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Amartya

@amartya@fosstodon.org

mastodon 4.6.6

HPC Software Engineer at Calligo Technologies.
Based in Bangalore.

M.Sc. in High Performance Computing from EPCC, University of Edinburgh.

I toot about computer science, social issues, and my general life updates.

@arvyagami@mastodon.social - for my non-tech toots about random stuff
 #hpc #softwaredev #edinburgh #india #api #epcc #uoe #universityofedinburgh #developer

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12 Posts

Joined April 14, 2024

Github:

https://github.com/amartyadav

Website:

https://amartyadav.com

Pixelfed:

@up@pixelfed.social

Linkedin:

https://linkedin.com/in/amartyadav

Posts

Amartya @amartya@fosstodon.org · Apr 23, 2026

Time to go back to my proper nerd-dev mode, like how I used to be in uni. I have been way too distracted lately.

Amartya @amartya@fosstodon.org · Apr 14, 2026

My implementation of the GaussSeidel smoother using a Diagnol direct access scheme in OpenFOAM as compared to the default GS smoother LDU gives almost ~50% improvements in cache misses and hits for a structured 3D cavity tutorial. Profiled using the amazing LIKWID profiler. Will share a deep technical report soon. Check it out and use - https://github.com/amartyadav/DIAGaussSeidel-Smoother-OpenFOAM
#hpc #scientificcomputing #computationalphysics #cfd #openfoam #likwid #softwaredevelopment #cpp

Amartya @amartya@fosstodon.org · Apr 13, 2026

Replying to @irenej@drg.nz

@irenej @hiway

Amartya @amartya@fosstodon.org · Apr 10, 2026

Released my DIA-format Gauss-Seidel smoother plugin for OpenFOAM v13. MIT licensed.

Replaces the default LDU smoother on structured hex meshes — DIA stores diagonal bands contiguously, reducing pointer indirection and DRAM pressure. Expecting 10–20% wall-clock gains and better cache utilisation based on standalone profiling. Full OpenFOAM benchmarks incoming.

https://github.com/amartyadav/DIAGaussSeidel-Smoother-OpenFOAM

#OpenFOAM #HPC #CFD #NumericalMethods #FOSS #computerscience #physics

Amartya @amartya@fosstodon.org · Apr 07, 2026

Been working on my Linux machine for 3 months now at work - comp. physics, hpc, etc.
Tried working on my MBP yesterday (after around 5 months of not using it for development) - while a superior machine h/w wise, I really couldn't stand macOS.
Linux just works - better even.

#linux #macos #development #hpc #scientificcomputing #computationalphysics #ux #ubuntu #SoftwareDevelopment

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Amartya @amartya@fosstodon.org · Apr 07, 2026

Replying to @dansup@mastodon.social

@dansup that’s brilliant! Any chance we could contribute in the actual development? Maybe work on a few git issues?

Amartya @amartya@fosstodon.org · Mar 24, 2026

My latest blog post explores a Multi-Material Thermal Analysis using HYPRE BoomerAMG with a custom POSIT accelerator called Uttunga, and compares it to the x86 IEEE 754 standard.

https://www.amartyadav.com/posts/post3.html

#computationalphysics #hpc #opensource #scientificcomputing #thermalphysics #Automotive #automotiveengineering #calligo #posit #ieee_754

Amartya @amartya@fosstodon.org · Mar 24, 2026

My work for the month is to optimise the matrix adressing scheme of OpenFOAM to reduce cache miss. Initial idea is to replace the LDU Matrix addressing scheme with Diagnol matrix addressing scheme using multiple arrays for structures meshes. Will check it out on a simple 2D Poisson equation using Gauss-Seidel solver to check performance benefits, and will eventually proceed to introduce a new solver as a plugin if benefits are noticeable.
Wish me luck.

#openfoam #scientificcomputing #hpc #cfd

Amartya @amartya@fosstodon.org · Mar 04, 2026

Replying to @greenpeace@mastodon.social

@greenpeace@mastodon.social @KingmaYpe@mastodon.green

Amartya @amartya@fosstodon.org · Mar 24, 2025

Replying to @ellnix@fosstodon.org

@ellnix@fosstodon.org Thank you so much for your suggestion! And I am glad you liked it. I am new to this, so your suggestions are extremely welcome. I just implemented the RSS feed and comment section there. Thank you again! :)

Amartya @amartya@fosstodon.org · Mar 24, 2025

Replying to @ellnix@fosstodon.org

@ellnix@fosstodon.org That is exactly the case. These things always seem like a distant fascist state of affairs that won't affect us. I will use this case as well now.

Amartya @amartya@fosstodon.org · Mar 23, 2025

My first blog about a little something that I care about.

https://amartyadav.com/posts/post1.html

Amartya

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