Igor Wodiany

igor (dot) wodiany (at) manchester (dot) ac (dot) uk

Member: IEEE, IEEE Computer Society, IEEE Signal Processing Society

Computer Science PhD student in the Advanced Processor Technologies (APT) group at the University of Manchester specializing in High Performance Computing (HPC). My research is focused around compiler and runtime optimizations, and profiling for explicit parallel programs. List of my publications can be found on my Google Scholar profile and some of my contributions in the pepperpots organization on GitHub. I have previous industrial experience in vectorizing and parallelizing applications especially with focus on real time applications and signal processing. It includes writing modern C++ code with use of Advanced Vector Extension (AVX) intrinsics and CUDA.

ORCID 0000-0002-7682-5581


Experience

Graduate Teaching Assistant

The University of Manchester

Marking assignments and assisting academic staff with running undergraduate laboratories in the Department of Computer Science. Teaching assistant for following modules: System-on-Chip Design, Processor Microarchitecture, Operating Systems and Microcontrollers

September 2019 - Present

Performance Optimization Engineer

Five AI

Summer intern working on lossless image compression for self-driving cars. Developed a highly optimized CPU and GPU encoder and decoder based on the JPEG standard that achieve a real-time performance reducing the size of data saved to the storage device.

June 2019 - September 2019

Wireless Software Engineer

Intel Corporation

Implemented and optimized physical layer algorithms for LTE and 5G NR networks on Intel Architecture using the AVX instruction set in C++. Designed and implemented test framework and Python automation for the project that sped up the delivery process. Developed Matlab simulation of physical layer functions.

July 2017 - August 2018

Hardware Engineer

The University of Manchester

Vacation position at the School of Computer Science. Developed, tested and documented drivers for school's Spartan-6 FPGA experimental boards used for teaching. Got exposed to design and verification of sequential systems and Cadence software. Developed drivers for HD44780 LCD display, LED matrix and I2C devices. Soldered boards and created technical documentation.

June 2016 - August 2016

Education

The University of Manchester

PhD Computer Science

Postgraduate research student in the Advanced Processor Technologies (APT) Research Group in the Department of Computer Science supervised by Dr Antoniu Pop. Research focus on compiler and runtime optimizations, and profiling for explicit parallel programs.

2019 - 2022

The University of Manchester

BSc (Hons) Computer Science with Industrial Experience

First Class (86%)

Third year project: "Low-Precision Neural Network Decoding of Polar Codes"

Elected Student Representative at Student Staff Committee in years 2015/16, 2016/17 and 2018/19. Study focused on on mobile systems and networks, computer architecture and microarchitecture, System-on-Chip design and algorithms.

2015 - 2019

Liceum Ogólnokształcące nr III im. A. Mickiewicza

High School

Avergae: 4.75

Studied wide range of subjects such as Mathematics, Physics, Computer Science, Chemistry, Biology, Geography, History, Social Sciences and languages. Mainly focused on Mathematics, Physic and Computer Science. Represented school in regional competitions.

2011 - 2014

Volunteering

CS Peer Support Coordinator

The University of Manchester

Co-organising Peer Support sessions for around 250 2nd year Computer Science students. Planning weekly activities to help students with their studies and finding an employment. Engaging with school staff to get required support and improve students’ experience.

June 2018 - June 2019

Hackathon Director

HackSoc Manchester

Co-organized four events in Manchester with total of 1000 participants. Managed finances, logistics and relations with external companies. Raised sponsorships and supervised multiple teams working on the event.

April 2016 - November 2018

Skills

Programming: C++, C, Python, Java, Assembly, CUDA, Bash, OpenMP
Tools & Technologies: Git, Verilog, Matlab, Cadence, LaTeX, LLVM
Operating Systems: Linux
Other: Code Vectorization, GPGPU
Languages: English, Polish

Publications

Low-Precision Neural Network Decoding of Polar Codes

IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) 2019

Neural Network (NN) polar decoders have been getting much attention as a viable replacement for conventional decoders in 5G New Radio (NR). Despite scalability issues, the NN-based decoder is a promising technology as it can improve the latency of the standard Successive Cancellation (SC) decoder. It was shown that the Neural Successive Cancellation (NSC) decoder has an improved theoretical latency compared to the standard SC decoder. However, in contrast to SC, the NSC decoder uses large floating-point weight matrices which do not fit in CPU caches, leading to higher energy usage and lower computational performance due to the increased memory traffic. Additionally such higher memory requirement would be expensive to implement in hardware and require complex floating-point arithmetic. This paper presents a new low-precision NN decoder that can replace memory-heavy NN decoders inside the NSC decoder. We show that up to 54 times weights’ size reduction can be achieved with the wireless performance degradation varying between 0.1dB and 0.4dB compared to the floating-point implementation. Moreover, we show a reduction of up to respectively 438× and 555× in L1 and L2 data cache misses in our prototype software implementation.

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Awards

  • The Global Undergraduate Awards: Highly Commended
    Awarded in the category of Computer Science for being in the top 10% of all submissions (3437 entries).
  • President's Doctoral Scholar Award
    The PDS Award gives the most outstanding students from across the UK and from around the world a foundation to support research training with prominent academics across a full range of subjects.
  • Certificate of Excellence
    This prize is awarded to the top 10% of graduating Computer Science students based on final degree average.
  • Head of School Award
    Award for outstanding contribution to the life of the School of Computer Science.
  • Outstanding Contribution to Peer Support Award
    The recognition for the work I did as a CS Peer Support Coordinator in the academic year 2018/2019.
  • Golden Anniversary Prize
    The Golden Anniversary Prize for excellence in first year studies. Top 5 out of 220 students.