ICT4D course 2013 - Low resources infrastructure


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ICT4D course 2013 - Low resources infrastructure

  1. 1. ICT4D Christophe Guéret (@cgueret)ICT infrastructure in low resources setting http://bit.ly/ICT4D-Infrastructure
  2. 2. What to expect from this lecture● Overview of low-resource infrastructures● Introduction of some technological solutions● Highlight of "do"s and "dont"s
  3. 3. Where? countries with low incomeWorld Bank projects http://maps.worldbank.org/
  4. 4. Where ? schools, villages, ...
  5. 5. ICT here and there● Same data needs and expectations but... ○ Here: push technology, usage will follow ○ There: spot usage and find matching technology● Direct implications to keep in mind: 1. The best infrastructure is not necessarily the one with the highest specifications ! 2. Cloning what we enjoy here will most probably not work there !
  6. 6. Technology enhanced communication● Several elements are implied● Need to pay attention to all of them in their context Software Software Computing device Computing device Network
  7. 7. Embedding the users Software Software Computing device Computing device Network
  8. 8. Two types of deployment● Bring the ICT to the users, or the inverse
  9. 9. Bring the users to the ICT● Examples ○ Community computer center (Video) ○ Internet café ○ "Computer room" in schools● Advantages ○ One installation impact many users ○ Centralisation of infrastructural needs● Disadvantages ○ Concentration of valuable items ○ Typically high installation costs ○ Harder to embed into culture / habits
  10. 10. Bring the ICT to the users● Examples ○ "One Laptop per Child" initiative ○ Smart phones and tablets● Advantages ○ "Personal" relationship with the device ○ De-centralisation of resource usage● Disadvantages ○ One device per person ○ Higher deployment costs
  11. 11. Whats best to do?● Very much depending on the context ○ Easy access to a central location? ○ What kind of usage for the devices?● It is possible to hybridise the approaches ○ e.g.: use laptops and print in a cyber-café● Also think of embedding other communication channels ○ prints ○ USB sticks ○ ...
  12. 12. Use local expertise and materials● In any case, remember that ○ Devices will have to be serviced on spot ○ Training individuals to operate something is costly ○ Not everything is available everywhere ○ Uptake will be better from involved communities● Thus, to increase chances of success ○ Source material locally as much as possible ○ Source expertise locally as much as possible ○ Ensure appropriation of what is deployed● "Colonialism 2.0"
  13. 13. Example: baby incubator [1,2] ● Ship baby incubator to developing countries ● Big failure ○ $40000 per unit ○ Hard to find spare parts ○ Closed design ○ Need skilled staff
  14. 14. Example: baby incubator [1,2] ● Build baby incubator in, and for, developing countries ● NeoNurture ○ $1000 per unit ○ Car parts ○ Open design ○ Need staff able to repair and use a car
  15. 15. Example: baby incubator [1,2]
  16. 16. Example: laptops for children ● Failure ○ Fragile ○ Expensive ○ Demanding ○ Unfit software
  17. 17. Example: laptops for children
  18. 18. Example: charging station● Goal: rack and charge several laptops● What would you suggest ?
  19. 19. Example: charging station Solution [3]: PVC ● Inexpensive and accessible ● Can be assembled by anyone
  20. 20. One last word about local expertise Two skilled technicians servicing their broken laptops
  21. 21. Electricity Software SoftwareComputing device Computing device Network
  22. 22. Electricity consumption● Some of the things to power up ○ Power supply ○ CPUs and GPUs ○ Screens / Lights ○ Printing devices ○ Storage devices ○ Networking devices ○ Cooling devices● Get electricity from ○ The grid (Solar, Wind, Nuclear, Tidal, ...) ○ Local production (Solar, Fuel, ...)
  23. 23. Consumption of a CPU● Varies a lot depending on the CPU class and internal architecture (Intel / ARM)● Indicated through the TDP value Server Desktop Netbook Smart phone 69 to 150 W 19 to 73 W 0.65 to 13 W 0.5 to 2 W
  24. 24. Consumption of a Screen● Varies depending on the technology 0.4 to 1.7 W http://pixelqi.com
  25. 25. Consumption of storage device● Essentially depends on the technology● Not having movable parts is better
  26. 26. Using electricity from the grid ● Pluses ○ Stable, and affordable, source ● Minuses ○ High throughput of generation point ○ Significant infrastructure costs ○ Electricity does not travel well -> hard to connect remote areas
  27. 27. Local production ● Pluses ○ Easy to deploy ● Minuses ○ Less stable than grid ○ High initial costs
  28. 28. More about solar power ● Estimated 1000W per m2 ● Actual up to 200W per m2 ● Better bet on less in practicehttp://www.alternative-energy-news.info/technology/solar-power/
  29. 29. Network Software SoftwareComputing device Computing device Network
  30. 30. Sending a message from A to B● In theory, like the post : wrap the message and send it to the address of B● In practice this is not so simple ○ First,find the address of B ○ Then, send the message through a relay of machines and connections● Lets see what happen when "univ-tours.fr" is typped in a Web browser ...
  31. 31. Find the address of "univ-tours.fr"● This has to be translated into "", the actual address of the machine● Use the DNS system to do that ○ Ask the root server ".fr" for the address of "univ- tours" ○ Ask "univ-tours" for its default host address● Such names are called TLD and have to be paid for (roughly 15 euros per year)
  32. 32. Ask for the Web index page● The Web browser sends a request for "index.html" to the port 80● Goal: send the request from a machine in the Netherlands to another (probably) in France● See what actually happens with the tools "tcptraceroute" and "traceroute"
  33. 33. What happens in practice...● The Web browser sends a request for "index.html" to the port 80●
  34. 34. Why ?● Internet is a network of networks● Several routes can connect two devices● Traffic is agglomerated on several levels● ISPs exist for each level
  35. 35. Going around the continents http://www.submarinecablemap.com/
  36. 36. and connecting citieshttp://www.lilobzh.com/free/article-degroupage.php#idf
  37. 37. Why does it matter in ICT4D ?● Let two farmers in Mali send a mail to each other implies a couple of regional servers● If they want to use GMail, a backbone connection to the US west coast will also be involved !● Consequences ○ Web-based social networking can hardly be local ○ The costs for the end user is likely to be high ○ ( Cloud computing is incompatible with ICT4D )
  38. 38. Good news! transit prices are falling http://www.telegeography.com/research-services/global-internet-geography/index.html
  39. 39. Ok, so what can be done ?● Research on Downscaling the Semantic Web will bring data sharing to everyone, regardless of Internet connectivity ○ https://worldwidesemanticweb.wordpress.com/● Creating mesh networks is a first step into connecting devices
  40. 40. Mesh VS Infrastructure network
  41. 41. How to choose● Reasons to prefer a mesh network ○ More robust ○ Faster to deploy ○ Example: Sensors network● Reasons to prefer an infrastructure network ○ Better for the quality of service ○ Shared installation costs ○ Example: Universities WiFi● It is also possible to combine the two
  42. 42. Connecting remote areas● Long wires ○ Use optic fiber and/or copper wires● Long range Wireless ○ Use WiFi technology (IEEE 802.11b) to connect relays over long distance ○ Network technologies 2G (GSM), 3G (WCDMA, EDGE) and 4G (LTE, WiMax) are licenced● Sneaker net ○ Use removable media to move information among storage devices
  43. 43. Indias rural networkhttp://www.cse.iitk.ac.in/users/braman/dgp.html
  44. 44. Island of "Nosy Komba"http://www.olpcnews.com/hardware/wireless/olpc_frances_long_dist
  45. 45. Whats up with USB sticks then?Latency Throughput
  46. 46. Hybrid solution http://www.firstmilesolutions.com/documents/DakNet_IEEE_Computer.pdf
  47. 47. Computing devices Software Software Computing device Computing device Network
  48. 48. What to pick?● Keep in mind three things ○ The context of usage (dust, humidity, sunlight, ...) ○ The target users ○ The target use-cases ○ The resources needed● The computer you have at home is most probably not the one you would use in a developing country● There exist some optimized hardware
  49. 49. The Classmate from Intel ● Rugged ● Touch screen ● Handle ● Speakers ● Microphone ● Camera
  50. 50. The XO-1.75 and XO-4 from OLPC ● Use a couple of Watts ● User-defined sensors ● Accelerometer ● Light sensor ● Camera ● Rugged ● Speakers ● No movable part ● Microphone
  51. 51. SheevaPlug from GlobalScale ● ARM based CPU ● Ethernet, WiFi ● Solid state memory ● USB ports ● Here used as an e- book server
  52. 52. T1 from Aleutia● Sealed and fanless● Operate under 45oC● Atom processor● SSD disk
  53. 53. A note on thin clients● Thin client = very lightweight PC that outsources all the computing to a bigger one● Was among the first model of computing (e. g. IBMs AS/400). Still popular in classrooms settings thanks to its advantages● Getting a new life with the increase of Cloud computing (c.f. Googles ChromeBook)
  54. 54. Software Software SoftwareComputing device Computing device Network
  55. 55. Total cost of ownership (TCO)● Total cost of acquisition and operation● Computed over the expected operation timeExample: TCO of a car = car + parking place +fuel + insurance + driving license + ...For ICT: hardware + software + skilled staff +infrastructure (electricity, network) + ...
  56. 56. TCO surprises● Standalone data storage solution (NAS) is often less expensive than a PC with software RAID● Inkjet printers can be more expensive than laser printers
  57. 57. Things to keep in mind● Think of the TCO when picking up software ○ Maintenance/Development is costly ○ Things that dont work now will be left aside ■ Remember the target users are not geeks!● See how fit the software exactly is ○ Are vocal interfaces needed?● Consider to which extent users can appropriate and customise the software
  58. 58. Suggestions● Prefer affordable and supported software ○ Individuals have few money but dont mind spending it on things that matters● Prefer open source software ○ Highest level of appropriation level● Prefer software using open standards ○ If the software changes, the data can still be used
  59. 59. Sugar learning environment
  60. 60. To summarise ...
  61. 61. When you consider ICT in lowresources setting● See what is already working and think how ICT can be improve part of communication● Think of all the side things ○ cost, environmental conditions, ...● Design carefully your use-cases● Employ appropriate hardware and software