blog – Google Summer of Code 2026 | QuTiP | NumFOCUS

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Week 12: Documentation and Wrapping Up

GSoC 2026

Week 12

QuTiP

HEOM

PETSc

Documentation

This week was dedicated to writing documentation. Now that the code is refactored and the implementation is stable, it was time to make sure users actually know how to use…

Week 11: Backend Abstraction and PR Submission

GSoC 2026

Week 11

QuTiP

HEOM

PETSc

Refactoring

This week was all about refactoring. Based on continued feedback from my mentor, I reworked how the PETSc backend plugs into the HEOM solver — moving from ad-hoc if/else…

Week 10: Code Refactoring and Fermionic Baths Implementation

GSoC 2026

Week 10

QuTiP

HEOM

PETSc

Fermionic Baths

Refactoring

This week, the primary focus was on code refactoring based on feedback from my mentor on the draft Pull Request, and expanding the PETSc backend to support Fermionic baths.

Week 9: Steady State Implementation and Benchmarking

GSoC 2026

Week 9

QuTiP

HEOM

PETSc

Benchmarking

This week, we focused on implementing the steady state functionality for the PETSc backend and added tests to ensure its correctness, alongside benchmarking its performance…

Week 8: HPC Cluster Benchmarking on Fugaku & Final Testing

GSoC 2026

Week 8

QuTiP

HEOM

PETSc

Benchmarking

Fugaku

HPC

Following up on the local performance benchmarking from Week 7, our primary goal for Week 8 was to test the PETSc backend in a true High-Performance Computing (HPC)…

Week 7: Comprehensive Benchmarking of the Native PETSc HEOM Solver

GSoC 2026

Week 7

QuTiP

HEOM

PETSc

Benchmarking

Performance

Building on the successful integration of PETSc into QuTiP from Week 5 and initial tests in Week 6, this week was dedicated to extensive benchmarking. We rigorously tested…

Week 6: Benchmarking the Native PETSc HEOM Solver

GSoC 2026

Week 6

QuTiP

HEOM

PETSc

Benchmarking

Following last week’s successful integration of the PETSc backend directly into QuTiP’s HEOMSolver, this week was entirely focused on benchmarking. The goal was to compare…

Week 5: Natively Integrating PETSc into QuTiP’s HEOM Solver

GSoC 2026

Week 5

QuTiP

HEOM

PETSc

MPI

Steady State

Week 5 marked a major milestone: transitioning our successful standalone distributed assembly scripts into a native backend within the QuTiP codebase itself. Until now, we…

Week 4: Building the HEOM RHS from Scratch and Going Fully Distributed

GSoC 2026

Week 4

QuTiP

HEOM

PETSc

MPI

ODE

Week 4 was the most technically involved week so far. The goal shifted from using QuTiP’s HEOM solver to understanding it well enough to replace its internals — rebuilding…

Week 3: Extracting the RHS Matrix and Building the PETSc Bridge

GSoC 2026

Week 3

QuTiP

HEOM

PETSc

ODE

Week 3 was focused on understanding how the QuTiP HEOM solver actually integrates the equations of motion, and building a path to replace that integration with PETSc.

Week 2: Profiling the Existing HEOM Solver

GSoC 2026

Week 2

QuTiP

HEOM

Profiling

Performance

Coding phase Week 2 was focused on understanding the current HEOM implementation before making any modifications to it.

Week 1: Getting Hands-On with MPI and PETSc

GSoC 2026

Week 1

QuTiP

PETSc

MPI

Coding phase has started. Week 1 was less about writing solver code and more about actually getting comfortable with the tools I’ll be using — MPI and PETSc. Worked through…

Community Bonding Period: Setting the Foundation for Success

GSoC 2026

Community Bonding

QuTiP

The community bonding period (May 12 - May 24) is wrapped up. Honestly it went by faster than I expected.

Exciting News: I’m Joining Google Summer of Code 2026!

GSoC 2026

OpenSource

Python

HPC

quantum

A few months ago, I put together a GSoC proposal half-convinced it wouldn’t go anywhere. I’d been contributing to QuTiP for a while, understood the codebase well enough to…