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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="">
<meta name="author" content="Giacomo Castilioni">
<title>Dr G - Personal websyte</title>
<!-- Bootstrap core CSS -->
<link href="vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet">
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<link rel="stylesheet" href="vendor/academicons-1.8.2/css/academicons.min.css"/>
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</head>
<body id="page-top">
<nav class="navbar navbar-expand-lg navbar-dark bg-primary fixed-top" id="sideNav">
<a class="navbar-brand js-scroll-trigger" href="#page-top">
<span class="d-block d-lg-none">Giacomo Castiglioni</span>
<span class="d-none d-lg-block">
<img class="img-fluid img-profile rounded-diag mx-auto mb-2" src="img/GC.jpg" alt="">
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<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="#about">About</a>
</li>
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="#experience">Experience</a>
</li>
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="#education">Education</a>
</li>
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<a class="nav-link js-scroll-trigger" href="#skills">Skills</a>
</li>
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="#patents">Patents</a>
</li>
<!-- <li class="nav-item">
<a class="nav-link js-scroll-trigger" href="#interests">Interests</a>
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<div class="container-fluid p-0">
<section class="resume-section p-3 p-lg-5 d-flex d-column" id="about">
<div class="my-auto">
<h1 class="mb-0">Giacomo Castiglioni
</h1>
<div class="subheading mb-5">
<a href="mailto:giacastiglioni@gmail.com">giacastiglioni[at]gmail[dot]com</a>
</div>
<h3 class="mb-1">Who am I</h3>
<p class="mb-1">
My background is in computational fluid dynamics and, during my career, I transitioned from being a domain scientist to my current role as an HPC software engineer at ETHZ and as a freelancer. <br>
I enjoy understanding the interaction among different layers of the software stack and the hardware and how it affects performance. <br>
Lately I started to get interested in code generation and domain specific languages in the context of optimizing kernels programmatically for different hardware.
</p>
<h3 class="mb-1">Bio</h3>
<p class="mb-5">
I obtained my M.Sc. and PhD degrees in aerospace engineering from the University of Southern California, USA, in 2011 and 2015 respectively, while my B.Sc. in mechanical engineering was obtained at the Polytechnic University of Milan, Italy, in 2009.
My PhD <a href="https://search.proquest.com/docview/1728323911" target="_blank" rel="noopener noreferrer">thesis</a> was related to high-fidelity turbulence modeling for separated and transitional flows, and the quantification of numerical errors. <br>
After my doctoral appointment, I worked at Tesla Motors as a computational fluid dynamics analyst in both the thermal and external aerodynamics groups.
While at Tesla I submitted a <a href="https://patentimages.storage.googleapis.com/05/e9/47/626b98fa35252b/US10464397.pdf" target="_blank" rel="noopener noreferrer">patent</a> for a novel vent design. <br>
In 2016, I was a postdoctoral scholar at the California Institute of Technology (USA) working on high-fidelity simulations of multi-species supercritical flows.
When I moved to Imperial College (UK) in 2018, I worked on high-order unstructured methods for shock-wave boundary layer interactions.
Here I started my transition from domain scientist to software developer working on the open-source spectral finite element solver <a href="https://www.nektar.info/community/development-team" target="_blank" rel="noopener noreferrer">Nektar++</a>.
Among other topics, I ported a few kernels that utilize the single instruction multiple data (SIMD) paradigm for which I wrote a simple,
header-only SIMD library.
</p>
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<a href="http://www.linkedin.com/in/giacomo-castiglioni-50885725" target="_blank" rel="noopener noreferrer">
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</div>
</section>
<section class="resume-section p-3 p-lg-5 d-flex flex-column" id="experience">
<div class="my-auto">
<h2 class="mb-5">Experience</h2>
<div class="resume-item d-flex flex-column flex-md-row mb-5">
<div class="resume-content mr-auto">
<h3 class="mb-0">HPC Software Engineer</h3>
<div class="subheading mb-3">Eidgenössische Technische Hochschule Zürich, Zurich, Switzerland</div>
<p>HPC Software Engineer for QuICC, a software for dynamo (magnetohydrodynamics) simulations. <br>
Refactoring for hybrid parallelization (mpi+GPU/threads). <br>
Refactored building (CMake) and testing infrastructure (CI/CD).</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">October 2021 - Present</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row mb-5">
<div class="resume-content mr-auto">
<h3 class="mb-0">Freelance Software Engineer</h3>
<div class="subheading mb-3">Zurich, Switzerland</div>
<p>Freelance Software Engineer working on the C++ based, open-source, spectral finite element framework <a href="https://www.nektar.info/community/development-team" target="_blank" rel="noopener noreferrer">Nektar++</a>. <br>
Implementing a DSL using MLIR framework for generating performance critical kernels for different back-ends. <br>
Implemented Arm SVE back-end for in-house SIMD library.</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">October 2021 - Present</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row mb-5">
<div class="resume-content mr-auto">
<h3 class="mb-0">HPC Software Performance Engineer</h3>
<div class="subheading mb-3">École Polytechnique Fédérale de Lausanne, Geneva, Switzerland</div>
<p>HPC Software Performance Engineer in the HPC team at the Blue Brain Project. <br>
Developer for HBP (Human Brain Project) STEPS (STochastic Engine for Pathway Simulation). <br>
Investigated explicit SIMD libraries as a possible alternative to auto-vectorization in <a href="https://github.com/BlueBrain/CoreNeuron" target="_blank" rel="noopener noreferrer">CoreNEURON</a>.
</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">September 2020 - September 2021</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row mb-5">
<div class="resume-content mr-auto">
<h3 class="mb-0">Research Associate</h3>
<div class="subheading mb-3">Imperial College, London, UK</div>
<p>Senior developer of the C++ based, open-source, spectral finite elementframework <a href="https://www.nektar.info/community/development-team" target="_blank" rel="noopener noreferrer">Nektar++</a>. <br>
High fidelity simulations (LES/DNS) to predict shock wave unsteadiness in turbofan intake cowls at off-design conditions. <br>
Implementation and validation of shock capturing schemes in an open-source high-order finite element CFD software.</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">July 2018 - August 2020</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row mb-5">
<div class="resume-content mr-auto">
<h3 class="mb-0">Postdoctoral Fellow</h3>
<div class="subheading mb-3">California Institute of Technology / Jet Propulsion Laboratory, Pasadena, USA</div>
<p>
DNS simulations of multi-species, high-pressure flows relevant to fuel injection. <br>
Implemented a thermodynamic model to predict phases of fuel-air mixtures.
</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">November 2016 - June 2018</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row mb-5">
<div class="resume-content mr-auto">
<h3 class="mb-0">Senior Engineer external aerodynamics</h3>
<div class="subheading mb-3">Tesla Motors, Hawthorne, USA</div>
<p>Responsible for researching alternative CFD methodologies.</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">July 2016 - October 2016</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row mb-5">
<div class="resume-content mr-auto">
<h3 class="mb-0">Senior Engineer thermal/aero systems</h3>
<div class="subheading mb-3">Tesla Motors, Palo Alto, USA</div>
<p>Responsible for HVAC aerodynamics of Model 3. <br>
US patent for novel air vent design (<a href="https://patentimages.storage.googleapis.com/05/e9/47/626b98fa35252b/US10464397.pdf" target="_blank" rel="noopener noreferrer">US010464397B2</a>)
.</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">July 2015 - July 2016</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row">
<div class="resume-content mr-auto">
<h3 class="mb-0">Research Assistant</h3>
<div class="subheading mb-3">University of Southern California, Los Angeles, USA</div>
<p>
Prediction of laminar separation bubbles over wing/blade geometries. <br>
Large Eddy Simulations. <br>
Quantification of numerical dissipation. <br>
Immersed Boundary, Finite Volume code. <br>
Parallel computing.
</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">Fall 2010 - Spring 2015</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row">
<div class="resume-content mr-auto">
<h3 class="mb-0">Computational Fluid Dynamics Analyst</h3>
<div class="subheading mb-3">Tesla Motors, Fremont, USA</div>
<p>
Summer internship, simulations run on a cluster with STAR-CCM+ software.
</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">May 2012 - August 2012</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row">
<div class="resume-content mr-auto">
<h3 class="mb-0">Teaching Assistant</h3>
<div class="subheading mb-3">University of Southern California, Los Angeles, USA</div>
<p> AME 499 Turbine Design and Analysis. <br>
AME 408 Computer-Aided Design of Mechanical Systems (SolidWorks/CosmosWorks).<br>
AME 301 Dynamics.<br>
AME 150 Introduction to Computational Methods (MATLAB).<br>
</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">2010 - 2013</span>
</div>
</div>
</div>
</section>
<section class="resume-section p-3 p-lg-5 d-flex flex-column" id="education">
<div class="my-auto">
<h2 class="mb-5">Education</h2>
<div class="resume-item d-flex flex-column flex-md-row mb-5">
<div class="resume-content mr-auto">
<h3 class="mb-0">PhD in Aerospace Engineering</h3>
<div class="subheading mb-3">University of Southern California, Los Angeles, USA</div>
<div><a href="https://search.proquest.com/docview/1728323911" target="_blank" rel="noopener noreferrer">Thesis</a> title: "Numerical modeling of separated flows at moderate Reynolds numbers appropriate for turbine blades and unmanned aero vehicles".</div>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">May 2015</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row">
<div class="resume-content mr-auto">
<h3 class="mb-0">MS in Aerospace and Mechanical Engineering</h3>
<div class="subheading mb-3">University of Southern California, Los Angeles, USA</div>
<p>Computational Fluid and Solid Mechanics track.</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">December 2011</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row">
<div class="resume-content mr-auto">
<h3 class="mb-0">MS coursework in Mechanical Engineering</h3>
<div class="subheading mb-3">Technische Universiteit Delft, Delft, The Netherlands</div>
<p>Exchange student, Erasmus program.</p>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">August 2008 - August 2009</span>
</div>
</div>
<div class="resume-item d-flex flex-column flex-md-row">
<div class="resume-content mr-auto">
<h3 class="mb-0">BS in Mechanical Engineering</h3>
<div class="subheading mb-3">Politecnico di Milano, Milan, Italy</div>
</div>
<div class="resume-date text-md-right">
<span class="text-primary">February 2009</span>
</div>
</div>
</div>
</section>
<section class="resume-section p-3 p-lg-5 d-flex flex-column" id="skills">
<div class="my-auto">
<h2 class="mb-5">Skills</h2>
<div class="subheading mb-3">Programming Languages </div>
<ul class="list-inline list-icons">
<li class="list-inline-item">
<a href="https://en.wikipedia.org/wiki/C%2B%2B" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/icons8-c++.svg" alt="c++" class="dev-logo" width="60px"/></a>
</li>
<li class="list-inline-item">
<a href="https://en.wikipedia.org/wiki/C_(programming_language)" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/c.svg" alt="c++" class="dev-logo" width="60px"/></a>
</li>
<li class="list-inline-item">
<a href="https://en.wikipedia.org/wiki/Fortran" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/fortran.svg" alt="fortran" class="dev-logo" width="50px" /></a>
</li>
<li class="list-inline-item">
<a title="Waldir, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons" href="https://www.python.org/" target="_blank" rel="noopener noreferrer">
<img src="https://upload.wikimedia.org/wikipedia/commons/d/d3/Python_icon_%28black_and_white%29.svg" alt="python" class="dev-logo" width="50px" /></a>
</li>
<li class="list-inline-item">
<a href="https://en.wikipedia.org/wiki/Bash_(Unix_shell)" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/monochrome_dark.svg" alt="bash" class="dev-logo" width="70px"/></a>
</li>
<li class="list-inline-item">
<a title="mlir logo https://github.com/llvm/mlir-www/tree/main/website/static/LogoAssets" href="https://mlir.llvm.org/" target="_blank" rel="noopener noreferrer">
<img src="https://raw.githubusercontent.com/llvm/mlir-www/main/website/static/LogoAssets/logo/svg/black/mlir-identity-05.svg" alt="mlir" class="dev-logo" width="60px" /></a>
</li>
<li class="list-inline-item">
<a href="https://en.wikibooks.org/wiki/X86_Assembly/GNU_assembly_syntax" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/x86-64.svg" alt="x86asm" class="dev-logo" width="48px" /></a>
</li>
<li class="list-inline-item">
<a href="https://en.wikipedia.org/wiki/ARM_architecture_family" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/arm-v8.svg" alt="Armv8asm" class="dev-logo" width="48px" /></a>
</li>
</ul>
<div class="subheading mb-3">Tools</div>
<ul class="list-inline list-social-icons mb-0">
<li class="list-inline-item">
<a href="https://git-scm.com/" target="_blank" rel="noopener noreferrer">
<span class="fa-stack fa-lg">
<i class="fa-brands fa-git-square fa-2x"></i>
</span>
</a>
</li>
<li class="list-inline-item">
<a href="https://github.com" target="_blank" rel="noopener noreferrer">
<span class="fa-stack fa-lg">
<i class="fa-brands fa-github-square fa-2x"></i>
</span>
</a>
</li>
<li class="list-inline-item">
<a href="https://gitlab.com" target="_blank" rel="noopener noreferrer">
<span class="fa-stack fa-lg">
<i class="fa-brands fa-square-gitlab fa-2x"></i>
</span>
</a>
</li>
<li class="list-inline-item">
<a href="https://cmake.org/" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/cmake-icon.svg" alt="cmake" class="dev-logo" width="50px" /></a>
</li>
<li class="list-inline-item">
<a href="https://en.wikipedia.org/wiki/GNU_Debugger" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/archer.svg" alt="gdb" class="dev-logo" height="50px" /></a>
</li>
<li class="list-inline-item">
<a href="https://hpc.fau.de/research/tools/likwid/" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/likwid-logo.svg" alt="likwid" class="dev-logo" height="54px" /></a>
</li>
<li class="list-inline-item">
<a href="http://hpctoolkit.org/" target="_blank" rel="noopener noreferrer">
<img src="dev-icons/hpctoolkit.svg" alt="likwid" class="dev-logo" height="50px" /></a>
</li>
</ul>
<br>
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US patent for novel air vent design (<a href="https://patentimages.storage.googleapis.com/05/e9/47/626b98fa35252b/US10464397.pdf" target="_blank" rel="noopener noreferrer">US010464397B2</a>)</li>
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