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Ashutosh
Singh http://www.cs.wisc.edu/~ashutosh |
4475 Crocus Dr |
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Objective |
Seeking a senior engineer role in the
area of Information Management and Information Integration |
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Work Status |
Citizen United States 12+ years of experience in the area of
Information Management and Integration. |
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Employment History |
·
Principal Software Engineer Informatica Corporation (Apr 2009 to
current) ·
Advisory Software Engineer IBM Almaden Research Center (Jan 1999 to
Mar 2009) ·
Software Engineer NCR Labs (Jan 1998 to Dec 1998) |
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Educational Qualifications |
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MS University of Wisconsin – Madison 1998 ·
B. Tech IIT Kharagpur India 1995 |
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Technical Qualifications |
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Languages C, C++, Java, Perl, PHP, x86 assembly. ·
Compilers : Visual C++, Borland
C++, Visual J++, IBM Visual Age Java, g++, gcc. ·
Systems/Platforms :Amazon EC2/S3, Hadoop, HDFS, HBASE, Websphere,
Cognos, IBM Data Warehouse Edition, DB2 LUW, Linux, Xen,
VMWare, Sun Solaris/SunOS, HP--UX , DEC OSF/1, SGI
IRIX6.4, Cray Unicos, Windows. |
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Selected Projects |
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Memory Management in the Informatica Platform (Aug 2009 – Current)
Design
and implement the memory manager for the Informatica platform to alleviate
the excessive lock contention due to system memory allocation and
de-allocation calls, limiting scalability in a multi-threaded environment. Collecting
memory at the end of each unit of work also reduced memory leaks, which improved
the platform uptime from 1 day to 30 days. ·
System Memory Allocation Algorithm (Aug 2009 – Current) Evaluate various
memory allocation algorithms and memory chunk size to suit the demands of the
data integration workload, which happens to be very dynamic and has different
size allocations. Choosing too
small of memory allocation chunks will cause excessive locking overhead and
reduce scalability whereas larger allocation chunk size will cause memory
fragmentation. ·
SaaS Analytics, IBM Research (Jun 2008 - Current) Designed and
implemented the prototype for next-gen Business Intelligence Platform using
Software as a Service Model on the cloud infrastructure like Amazon EC2/S3.
BI data servers used were IBM Data Warehousing Engine (DWE) and Cognos on
Amazon Machine Images, to evaluate issues like multi-tenancy, scale out, ease
of management and deployment in that environment. ·
Speedy Point in Time (PIT) Recovery in Databases, IBM Research (Jan 2008 – Current) Working
on a prototype of a smart storage controller that is more aware of database
objects and their physical layout on devices to eliminate redundant backup
images used for PIT recovery. ·
IBM Infosphere Mashuphub,
IBM Research (Jan 2006 – May 2008) Designed and
Implemented a server side mashup platform to do
light-weight Extract Transform and Publish (ETP) using Web 2.0 technologies.
This platform was released as a Product called IBM Infosphere
mashuphub in 2nd quarter of 2008. ·
DB2 XML, IBM Research (Dec 2003 – Dec 2005) Designed and
implemented and performance tested the XQuery and
XML navigations in DB2 engine. I was the component owner for code generation
and XML Navigation components in DB2 XML. ·
Query Sampling in DB2, IBM Research (Dec 2001 – Nov 2003) Designed implemented
and patented the query sampling in DB2 engine. I modified the DB2 kernel
execution model for symmetric multi processor (SMP/Intra Query) parallelism
for sampling to be repeatable. I also worked with the standards to get
TABLESAMPLE clause included in SQL 92 standards. ·
Optimizer hints in DB2, IBM Research (Dec 2001 – Nov 2003) Designed and
implemented a prototype to provide query hints to the optimizer in DB2. ·
Online aggregation and continuous query, IBM Research (Jan 1999
– Nov 2001) Designed and implemented a prototype in DB2 to
perform online aggregation to provide approximate answers to business
intelligence queries by computing running estimates and confidence intervals
from sampled data. ·
Subquery execution infrastructure, NCR Madison (May
1998 -- Dec 1998) Designed and implemented the execution model of
correlated, nested subquery which will facilitate
efficient execution of triggers on active data in Terradata
Object Relational Store. |
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Patents |
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Efficient sampling of a relational database (US Patent 6993516) ·
Method and apparatus for using Java as a stored procedure language
and as an embedded language on a client (US Patent 6477540
) ·
Method for monitoring dependent metric streams for anomalies
(Filed) ·
Method and System for Integrating Information from Data Feeds
(Filed) http://www.springerlink.com/content/n4l5497q60751688/ ·
Nested Navigations for XPath/XQuery
Evaluation (Filed). |
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Publications |
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Andrey Balmin, Fatma
Ozcan, Ashutosh Singh, Edison Ting: Grouping and Optimization of XPath Expressions in System RX. ICDE
Conference 2008:
1507-1509 ·
David E. Simmen, Mehmet
Altinel, Volker
Markl, Sriram
Padmanabhan, Ashutosh Singh: Damia:
data mashups for intranet applications. SIGMOD Conference 2008: 1171-1182 ·
Andrey Balmin, Fatma
Özcan, Ashutosh Singh, Edison Ting: Grouping and optimization of XPath expressions in DB2 pureXML.
SIGMOD Conference 2008: 1065-1074 ·
Mehmet Altinel,
Paul Brown, Susan Cline, Rajesh Kartha, Eric Louie,
Volker Markl, Louis Mau, Yip-Hing
Ng, David E. Simmen, Ashutosh Singh: DAMIA - A Data
Mashup Fabric for Intranet Applications. VLDB Conference
2007: 1370-1373 ·
Kevin S. Beyer, Roberta Cochrane, M. Hvizdos,
Vanja Josifovski, Jim Kleewein, George Lapis, Guy M. Lohman,
Robert Lyle, Matthias Nicola, Fatma Özcan, Hamid Pirahesh, Norman Seemann,
Ashutosh Singh, Tuong C. Truong, Robbert C. Van der Linden,
Brian Vickery, Chun Zhang, Guogen Zhang: DB2 goes
hybrid: Integrating native XML and XQuery with
relational data and SQL. IBM Systems Journal 45(2): 271-298 (2006) |
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Awards |
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Outstanding Technical Achievement Award for IBM Infosphere
Mashuphub ·
Research Division Award for XQuery and XML
Navigation technologies in DB2 ·
Research Division Award for Query Sampling in DB2 ·
First Plateau Invention Achievement Award ·
5 patent application awards at IBM ·
1 patent application award at NCR Labs Madison |
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References |
Available on request |
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