%
(total) (total)
Hours % Hours % Done Hours % Done Hours % Done

A 100 47.6 30 14% y 25 12% y 45 21% n

B 50 23.8 15 7% y 12.5 6% y 22.5 11% y

C 60 28.6 18 9% y 15 7% n 27 13% n

Total 210 100 30% 18% 11%

% Total 59%

% of total (210)
25


Accumulative chart
120

100

80
%
C omplete

Planned
60
Actual
40

20

0
1 2 3 4 5 6 7 8 9 10 11
Week
n umber

26


EVA indicators - cost
!   BCWP Budgeted cost of work performed
!  = earned value EV
!  = The planned (not actual) cost to complete the
work that has been done.
!   ACWP Actual cost of work performed, i.e.
what it actually costs to get BCWP
!  = actual cost AC
!  = Cost incurred to accomplish the work that has
been done to date.
!   Cost variance BCWP – ACWP = EV – AC

27


EVA indicators - schedule performance

!   BCWS Budgeted cost of work scheduled:
!  BCWP that would be achieved if all work had been
finished on time
!  BCWS = Planned Value PV
!  = Planned cost of the total amount of work
scheduled to be performed by the milestone date.
!   Budget variance ACWP – BCWS = AC-PV
!   Schedule variance BCWP – BCWS = EV-PV

28


EVA performance indices

!   Cost performance indicator (CPI = EV/AC)
!  BCWP/ACWP
!   Schedule performance indicator (SPI = EV/PV)
!  BCWP/BCWS
!   CPI=1 – right on track
!   CPI>1 – ahead of plan; cost less than budget.
!   CPI<1 – falling behind.
!   Value for money indices

29

Leiden Institute of Advanced Less work was
Computer Science
performed than … the actual cost
scheduled for it was higher
than budgeted!
Accumulative chart
Now Baseline budget PV
Cumulative Cost %
Planned Value, BCWS

ACWP, Actual Cost to date (AC)
Budget variance AC-PV
Cost variance EV – AC (< 0)
Schedule variance EV-PV

Earned Value EV,
BCWP

Time
CPI = BCWP/ACWP < 1 à NOT Good! Schedule variance (time)
SPI = BCWP/BCWS < 1 à NOT Good!
30


Graphical representation
!   Gantt charts
!  Activity bar chart indicating scheduled activity dates and
duration (and floats)
!  Shading (for schedule completion) and today ‘cursor‘
!   Slip charts
!  Gantt chart plus slip line (bending = bad)
!   Ball charts
!  Circles indicate estimated and actual start and completion
points for activities
!  Green and red shading
!   Timeline charts
!  Recording and displaying changed targets
!  Slipping more clearly visualized!

31


Graphical representation (cont’d)

SA

SD1
SD2

CDR1

CDR2

‘Slip-chart’ red-line indicates position as of today
A very uneven line suggests need for rescheduling
32


Monitoring priorities

!   Critical path activities
!   Activities with no free float
!   Activities with less than a specified float
!   High-risk activities
!   Activities using critical resources

33


Corrective action

!   Tolerance
!  Acceptable margins of overshoot may be specified
in plan
!   Contingency
!  This is not owned by the activity but by the project:
give and take between activities
!   Exception plans
!  Drawn up when the original plan needs major
change: especially change to scope or costs
!  Requires project board authority

34


Some possible actions to recover project

!   Re-schedule, e.g. precedence requirements
!   Make more resources available
!   Redefine scope
!   Modify quality requirements
!   Enhance productivity, e.g. through training,
tools

35


Change control – Task changes !

!   Identification of all items that are subject to
change control
!   Central repository of master copies, project
documentation, and software products
!   Formal set of procedures to deal with change
!   Maintenance of access rights and library item
status

36


Change control – Example
!   Users perceive need for system modification
!   User management considers change request, approves, passes
to development mgmt.
!   Dev. Mgmt. delegates staff member to look at request, report
practicality and cost.
!   Dev. Mgmt. reports back to user mgmt.
!   User mgmt. decides whether they want to go ahead.
!   Developers are authorized to go ahead.
!   Code is modified.
!   User mgmt. is notified on completion, software is released for
user acceptance testing.
!   Operational release when users are satisfied.

37

SDPM - Lecture 7 - Project monitoring and control

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