I like to take plain text notes when I attend lectures, so I thought I'd start sharing them. Please excuse if the earlier ones are bit sketchy.

Computing Lectures

Athens Digital Week 2010

The cacua project (John "maddog" Hall)
- Number one reason for pursuing FOSS is creating jobs (though the other
  benefits ar enice also)
- Everyone cares about children
- 80% of the people in south america live in a n urban environment
	=> internet is not so far away -- maybe only 50 feet away
- "digital inclusion" in Blazilian, "digital divide" in US
- And he's a business man:
	- Gviing a 7yr old a laptop has a ten year payback
	- Retraining an adult  by giving him a laptop is only a 2 year laptop
- Goals
	- Create milliaons of new, private sector high-tech jobs in Latin
	  America, many millions more worldwide
		- High-tech, well-paid, LOCAL jobs
	- Make computers easier to use
	- Make computers more environmentally friendly
	- Decrease cellular wireless contention (interesting...)
	- Create gratis WiFi bubble over urban areas
	- Create low-cost or gratis SuperComputing capability
	- Using sustainable, privaet sector funding ("that's the Republican
	  inside of me coming out . . . because money coming form the
	  government is not sustainable")
- Creating millions of new jobs for system administrators and entrepreneurs
	- enable systems adiminstrators to start own business
		- Business plans
		- Marketing materials
		- Training/ Certification/Guild
	- Vertical Markets: 
		- Show people how to borrow money to finace a new business
		- Not having a boss
	- Provide courses, training, apprenticeships, and get licensed
- Making computers easier to use
	- People waste a lot of time with current technology (losing files,
	  computers being slow because of viruses, and because most people
	  hate computers)
	- 1,250,000,000 desktop comptuers x 15 minutes lost per day @ $5 =
	  $6,250,000,000 a day _because software dosen't work the way it's
	  supposed to_
	- ^ also equivalent of 9 out of 300 people not showing up to work
	  without notice
	  	=> let's make one of those people a systems administrator!
		- and magically the other 8 people would show up
- Thin Client/Server Computing: Timesharing
	- Always had experts around you, either to help or to install programs
	  etc... but then Bill Gates put mainframes on the desktop, yet no one
	  was _trained_ to use those.  Support is now very far away.
	- So:
		- High-avalibility servers in basement of tall buildings in
		  community centers of clusters of bulidings
		- Thin clients connected to server with high-speed networking (1gbit/sec or
		  higher), with no programs/files stored there
		- FAT client/Mac OSX support, but will be charged for it
	- 30% of software in the US is pirated, in Vietnam, 96%
		=> charge people money to have MS Windows/Mac OSX (to be
- Sysadmin duties
	- Maintain server software (monitor usage/integrity, updates, virus
	  elimination, SPAM, backups)
	- Teach classes and give support to end users
	- Negatiate and sell software to end users
- Vertical Markets
	- Small/Medium Business in large office bulidings, typically no
	  sysadimn (this group produces 90% of the wealth in the US))
	  	- produce 90% of the wealth in the US
		- 86% of the people in the US work for these small companies
		- Usually cannot afford a sysadmin... but they could SHARE one
	- Also, apartments, hospitality services (hotels), and Point Of Sale
	  terminals (cash registers)
	- These are all the vertical markets that could be treated
- Specifically: Apartments
	- TV over the internet (more accessible)
	- telephone calls through VoIP
	- security with webcams
	- could all be done in one router, instead of separate units that are
	  expensive, and use a lot of energy
- Hospitality
	- Different units for reservations, room allocation, accounting, ERB,
	  website, POS
	- Could have one unit, to do these and more
- Could do all of this with envirnomentally- friendly computing
	- Power consumption is huge
	- Bad chemicals 
	- "If you threw away every computer in the world today you'd create a
	  mountain higher than the Swiss Alps"
- Long life, "always on" thin client
	- multi-funciotn (with virtualization)
	- USB3.0/eSATA
	- 60GHz Wireless Ethernet, bc up to 7gbit/sec within 30 feet away (and
	  powered through internet)
		- backhaul/heatbeat/power
	- "Femtocel" GSM modem (OpenBTS) because not enough bandwidth, which
	  changes signal from your phone and changes it to TCP/IP
	- OTA Digital TV (cheap, and can use spare channels for downloading
	- All boxes have no moving parts (quiet, no fans, up to 70*C with
	  proper chips) -> long lifetime 9-10 years
	- What happens when I need more CPU power? That's what the server
- example of Invenio, who sells phones in Africa
	- Sells low power chargeable internet/phone systems
	- can be powere by solar panel or by bicycle, and people always choose
	  	- easily replaced
		- cheaper
		- *provide job for person to pedal bicycle*
- Computers are useless when they are off, so we should always keep them on
- "Good for security" to have no data stored on thin client
- Servers
	- Industry standard - low power
	- HA with redundant disks, multiple (10) gbit cabling to thin clients
	- Three sizes, small one is just two thin lients (12 V... because
	  everything in the world actually runs on 12V)
		- "12V is where God intended electricity to be" :)
		- "baby bear" (small version) could be run off of anything,
		stored in a cabin
- Networking
	- Aggregation of telephone feeds, not "1.5Mbits/sec/apartment",
	  instead 300Mbits/sec/apartment house
	- Actually doesn't hurt business, because you only have to sell to one
	  person, lowers support cost
	- Reduced latency over traditional "wireless mesh"
- Free wifie througout urban areas
	- People can use your internet, you can use their internet
	- This model already works (British telecom, Beijing)
- Privacy and stability: everything vrtualized and ecrypted
	- Start punishing people who are actually trying to do bad things, not
	  the ISPs
	- Flexible resources, data can optionall ybe stored on server, cloud,
		- already possible through virtualization
- Large servers in basements are used for extra CPU power.  Depending on
  location, servers can be idle (university servers on a weekend, for
  example), but because these are hooked together with high speed internet,
  servers can borrow CPU power from other servers
- Thin clients will have open circuit design (currently univ in Brazil is
  creating the box)
	- Box will have to be certified
	- Manufacturing is "grunt work", so design is carried out by
	  university, and manufacturing is outsourced to other small companies
	  in Brazil
	  	- If you want to do this in Greece, sure yo ucan do it, and
		  you can alter the circuit board as you wish
- Example for numbers of servers/clients
	- Brasil: 192 million Brasilians, 80% in urban environment, 2 thin
	  clients per person (home and work/school), plus POS terminals
	=> 400 million
	- avg 300 thin clients per server (1.3 million HA servers, 2.6 million
- How much will this cost?
	- thin client, ~200 USD, but made back within about 3 years
	- Pay for high quality, long-life equipment over time (start small and
	  expand as needed)
	- cost will decline over time
- Digital inclusion
	- cheap wifi wireless devices allow aaccess to internet
		- "gratis" and "cloud" computing
	- Train unemployed to be SA/Es
		- single parents
		- physically challenged
		- Takes people off welfare and makes them taxpayers
- How does SA/E affford to buy business
	- Create  an underwriting program to guarantee no risk (for each loan
	  contributes a little to the underwriting fund, so load is equally
- SA/E salary will be 1800 base, for support for 300 thin clientsx$6 per thin
  client per month
  	- Could make more money by side jobs (web programming etc)
- Job should not be too hard, and a lot of tools could be automated (web admin
  tools, etc)
  	- Also will be given training
	- Through a guild program (apprenticeship)
- How do you become a Caua entrepreneur
	- Learn FOSS systems administration, get certified, licensed (by
	  government, ge letters of intent from potential customers to gie to
	  bank, get underwritten loan
- "The harder you work, the more money you make" ("sorry socialist people out
- Timeline
	- Immediate start
	- Next year, starting courses etc
- Project board consists primarily of Brasilians
- www.projectcaua.org
- "Do not undertake a project unless it is manifested in importance and almost