Episodes

  • DistributedWorkflows.jl with Firoozeh Dastur
    Sep 4 2025

    In this episode, Chris Rackauckas and Michael Tiemann welcome back Firoozeh Dastur, a theoretical mathematician and PhD candidate from Germany working on tropical geometry. This marks the first time someone has returned to the Julia Dispatch podcast! Firoozeh shares her journey from Pakistan to Germany, her pivot from K3 surfaces to tropical geometry, and how she discovered Julia during the pandemic. She explains what tropical geometry is, her early struggles with Julia, and how the Julia Slack community became crucial to her learning process. The conversation then shifts to her work on computational algebra and HPC workflows, where she discusses the frustrations with existing HPC tools that led her to develop DistributedWorkflows.jl. She introduces us to Petri nets as an alternative to DAGs for managing cyclic workflows and explains how her package aims to make HPC accessible to everyone. Firoozeh also shares insights about overcoming perfectionism in open source development, the importance of releasing early (inspired by Airbnb's launch story), and her thoughts on differential equations as Turing complete systems.


    Firoozeh Dastur is a theoretical mathematician specializing in algebraic and tropical geometry with a strong focus on leveraging computer algebra systems for advanced mathematical research. Her other interests include high-performance computing (HPC) tools, with a particular goal of making distributed computing accessible to all domain scientists. As a passionate educator, Firoozeh is committed to fostering an inclusive learning environment that empowers the next generation of researchers and innovators. In her spare time, she develops Julia libraries that reflect her interests in distributed computing and computer algebra systems.


    DistributedWorkflows.jl: https://github.com/JuliaServices/DistributedWorkflows.jl

    Julia Slack community: https://julialang.org/slack/

    NEMO.jl: https://github.com/Nemocas/Nemo.jl

    Oscar.jl: https://github.com/oscar-system/Oscar.jl

    SPACK: https://spack.io/


    Recorded on: 2025/05/20

    Hosts: Chris Rackauckas, Michael Tiemann

    Editor: Stazi


    Find us everywhere:

    https://juliadispatch.fm

    https://github.com/JuliaDispatch/

    https://www.youtube.com/@JuliaDispatch

    https://anchor.fm/s/fc63539c/podcast/rss

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    1 hr and 12 mins
  • This month in Julia world 2025-04 with Chris & Guillaume
    Aug 12 2025

    Chris and Guillaume discuss the contents of the "This month in Julia world - 2025-08". We cover the upcoming JuliaCon Local Paris event, Julia 1.12 beta release updates, major compiler improvements with JuliaLowering.jl, performance optimization discoveries, and ecosystem growth with new packages like TestPicker.jl, BorrowChecker.jl, and AI integration tools. We also dive deep into technical discussions about optional modules, static arrays, and the ongoing focus on reducing latency across the Julia ecosystem.


    This month in Julia world - 2025-08: https://discourse.julialang.org/t/this-month-in-julia-world-2025-04/128859


    Recorded on: 2025/05/13

    Hosts: Chris Rackauckas, Guillaume Dalle

    Editor: Stazi


    Find us everywhere:

    https://juliadispatch.fm

    https://github.com/JuliaDispatch/

    https://www.youtube.com/@JuliaDispatch

    https://anchor.fm/s/fc63539c/podcast/rss

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    1 hr and 4 mins
  • Julia Health with Jacob Zelko
    Aug 5 2025

    Good morning, good evening, good night, wherever you are in the world! Today we welcome Jacob Zelko, who takes us on a fascinating journey from his early days as a biomedical engineering student through his work at the CDC during the COVID-19 pandemic, and into his current exploration of applied category theory. Jacob shares how his pandemic response work led him to seek more fundamental approaches to public health problems, ultimately discovering category theory as a potential framework for composing different models and analyses. We also dive into his role as leader of the Julia Health Organization, his experience as a Twitch streamer known as "The Cedar Prince," and his vision for using Julia to bridge the gap between high-performance computing and accessible health research tools.


    Jacob Scott Zelko is a MS student in Applied Mathematics at Northeastern University (NEU) and a trainee of NEU's Roux Institute. Prior to this, he has worked for Georgia Tech Research Institute as a Health Data Analytics and Informatics Researcher and as a Research Engineer for the Centers for Disease Control Office of Science. In the Julia community, he is the leader of the JuliaHealth organization, a community of Julia developers who use the Julia programming language to improve medicine, health care, public health, and biomedical research. Additionally, he is the co-admin for the Julia Language's GSoC program and is the Community Manager for the AlgebraicJulia ecosystem.


    Julia Health Organization: https://juliahealth.org/

    Jacob's personal website: https://jacobzelko.com/

    Jacob's GitHub: https://github.com/TheCedarPrince


    Recorded on: 2025/05/07

    Hosts: Chris Rackauckas, Michael Tiemann

    Editor: Stazi


    Find us everywhere:

    https://juliadispatch.fm

    https://github.com/JuliaDispatch/

    https://www.youtube.com/@JuliaDispatch

    https://anchor.fm/s/fc63539c/podcast/rss

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    1 hr and 39 mins
  • Julia Dispatch Podcast: March 2025 Newsletter Deep Dive with Chris Rackauckas & Stefan Krastanov
    Jun 28 2025

    Join Chris Rackauckas and Stefan Krastanov as they explore the latest developments in the Julia programming language ecosystem from the March 2025 "This Month in Julia World" newsletter.Link to the newsletter: https://discourse.julialang.org/t/this-month-in-julia-world-2025-03/127821🔥 Key Topics Covered:Julia 1.12 Beta 1: Major features including experimental --trim for smaller binaries, stackless compiler improvements, and new threading defaultsBLAS Lazy Loading: Groundbreaking changes to reduce startup time and memory consumption by loading linear algebra libraries on-demandREPL Improvements: Complete overhaul of auto-completion using the new Julia syntax parser, fixing numerous long-standing bugsPerformance Enhancements: Invalidation reduction efforts, faster code coverage, and compiler optimizationsEcosystem Updates: Julia on Google Colab with TPU support, Documenter.jl public keyword filtering, AlgebraOfGraphics.jl v0.10🚀 Highlights:How the new --trim flag enables dramatically smaller Julia binariesWhy BLAS lazy loading is a game-changer for startup performanceThe transition from Lisp-based to pure Julia parsing infrastructureReal-world impact of compiler improvements on large symbolic expressionsJulia running natively on TPUs through Reactant.jl📅 Upcoming Events:JuliaCon Local Paris (October 2025)Quantum Information Science Summer School in Amherst (June 2025)RUST Julia Meetup in EindhovenPerfect for Julia developers, data scientists, and anyone interested in high-performance computing and the latest language developments. Whether you're a beginner or advanced user, you'll find valuable insights into Julia's evolving ecosystem.#Julia #Programming #HighPerformanceComputing #OpenSource #datascience Recorded on: 2025/04/24Hosts: Chris Rackauckas, Stefan KrastanovEditor: StaziFind us everywhere:https://juliadispatch.fmhttps://github.com/JuliaDispatch/https://www.youtube.com/@JuliaDispatchhttps://anchor.fm/s/fc63539c/podcast/rss

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    44 mins
  • This month in Julia world newsletter with Stefan Krastanov
    May 14 2025

    Today, we're joined by Stefan Krastanov who is not only the main developer of QuantumClifford.jl, but also the author of the "This month in Julia world" newsletter. Stefan shares with us what passions him about physics, the combination of mathematical concepts and hands-on signal processing and what attracted him to Julia. And he confides in us how the Julia newsletter is a productive form of procrastination, how his own appreciation and understanding grew from being the newsletter editor, and how important it is to improve the communication and documentation to make a technology appealing, in particular to new comers.


    Stefan Krastanov is an assistant professor of at the University of Massachusetts Amherst. Before that, he was a postdoc at MIT/Harvard and obtained his PhD in physics at the Yale Quantum Institute. Stefan works on the design, control, and optimization of quantum hardware for computation and networking, from its analog physical description up to the compilation of error-corrected logical circuitry running on it. His research centers around leaky abstraction boundaries between the many layers of technologies making up the field of quantum computing and quantum information science. To this end, he has authored multiple related Julia packages. And Stefan is the author of the "This month in Julia world" newsletter.


    Recorded on 2025/04/09

    Hosts: Chris Rackauckas, Michael Tiemann

    Editor: Stazi


    Find us everywhere:

    https://juliadispatch.fm

    https://github.com/JuliaDispatch/

    https://www.youtube.com/@JuliaDispatch

    https://anchor.fm/s/fc63539c/podcast/rss

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    1 hr and 2 mins
  • Julia Gender Inclusive and DEI with Firoozeh Dastur, Leticia Madureira, and Skylar Gering
    May 7 2025

    We're back from our surprising hiatus with a very exciting round: Firoozeh, Leticia and Skylar. Their Julia journeys crossed in their engagement with the Julia Gender Inclusive and DEI (diversity, equity, and inclusion) initiatives. We briefly talk about their personal stories before delving into the inclusiveness topic. We discuss the impression and perspective of female participants at a so far male-dominated JuliaCon. The ladies share with us all the activities they have been involved in. And we dive into what problem's they perceive and how everybody in the community can help make Julia a more inclusive community.


    Firoozeh Dastur is a theoretical mathematician specializing in algebraic and tropical geometry with a strong focus on leveraging computer algebra systems for advanced mathematical research. Her other interests include high-performance computing (HPC) tools, with a particular goal of making distributed computing accessible to all domain scientists. As a passionate educator, Firoozeh is committed to fostering an inclusive learning environment that empowers the next generation of researchers and innovators. In her spare time, she develops Julia libraries that reflect her interests in distributed computing and computer algebra systems.


    Leticia Madureira is a PhD candidate in Chemistry at Carnegie Mellon University. Her research lies in the computational quantum chemistry field, applying electronic structure methods to elucidate interactions in chemical processes, such as polymerization reactions, photodegradation, etc. She currently collaborates with the Julia Lab in developing fast, free, open-source and efficient computer programs for electronic structure calculations, and expanding the scope of current methods available in the programming language. Some of the packages under development are: BasisSets.jl, OohataHuzinaga.jl, under the HartreeFoca GitHub organization. She aims to leverage computational studies to investigate theoretical paradigms in Chemistry by developing quantum chemical DFT-based algorithms capable of accurately computing electron-electron correlation in molecules through stability analysis of SCF, enabling broader exploration of transition-state theory, excited state dynamics, ground state geometry predictions and bond dissociation calculations. One of her main philosophies is to make theory and computation as accessible as possible, and to promote computational thinking in Chemistry through teaching, as she thinks quality education is an empowerment tool to the current and next generations of scientists, and teaching is the most noble academic activity!


    Skylar Gering is a PhD student through the Massachusetts Institute of Technology and Woods Hole Oceanographic Institute Joint Program. Her research is focused on environmental fluid mechanics, specifically the performance and control of floating offshore wind turbines. She previously worked on climate and sea ice modeling, which led her to start using Julia. She is also a contributor to the computational geometry library GeometryOps.jl. Beyond her research, she is passionate about climate change solutions and promoting equality in scientific/software communities.


    Julia Gender Inclusive website: https://juliagenderinclusive.github.io/

    Leticia's YouTube channel: https://www.youtube.com/@leticiamadureira4023


    We're still in the process of ironing out our technical gear and setup as you might have noticed. Bear with us. Eventually, we'll have figured it out.


    Recorded on: 2025/01/04

    Hosts: Chris Rackauckas, Michael Tiemann

    Editor: Stazi


    Find us everywhere:

    https://juliadispatch.fm

    https://github.com/JuliaDispatch/

    https://www.youtube.com/@JuliaDispatch

    https://anchor.fm/s/fc63539c/podcast/rss

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    1 hr and 13 mins
  • This month in Julia world 2025-02 with the Julia Dispatch hosts
    Apr 22 2025

    Today, we start a new series. Chris and Michael discuss the contents of the "This month in Julia world - 2025-02". We cover enhancements to Revise.jl, the introduction of JET.jl as a new language server, advancements in compiling Julia for embedded systems, challenges with multi-threading, improvements in the package manager, and the refactoring of the Julia compiler.


    We plan to make this a regular feature. Please let us know what you think about the format.


    This month in Julia world - 2025-02: https://discourse.julialang.org/t/this-month-in-julia-world-2025-02/126783


    Recorded on: 2025/03/21

    Hosts: Chris Rackauckas, Michael Tiemann

    Editor: Stazi


    Find us everywhere:

    https://juliadispatch.fm

    https://github.com/JuliaDispatch/

    https://www.youtube.com/@JuliaDispatch

    https://anchor.fm/s/fc63539c/podcast/rss

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    1 hr
  • Plots.jl with Simon Christ
    Apr 8 2025

    Today we're joined by Simon Christ who is "the computer guy in a biological department". Moving from rock solid C, advancing to C++, he discovered Julia when he had been frustrated enough by his prior programming experiences. Simon has fixed the PGF backend for Plots.jl and as time goes by found himself among the current project leads. Simon shares with us his experience about maturing and maintaining a foundational package in the ecosystem and why now it's the right time to work on a major version update. We also talk about the Plots.jl publication, the importance of reproducible science and package maintenance, and which colors should not be on plots.


    Simon Christ is a research software engineer at the Computational Biology department of the Institute of Cell Biology and Biophysics at the Leibniz University of Hannover. He has obtained a PhD in theoretical biological physics in 2020. Simon is one of the maintainers of Plots.jl, one of the most well-known plotting libraries in Julia. He has also published a paper about Plots.jl in the Journal of Open Research Software.


    Plots.jl: https://github.com/JuliaPlots/Plots.jl

    Plots.jl paper: https://doi.org/10.5334/jors.431

    Plots.jl Zulip channel: https://julialang.zulipchat.com/#narrow/channel/236493-plots.2Ejl

    Simon's Github account: https://github.com/BeastyBlacksmith


    Huge thanks to Jürgen Fuhrmann and the Weierstrass Institute Berlin for hosting Simon and Chris during the recording.


    Jürgen's homepage: https://www.wias-berlin.de/people/fuhrmann/?lang=1

    Weierstrass Institute's homepage: https://www.wias-berlin.de


    Recorded on: 2025/01/14

    Hosts: Chris Rackauckas, Michael Tiemann

    Editor: Stazi


    Find us everywhere:

    https://juliadispatch.fm

    https://github.com/JuliaDispatch/

    https://www.youtube.com/@JuliaDispatch

    https://anchor.fm/s/fc63539c/podcast/rss

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    1 hr and 2 mins