Interests

Education

• M.Tech. (Computer Science), Pune University Computer Science Department, 1995. CPI: 3.83/6.00

  Thesis Title : Implementation of a framework for global data flow analysis
  Guide : Dr. Uday P. Khedkar
  Summary : Bitwise Incremental Data Flow Analysis algorithm was implemented for "Available Expressions Analysis" problem and was integrated with the optimiser (framework) of an optimising compiler, developed at IIT Bombay and ported on DG Aviion 8500 (m88k) machine.

• B.Tech. (Agriculture Engineering), IIT Kharagpur, 1992. CGPA: 7.53/10.00
  

Work Experience

• Consultant - UNM Systems (I) Pvt. Ltd., Pune (June - August 2005)

  Augmented the "UNM NIC Linux driver's virtual memory requirement reduction" solution with support for multiple adapters and transparent handling of big block accesses.

• Consultant - LinSysSoft Technologies Pvt. Ltd., Pune (April - May 2005)

  Implemented a solution for reducing the virtual memory requirement of UNM NIC Linux driver.

• Developer Consultant - Codito Technologies Pvt. Ltd., Pune (June 2001 - Jan 2005)
  • Member of ARC team (June 2004 - Dec 2004)
    • Tweaked uClinux distribution (1.3.4) to integrate use of genromfs and invocation of uClibc configuration in build process. Also tested uClinux port for A5 processor with busybox (pre-1.0).
    • Patched PTXDist (0.6.1) and crosstool (0.28-rc36) to build cross- toolchain (gcc 2.95.3 with uClibc 0.9.26) for ARC 700 and use that to generate Linux image containing an initial file-system image with selected applications. Also provided a facility in PTXDist for selected packets (packages) that allowed user to simply 'make world' to build and integrate them after any change in their configurations.
    • Contributed towards embedded (Linux) BSP/distribution product specification for possible distribution from Codito.

  • Firewire stack for a digital camera (Feb 2004 - June 2004)

    After initial studies eCos was chosen over uCLinux because of hardware resource constraints, and TNF (Firewire stack from Apple) was ported to eCos. My role was to provide DCam config rom and communication with sensor over I2C, and assist in debugging the Firewire stack.

  • Member of "Codito's OS on UMS" team (Aug 2001 - Dec 2004)
    • Gave inputs for Codito's multiprocessor eCos, that went on to become Codito's multiquad multiprocessor DSP OS by 2001 end (further referred as CodOS), to utilize the CMP architecture from Cradle. Later looked at RTOS compliance issues that could/need-to be addressed by CodOS, apart from suggesting/incorporating few space/time code improvements for performance enhancement.
    • Contributed in design of a framework for interoperability between CodOS and eCos. The framework could easily be adapted to interoperate with OSes other than eCos. Later implemented and optimized it for both OSes running simultaneously on UMS chip.
    • Improved the build process and implemented a configuration mechanism based on Linux (2.4.x) configuration tool. Mainly Menuconfig script was modified to provide the needed features.
    • Implemented couple of profiling, instrumentation and regression frameworks aimed at batch mode operation with almost no user intervention, using Tcl, AWK and Bash scripting. Most of these supported auto-resuming, controlling the framework execution via configuration files, user-friendly error checking and logging, and auto-inferring certain execution parameters wherever possible.
      Regression frameworks involving tests execution, also supported timed execution of tests to allow regression to progress in event of a faulty test, and check for erroneous execution of test and dump required processor registers and stacks in readable form.
    • Designed and implemented C macros for OS/tests code for Profiling and Instrumentation frameworks and contributed in design of instrumentation data structures.
    • Designed and implemented methodology, data structures and C macros to update the tests, to allow tests regression frameworks to determine the execution status of tests, in the absence of message printing support in the OS.

  • Member of eCos team (March 2002 - Jan 2005)
    • I was responsible for stabilizing the initial eCos v1.3.1 SMP port for UMS - mainly hal and kernel packages, and later maintaining it in sync with public eCos repository and newer versions of UMS chips, simulator and development tools, optimising the UMS HAL and updating it for inter-operation with Codito's DSP OS - both running simultaneously on UMS chip. In the process I also found/fixed kernel code and couple of tests in public eCos repository that suffered from race conditions under SMP configuration.
    • Added support for using eCos ROMFS for storing static web pages in Goahead webserver.
    • Designed and implemented regression suite for eCos tests using Bash script and Tcl, with features like resume support and timed execution of tests that allowed regression to progress even when some of the tests misbehaved.
    
    During March - September 2002, I also lead three Codito engineer team for an assignment with it's client.

  • Audio codec as virtual device on Linux (July 2001 - March 2002)

    Experiemental work that explored the possibilities of performance gains for VoIP applications on Linux. Some audio codecs were implemented as virtual devices in Linux (2.4.10) and corresponding modifications were made in openh323 libraries to work with these. Test setup included Win2K and Linux hosts. My responsibilities included implementing virtual devices and assisting in openh323 libraries modification apart from leading the team.

• Project Basis Work - Antech Microsystems, Pune (May - June 1995)

  Developed a UNIX command line utility to read/write data files from/to paper tape and deployed it at client site Rolta (I) Ltd., Bombay.

• Lecturer (initially Fellow) - Pune University Computer Science Department (July 1995 - June 2001)
  December 2002 onwards I have been teaching at the department as Visiting Faculty.
  • Taught Computer Graphics, Computer Networks, Concrete Mathematics, Data and File Structures, Database Management Systems, Distributed Operating Systems, Introduction to Programming, Low Level Programming and Operating Systems.
  • Handled system administration responsibilities.
  • Managed "Natural Language Teaching Teacher's Training Program" workshop.

• Visiting Faculty - Inter-disciplinary School of Scientific Computing, University of Pune (May - June 1995)

  Taught C++ and Prolog to MCS batch.

Computer Skills

• Platforms : Cradle's multicore SOC (CRA/UMS), UNM's network processor, Intel 80x86, ARM, Motorola 88000, ARC (A5,A700)


• Operating Systems : eCos, Codito's DSP OS, uCLinux, Linux, DG Aviion, MS-DOS, NachOS


• Languages : C, Assembly Languages (80x86, CRA, UNM), Tcl, Shell, C++, AWK, Perl, Gofer, Prolog, BASIC, Scheme, ForTran


• Packages/Tools : PTXdist, Busybox, Crosstool, GDB, CVS, Bugzilla, Cygwin, LXR, Make, Sed, Linux configuration, Goahead webserver, Opensource VoIP libraries and applications (OpenH323, PWLIb, OhPhone, GnomeMeeting), Latex, Lex, Yacc, Unify-Accel

Scholarships & Other Achievements

• Indian govt.'s boarding scholarship (1983 - 1988)
• Sr. div. NCC 'C' certificate (1991)
• Editor of institute's Hindi magazine at I.I.T. Kharagpur (1991-92)
• Cleared Maharashtra State Eligibility Test for Lecturership (1998)