1.
S. P. T. Krishnan
Institute for Infocomm
Research, donorweb

2.
Contents
• About me 
• Open Source Software (OSS)
– Desktop
– Workstation
– Server / Infrastructure
– High Performance Computing (HPC)
• Case study
– Donorweb.org
10-May-08 UNISIM OSOM SEMINAR 1 2

3.
About me
• Senior Research Engineer
– @ Cryptography and Security, I2R
• RHCE of the year 2007, APAC
• PSSA 2004 nominee
• 10+ years experience
– Windows kernel hacking (MS thesis)
– Open source ecosystem (I,D,E) experience
• PhD (part-time), High Performance
Computing
10-May-08 UNISIM OSOM SEMINAR 1 3

4.
RHCE, PSSA
10-May-08 UNISIM OSOM SEMINAR 1 4

5.
Disclaimers
• Personal view
– Does not represent I2R, or Singapore Red Cross
or donorweb
– Based on personal experience
• Tip of the Ice berg of OSS
– Most useful software
– Least resistance path
10-May-08 UNISIM OSOM SEMINAR 1 5

6.
END (NON-TECHNICAL) USER,
DESKTOP
10-May-08 UNISIM OSOM SEMINAR 1 7

7.
Common misconceptions
• I have always used Windows
– Why should use Linux ?
• I have only coded in Visual Basic !
– Why learn another language ?
Is Linux tough to learn and use ?
•
Don’t I get a GUI ?
•
What is a shell ?
•
I don’t know where to start
•
Do I have to remove Windows to use Linux ?
•
10-May-08 UNISIM OSOM SEMINAR 1 8

8.
Desktop
1. Email
2. Surf
3. Edit
4. Office
5. Chat
6. Image
7. Music
8. Video
10-May-08 UNISIM OSOM SEMINAR 1 9

9.
Software developer
WORKSTATION
10-May-08 UNISIM OSOM SEMINAR 1 10

10.
Workstation - 1
• Open source language programming
– What is wrong with VB/VC++ programming ?
• Why do I need to program for multiple OS ?
– Platform specific languages limit market size
– OSX is rising, Linux is default OS in many
products
– Smart phones (Nokia sold 10M N95s in 1 year)
– New device form factors (internet tables)
– Open Standards
10-May-08 UNISIM OSOM SEMINAR 1 11

11.
Workstation - 2
1. Code
2. Compile
Virtualization
3. Execute
4. Debug
5. Deploy
6. Document
7. Store
10-May-08 UNISIM OSOM SEMINAR 1 12

12.
Workstation - 3
• Complete GNU/Linux OS
– Minus raw device access
• Servers
– All software services
(Web, Email, FTP etc)
– Router 
• Share with Friends (In
real time)
• Dual-boot Linux
– Virtualized Windows
– Minor driver issues (still
OK)
10-May-08 UNISIM OSOM SEMINAR 1 13

13.
Programming languages – w4
• Windows developer
– VB, VC++, C#, .NET
– Platform specific (-ve)
C, C++, JAVA
•
Perl
•
Python
•
PHP
•
Ruby
•
10-May-08 UNISIM OSOM SEMINAR 1 14

14.
Frameworks, IDE – w5
• .NET (Mono)
• Perl
(Catalyst, Maypole
• PHP (CakePHP, Code
igniter, Akelos)
• Python (Django)
• Ruby (Ruby on Rails)
• IDE (eclipse, komodo)
• GUI (GNOME,KDE)
10-May-08 UNISIM OSOM SEMINAR 1 15

15.
THE COMPUTING SPECTRUM
10-May-08 UNISIM OSOM SEMINAR 1 16

16.
OSS in
INFRASTRUCTURE
10-May-08 UNISIM OSOM SEMINAR 1 18

17.
*admin – 1
• OS
• DB engine
• Email
server
• Web server
• App server
• Blog/News
• Forums
10-May-08 UNISIM OSOM SEMINAR 1 19

18.
*admin - 2
CMS
•
CRM
•
ERP
•
UTM
•
UC
•
– VOIP
– CHAT
– EPABX
• Directory
• Backup
10-May-08 UNISIM OSOM SEMINAR 1 20

19.
*admin - 3
http://www.voip-info.org/wiki-Open+Source+VOIP+Software
10-May-08 UNISIM OSOM SEMINAR 1 21

20.
CASE STUDY
DONORWEB
10-May-08 UNISIM OSOM SEMINAR 1 22

21.
Donorweb – 1
Official Singapore Blood Stock Indicator
•
Official Bloodmobiles list
•
Emergency SMS Gateway
•
R3C (International project)
•
Blog, Forums, Groups, Pledge, Quiz
•
Awards & Recognitions
•
– E-Innovator award from Singapore Government
– PSSA 2004 nomination
– Sponsorships
10-May-08 UNISIM OSOM SEMINAR 1 23

22.
Donorweb – II, CORE
10-May-08 UNISIM OSOM SEMINAR 1 24

23.
Donorweb – III, Software Stack
7
6
5
4
Cost (S¢)
3
Capacity (MB)
2
1
0
10-May-08 2 UNISIM OSOM SEMINAR 1 25
1 3 4

24.
10-May-08 UNISIM OSOM SEMINAR 1 26

25.
10-May-08 UNISIM OSOM SEMINAR 1 27