Matthew Feickert matthewfeickert

Research scientist in high energy physics and data science at University of Wisconsin-Madison working on LHC physics with the ATLAS experiment and IRIS-HEP.

411 followers · 414 following

University of Wisconsin-Madison
Lafayette, Colorado
23:38 (UTC -06:00)
http://www.matthewfeickert.com/
https://orcid.org/0000-0003-4124-7862
@HEPfeickert
@matthewfeickert@fosstodon.org

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matthewfeickert / .gitattributes

Last active October 5, 2026 05:32

Reproducer for conda-forge/herwig-feedstock issue 8: Herwig 7.3.0 segfaults for h0 -> g g with the dipole shower

	# SCM syntax highlighting & preventing 3-way merges
	pixi.lock merge=binary linguist-language=YAML linguist-generated=true -diff

matthewfeickert / README.md

Last active September 29, 2026 23:28

Survey of the version constraints that CRAN packages put on R itself (operators, repeated bounds, dash-separated versions), as a reproducible Pixi workspace. Supports prefix-dev/rattler-build PR 2759.

How to reproduce the CRAN numbers

With Pixi installed, save the two files below next to each other and run

$ pixi run snapshot 2026-09-29  # the CRAN index as archived by Posit Package Manager on that day
$ pixi run survey               # the CRAN index as it is right now

matthewfeickert / .gitattributes

Last active October 1, 2025 22:39

Example Pixi environment for CUDA accelerated GROMACS and PyTorch

	# SCM syntax highlighting & preventing 3-way merges
	pixi.lock merge=binary linguist-language=YAML linguist-generated=true

matthewfeickert / README.md

Last active September 19, 2025 19:10

OpenMC install recipe

Use Pixi to get OpenMC installed

Install Pixi
- Do NOT use Homebrew
Clone this repository
Navigate to the top level of the repository
Run

pixi run install-openmc

matthewfeickert / .gitattributes

Last active July 17, 2025 22:37 — forked from Moelf/gpu_hist.md

GPU Histogram for Python via `juliacall`

	# SCM syntax highlighting & preventing 3-way merges
	pixi.lock merge=binary linguist-language=YAML linguist-generated=true

matthewfeickert / pixi.lock

Created January 13, 2025 05:26

pixi environment manifest and lock file for https://github.com/geojupyter/jupytergis/issues/318

	version: 6
	environments:
	default:
	channels:
	- url: https://conda.anaconda.org/conda-forge/
	packages:
	linux-64:
	- conda: https://conda.anaconda.org/conda-forge/linux-64/_libgcc_mutex-0.1-conda_forge.tar.bz2
	- conda: https://conda.anaconda.org/conda-forge/linux-64/_openmp_mutex-4.5-2_gnu.tar.bz2
	- conda: https://conda.anaconda.org/conda-forge/noarch/annotated-types-0.7.0-pyhd8ed1ab_1.conda

matthewfeickert / .gitattributes

Last active November 21, 2024 23:59

Reproducer for Fortran compile failure related to string

	# SCM syntax highlighting
	pixi.lock linguist-language=YAML linguist-generated=true

matthewfeickert / .gitattributes

Last active November 17, 2024 09:12

'hello world' using ncurses from conda-forge

	# SCM syntax highlighting
	pixi.lock linguist-language=YAML linguist-generated=true

matthewfeickert / .gitattributes

Last active November 4, 2024 10:29

Local pixi build attempt of Shepa v2.2.16

	# GitHub syntax highlighting
	pixi.lock linguist-language=YAML linguist-generated=true

matthewfeickert / .gitattributes

Created October 21, 2024 23:08

Trivial example of using pixi to install ROOT and Python that isn't the latest Python

	# GitHub syntax highlighting
	pixi.lock linguist-language=YAML linguist-generated=true

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