Home on Subhrajit Das

Distributing Matrix Multiplication over a Network of CPUs

Wed, 01 Oct 2025 00:00:00 +0000

Team Contributor, IIT Gandhinagar & University of Edinburgh, Oct 2025 – Present

This project investigates how a network of CPUs can efficiently perform matrix multiplication tasks often handled by specialized hardware like GPUs.

Developer Experience of Consent Management Platform Integration

Wed, 01 Oct 2025 00:00:00 +0000

Team Contributor at IIT Gandhinagar, Oct 2025 – Present

Investigating the usability challenges developers face when integrating Consent Management Platforms (CMPs) into web applications.

Accelerating Large Integer Arithmetic with Parallel Addition, Subtraction, and Vedic-Based Multiplication Using AVX512

Wed, 01 May 2024 00:00:00 +0000

M.Tech. Thesis Work, Thesis PDF

Studies on Various Maximal Covering Location Problems using Genetic and Artificial Bee Colony Algorithms

Sun, 01 May 2022 00:00:00 +0000

M.Sc. Thesis Work, Thesis PDF

Reversible Multiplier Accumulate Unit

Fri, 01 May 2020 00:00:00 +0000

B.Sc. Project Work, Project Report

Instant Payment Gateway (IPG)

Sun, 01 Oct 2023 00:00:00 +0000

Team Contributor, GitHub

TennisServe: A Parallel Game Matching Server with OpenMP & MPI

Wed, 01 Nov 2023 00:00:00 +0000

Individual Contributor, GitHub

Conferences

Sat, 06 Jun 2026 14:40:59 +0530

Below you may find some of the conferences I have attended over the years.

AsiaCCS'26 (01-05 June 2026, Bengaluru, India)
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I attended AsiaCCS'26, the 17th ACM Asia Conference on Computer and Communications Security, held on 01-05 June 2026 in Bengaluru, India, where I had been a volunteer. Few snaps added from our group dinner at Shiro, Bengaluru.

Attended AsiaCCS 2026 in Bengaluru, India

Sat, 06 Jun 2026 00:00:00 +0000

I attended the AsiaCCS 2026 in Bengaluru, India from 01-05 June 2026, where I had been a volunteer. It was a great experience to attend a flagship security conference in India and interact with the attendees.

Gallery

Misc

Thu, 12 Feb 2026 14:40:59 +0530

AI Day 2026 @ IITGn
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I attended the AI Day 2026 at IIT Gandhinagar on 12th February 2026, where I had presented a poster for our work “Davids vs. Goliath — Achieving GPU-like performance using Network of Stations”. It was a great experience to interact with the attendees and share our work on achieving GPU-like performance using a network of stations. Below are some photos from the event.

Presented poster @ AI Day 2026, IITGn

Thu, 12 Feb 2026 00:00:00 +0000

Gallery

How to Measure Performance of Your Code

Fri, 26 Dec 2025 11:30:00 +0530

Measuring code performance accurately is crucial, especially when optimizing the existing algorithms or designing new ones. In this post, I’ll share my learnings of measuring code performance using various tools and techniques.

For measuring execution time, we can use the following techniques:

Wall Clock Time (clock_gettime)
Linux resource usage metrics (getrusage)

To measure raw Time Stamp Counter (or, ticks), on x86 architectures we can use:

RDTSC (Read Time-Stamp Counter)

Finally, to pinpoint performance bottlenecks, we can use the Linux perf tool; However, there are two ways to use it:

Workshops

Tue, 04 Nov 2025 14:40:59 +0530

Computer Systems Workshop at IISc Bangalore (30-31 October 2025, Bangalore, India)
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We attended the invite-only Computer Systems Workshop held at IISc Bangalore on 30-31 October 2025. I presented a poster there. Below are few pictures from those two days.

Presented Poster at IISc Bangalore

Fri, 31 Oct 2025 00:00:00 +0000

Presented poster on our work on “Accelerating Large Integer Arithmetic with Parallel Addition, Subtraction, and Vedic-Based Multiplication Using AVX512” at the Computer Systems Workshop held at IISc Bangalore.

Gallery

Organized Cyber Security CTF at ICAN FDP, IIT Madras

Tue, 15 Jul 2025 00:00:00 +0000

Organized web security CTFs for ICAN Faculty Development Program on Cybersecurity at IIT Madras.

LinkedIn Post

Some memories during my M.Tech at IIT Gandhinagar

Mon, 30 Jun 2025 10:00:59 +0530

Here are some memories during my M.Tech at IIT Gandhinagar.

Convocation - Class of 2025
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Party thrown by our Advisor
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IIT Gandhinagar Campus

Mon, 03 Feb 2025 14:40:59 +0530

Let’s take a look at the beautiful IIT Gandhinagar campus through my lens.

IIT Gandhinagar Campus (2023-2025)
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These are taken during my stay at IIT Gandhinagar from 2023 to 2025 for my M.Tech degree.

Green Campus
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Teaching

Mon, 03 Feb 2025 14:40:59 +0530

Below you may find some of the teaching activities I have been involved in over the years (as of now, only one).

Code Profiling and Optimization (November 2024)
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This was a Student-Run Short Course on Code Profiling and Optimization conducted at IIT Gandhinagar during my final-year of M.Tech. I was principal instructor for the course along with my batchmate Pratyush Choudhary, who was the co-instructor.

University of Kalyani

Mon, 03 Feb 2025 14:40:59 +0530

Let’s take a look at a few shots of my alma mater, the University of Kalyani. These are taken at the university from 2021 to 2023 during my M.Sc degree.

Pictures with Faculty Members
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Dept. of CSE Building
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Director's PhD Fellowship

Wed, 15 Jan 2025 00:00:00 +0000

Selected for the Director’s PhD Fellowship at the IIT Gandhinagar.

Best Paper Award at BuildSEC'24

Fri, 20 Dec 2024 00:00:00 +0000

Attended BuildSEC'24 in New Delhi and presented our work on “Online Authentication Habits of Indian Users”. We also won the Best Paper Award there!

LinkedIn Post

Online Authentication Habits of Indian Users

Sun, 01 Dec 2024 00:00:00 +0000

Pratyush Choudhary, Subhrajit Das, Mukul Paras Potta, Prasuj Das, and Abhishek Bichhawat

1st International Conference on Building a Secure and Empowered Cyberspace (BuildSec) New Delhi, India, December 2024

IEEE Xplore

Home on Subhrajit Das

Distributing Matrix Multiplication over a Network of CPUs

Developer Experience of Consent Management Platform Integration

Accelerating Large Integer Arithmetic with Parallel Addition, Subtraction, and Vedic-Based Multiplication Using AVX512

Studies on Various Maximal Covering Location Problems using Genetic and Artificial Bee Colony Algorithms

Reversible Multiplier Accumulate Unit

Instant Payment Gateway (IPG)

TennisServe: A Parallel Game Matching Server with OpenMP & MPI

Conferences

AsiaCCS'26 (01-05 June 2026, Bengaluru, India) #

Attended AsiaCCS 2026 in Bengaluru, India

Misc

AI Day 2026 @ IITGn #

Presented poster @ AI Day 2026, IITGn

How to Measure Performance of Your Code

Workshops

Computer Systems Workshop at IISc Bangalore (30-31 October 2025, Bangalore, India) #

Presented Poster at IISc Bangalore

Organized Cyber Security CTF at ICAN FDP, IIT Madras

Some memories during my M.Tech at IIT Gandhinagar

Convocation - Class of 2025 #

Party thrown by our Advisor #

IIT Gandhinagar Campus

IIT Gandhinagar Campus (2023-2025) #

Green Campus #

Teaching

Code Profiling and Optimization (November 2024) #

University of Kalyani

Pictures with Faculty Members #

Dept. of CSE Building #

Director's PhD Fellowship

Best Paper Award at BuildSEC'24

Online Authentication Habits of Indian Users

AsiaCCS'26 (01-05 June 2026, Bengaluru, India)
#

AI Day 2026 @ IITGn
#

Computer Systems Workshop at IISc Bangalore (30-31 October 2025, Bangalore, India)
#

Convocation - Class of 2025
#

Party thrown by our Advisor
#

IIT Gandhinagar Campus (2023-2025)
#

Green Campus
#

Code Profiling and Optimization (November 2024)
#

Pictures with Faculty Members
#

Dept. of CSE Building
#