Santosh Kumar Mahapatra
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| Interest: |
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Computer networks, interconnection networks,
high performance computing (HPC) clusters, data centers,
parallel architectures, storage area networks, and related
simulation design and software development.
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| Education: |
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Ph.D., Computer Science, Florida State
University, Tallahassee, Florida |
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Internship, Los Alamos National Laboratory,
Los Alamos, New Mexico |
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B.S., Electronics and Telecommunications Engineering,
Bengal Engineering and Science University, West Bengal, India |
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| Research Summary: |
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Proposed new routing schemes, evaluated and
improved performance of various single and multi-path
routing schemes on:
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Conventional topologies like extended
generalized fat-tree (XGFT), hypercube, torus
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Recently proposed ones like dragonfly,
jellyfish
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Implemented the routing schemes and the
topologies in:
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Flow level network simulator,
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Flit-level Infiniband network simulator
with congestion control mechanism,
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Packet-level network simulator with
TCP/IP flow-control
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| Internship: |
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Worked with the Ultrascale Systems Research(USRC) at Los Alamos
National Laboratory(LANL) on interconnection networks research
covering several aspects of networking design with a focus
on topology and routing.
Performed an exhaustive evaluation
of the existing topologies and routing schemes to identify
the best interconnection network technologies for the next
generation super-computers.
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| Softwares Written: |
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Flow-level Network Simulator in C:
Network simulator with support for extended
generalized fat-tree (XGFT), hypercube, torus
topologies and the recently proposed ones like the
dragon-fly and jellyfish; various single-path and
multi-path routing schemes compatible with the
topologies.
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Flit-level Infiniband Network Simulator in C++:
Flit-level Infiniband network simulator with support
for (XGFT), torus, hypercube, irregular topologies
and various single-path and multi-path routing schemes;
implemented Congestion Control mechanism as in the
Infiniband architecture.
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Packet-level Network Simulator with TCP/IP
features in C++: Packet-level network simulator with
flow-control of TCP/IP on XGFT to study routing in
the data center environment.
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Little Computer 2008 Simulator in C:
"Little Computer 2008" including the assembler and
cache with support for eight instructions set and including:
- In-order instruction execution for
5-stage pipelined architecture
- Out-of-order instruction execution for
Intel Pentium Pro like architecture
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Interactive linux shell in C:
Developed an interactive linux shell
supporting a limited set of commands
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FAT12 file system in C:
Implemented a FAT12 file system to
read a floppy drive
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Network Emulator in C and BSD Sockets:
Network emulator using the client-server unix socket programming paradigm.
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Messenger Application in C++ and BSD Socket:
A messenger application using client-server unix socket programming paradigm.
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Study of parallel I/O on High Performance Computers.
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| Teaching Experience: |
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Taught the following classes:
- Intro to C++
- Network Security
- Automata Theory
- Computer Fluency
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Managed the help desk setup in coordination
with other teaching assistants.
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Received the
Outstanding Teaching Assistant
Award in 2012.
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| Professional Work Experience: |
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Development of e-Governance Portal:
Development of a bilingual portal (English and Bengali)
for the Government of West Bengal, India for an
efficient Government to citizen(G2C) interface.
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Organization Development for Government of West Bengal:
Research and analysis of the existing processes of
the Government of West Bengal, India leading to
process re-engineering, recommendations and
preliminary cost assessment for the information
technology infrastructure development.
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Comprehensive Treasury Management Information
System (CTMIS):
Design and development of the Treasury Management
and Information system with recommendations
pertaining to the network architecture for
efficient deployment of the system.
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Oracle Retail Store Systems (RSS):
Development of the system that enables the handheld devices (
PDAs) to interact with the data servers for "soft"
real time transactions. RSS empowers store personnel
to sell, service, perform typical back-office
functionality on the store sales floor and
personalize customer interactions leading to
greatly enhanced and improved customer service,
lower inventory carrying costs and fewer markdowns.
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Oracle Retail Allocation (RA):
Maintenance and customization
of RA for allocation of products to stores from
the warehouses using a heuristic approach to achieve
an optimal solution in reducing the costs
incurred due to inefficient inventory management.
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Oracle Retail Integrated Store Operations (ISO):
Customization of the Integrated
Store Operations (ISO) to the client requirements in
alignment with its business needs.
The project involved customization to
the Point of Sale system and the Store Inventory
Management systems and the integration among them.
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| Courses Taken at FSU: |
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- OOP & Data Structures
- Data/Computer Communication
- Principles of Operating Systems
- Mobile Programming
- Advanced Networking
- Network Security
- Computer Architecture
- Parallel and Distributed Systems
- Advanced Unix Programming
- Advanced Algorithms
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| Papers and Publications: |
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- X. Yuan, S. Mahapatra, S. Pakin, and M. Lang,
"LFTI: A New Performance Metric for Assessing Interconnect Designs for Extreme-Scale HPC Systems,"
the 28th IEEE International Parallel & Distributed Processing Symposium (IPDPS), Phoenix, Arizona, May 19-23, 2014.
- X. Yuan, S. Mahapatra, W. Nienaber, S. Pakin, and M. Lang,
"A New Routing Scheme for Jellyfish and its Performance with HPC Workloads,"
ACM/IEEE International Conference for High Performance Computing, Networking, Storage, and Analysis (SC), November 18-21, 2013.
- X. Yuan, S. Mahapatra, M. Lang and S. Pakin,
"RRR: A Load Balanced Routing Scheme for Slimmed Fat-trees,"
International Parallel & Distributed Processing Symposium (IPDPS)
workshop on Communication Architecture for Scalable Systems (CASS), 2013.
- S. Mahapatra, X. Yuan and W. Nienaber,
"Limited Multi-path Routing on Extended Generalized Fat-trees,"
the IPDPS workshop on CASS, May 2012.
- W. Nienaber, S. Mahapatra, and X. Yuan,
"Improving Performance of Deterministic Single-path
Routing on 2-Level Generalzied Fat-trees,"
the IPDPS workshop on CASS, May 2011.
- S. Mahapatra and X. Yuan,
"Load Balancing Mechanisms in Data Center Networks,"
the 7th International Conference & Expo on Emerging
Technologies for a Smarter World (CEWIT),
September. 2010. (invited)
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Santosh Mahapatra, Xin Yuan, and Wickus Nienaber,
"Limited Multi-path Routing on Extended Generalized Fat-trees,"
Technical report.
http://www.cs.fsu.edu/research/reports/TR-111220.pdf
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Wickus Nienaber, Santosh Mahapatra, Xin Yuan,
"Routing Schemes to Optimize Permutation Performance on InfiniBand Interconnects with 2-Level Generalized Fat-tree Topologies,"
Technical report.
http://www.cs.fsu.edu/~xyuan/paper/103.pdf
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| Professional Membership/ Affiliations: |
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- IEEE
- Golden Key International Honour Society
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