1. Wireless Communications in Parallel Computation using MPI CS 603 – Summer II 2003 Project Progress Proposal Wireless Communications & Networks Dr. Ajay Gupta Sathya Priya Durairaju

2. Agenda Introduction Issues with integrating Mobile Devices in Grid Computing Suggested Solution Testing with MPI References Questions

3. Introduction History – Usage of mobile devices increasing – Power of mobile devices advancing – The Grid Architectures – Proxy-Based – Multi-Level Dispatcher Current Work

4. Definition of “The Grid” Parallel Programming: 2 or more working entities for a better performance Co-ordinated, transparent and secure sharing of IT resources, high-end computers, networks, databases, and scientific instruments across geographically distributed sites. Grids are built on standards-based interoperability to deliver integrated solutions that allow virtual collaboration. An analogy with the electric power grid (Electric power is ubiquitous)

5. Proxy-Based Architecture

6. Multi-Level Dispatcher Architecture

7. Addressed Issues M-device information in AP-dispatcher AP-dispatcher information in M-dispatcher Mobile-allocation Buffering to store intermediate results in AP-dispatcher Convincing m-device owners

8. Issues to be Addressed Intermittent Communication Execution Resume Problem Congestion at M-dispatcher and AP- dispatcher Implementation and/or simulation

9. Issues Currently being Addressed Intermittent Communication – When a M-device comes with a range of an AP, what happens? – When a M-device leaves the range of an AP while receiving information, what happens? – When a M-device leaves the range of an AP and moves into the range of another AP while receiving information, what happens?

10. Issues Currently being Addressed (Contd..) MD1 is connected to AP1 MD1 moves into the range of AP3

11. Issues Currently being Addressed (Contd..) Implementation Using MPI (Message Passing Interface) – Check communication between grid and M-devices – Check for mobility aspects Architecture of different Wireless technologies/protocols – Bluetooth – 802.11b – 802.11a – 802.11g

12. References [1] Phan, T., Huang, L., Dulan, C.Challenge: Integrating Mobile Wireless Devices Into the Computational Grid. MOBICOM’02. September 23-26, 2002. [2] William Stallings. Wireless Communications and Networks. Prentice-Hall, Inc. 2002 [3] Hwang, K., Xu, Z. Scalable Parallel Computing. McGraw-Hill International Editions 2000. [4] The Message Passing Interface (MPI) standard. http://www-unix.mcs.anl.gov/mpi/ [5] Introduction to Bluetooth. http://www.xilinx.com/esp/bluetooth/tutorials/intro.htm [6] Bluetooth Architecture Overview. http://www.intel.com/technology/itj/q22000/articles/art_1.htm [7] TCP/IP Network Administration. http://www.soldierx.com/books/networking/tcpip/index.htm

13. Questions