w Waruna Ranasinghe

Technical Skills

Programming Languages: C, CUDA, Java, Shell Scripting

Standards and Specifications: OpenMP, MPI, SOAP, WS-BPEL, WS-HumanTasks, BPEL4People, WS-*

Operating Systems: Linux, Windows

Development Tools: Git, Subversion, Make, Ant, Maven, NVIDIA Nsight

Education

• Colorado State University

M.Sc. in Computer Science

Fort Collins, CO

arunapww@gmail.com • (970) 286-4238

Aug, 2012 - December, 2014(expected)

– Current GPA - 3.904 (out of 4.0)

– Active member of the mèlange research group focused on automatic compiler techniques for parallel

computing

• University of Moratuwa

B.Sc. in Computer Science and Engineering

– Graduated with a first class honors with an overall GPA of 3.89 (out of 4.2)

Professional Experience

• Colorado State University

Graduate Teaching Assistant

Fort Collins, CO

Moratuwa, Sri Lanka

2005 – 2009

Aug 2012 - Dec 2012, Sept 2013 - Dec 2013

– CS475 - Parallel Programming

– Used knowledge in parallel programming (OpenMP, MPI, CUDA, C) to conduct lab sessions, discussion

groups and to grade assignments

Graduate Research Assistant

Jan 2013 - Aug 2013, Jan 2014 - present

• WSO2 Inc.

– Mentored an undergraduate research assistant on measuring peak performance of GPUs

Associate Technical Lead

– Worked on research projects related to parallel computing

– Conducted knowledge transfer sessions onCUDAprogrammingand performanceoptimizations onGPUs

to help out new grad students

Colombo, Sri Lanka

April, 2009 - July, 2013

– Lead WSO2 Business Process Server team for one year, delivering 1 major product release and several

minor releases

– Designed and implemented WS-BPEL extension support in WSO2 Business Process Server

– Designed and implemented WS-BPEL Extension for People (BPEL4People) and WS-HumanTask specification

support in WSO2 Business Process Server

– Conducted trainings and workshops on Business Processes and Human Tasks

• Millennium IT Software (Private) Limited

Software Engineering Intern

– Participated in several on-site and off-site client engagements helping with system deployments, fine

tuning, trainings and proof of concept development

Malabe, Sri Lanka

October, 2007 - April, 2008

– Implemented a MySQL wrapper for data management

– Implemented benchmarks to measure unformatted hard disk read/write speeds

Open Source Contributions

• Apache Software Foundation

Committer, Apache ODE Project

Oct, 2011 - Present

– Apache ODE executes and manages business processes written following the WS-BPEL standard

Projects

• An energy efficient implementation for wavefront parallel algorithms for GPUsColorado State University

C, CUDA, Shell Scripts, NVIDIA Nsight, NVIDIA Profiler

– Standard implementation has a kernel call per wavefront which leads to poor locality, so that, higher

number of global memory transfers which increase energy consumption

• CPU and GPU benchmarks

C, CUDA, Shell Scripts, NVIDIA Profiler

Colorado State University

– Micro-benchmarks to quantify performance metrics in CPUs and GPUs

  ∗ Measured achievable peak operations per second for different types of operations

  ∗ Measured energy consumption for operations in GPU

• Execution time and energy modeling for GPU

C, CUDA, GPGPU-Sim

• SEQUAL++

Colorado State University

– Came up with execution and energy models for a specific class of programs called stencils

– Validation of models using results from micro-benchmarks, experiments and simulation tools

Python, Shell scripts

Colorado State University

– Merged the corresponding reads into BWA alignment and ran SEQUEL on modified data

• Distributing Stanford Stream Data Manager

C++

– Distributed the input data stream among a cluster of machines

• Parallel framework for short rate models in finance

C/C++, MPI, MySQL, MPICH2

– The purpose of the project is to improve the quality of DNA contigs (sequences)

– Extracted the DNA reads from SPAdes assignment corresponding to the low coverage regions in BWA

alignment

Colorado State University

University of Moratuwa

– Parallelized three main short rate models (GBM, Vasicek, CIR) in financial mathematics

– Implemented a server to handle requests from clients ( i.e. MS Excel plugin). Server consisted of a thread

pool and handedover request to the computing cluster

Awards and Merits

• University of Moratuwa

Colombo, Sri Lanka

– Earned placement in Dean’s list in six out of seven semesters by maintaining a GPA over 3.8

– Ranked 9th in the batch (of 100 students) specialized in Computer Science and Engineering in 2009

– Received university colors for Badminton

– My implementation only uses one kernel call for the entire program which improves locality, therefore,

reduce energy consumption