Code

Most of what I write in the open lives on GitHub. A selection is annotated below; the full list is on the profile.

Modeling & Simulation

pyExaMINE Python ExaScale Minerals & Infrastructure Network Evaluation Agent-based model of worldwide critical-mineral supply chains at facility resolution — individual mines, processors and recyclers for lithium, nickel, cobalt, manganese and platinum. Shipments route through the real maritime chokepoints (Hormuz, Suez, Malacca, Panama, the Cape) with mode-specific lead times, and prices respond to geopolitical disruption, embargoes and material substitution. Facility data is curated from USGS Mineral Commodity Summaries, the IEA Critical Minerals Outlook, S&P/BMI and company filings.
ExaEpi Agent-based epidemiological simulation on AMReX · my fork GPU-accelerated agent-based epidemiology built on the AMReX framework, running on Aurora, Frontier and Perlmutter. The simulation engine behind the DOE/ASCR EMERGE project.
py-nbody A simple demo of a Python-based N-body code
pic-mini A mini-app for a particle-in-cell code

SeeChange Time-domain data reduction pipeline Images to lightcurves for surveys like DECam and LS4.
ls4 & ls4-point La Silla Schmidt Southern Survey tooling, including the pointing solution
frankenblast-host Rapid transient host association, photometry and stellar population modeling
WiseSN Subtraction photometry for WISE transients

SNKappa Weak-lensing convergence at supernova positions from DESI and DECaLS data
SNhost Surface brightness of the host galaxy under a supernova
kastmlens Kast microlensing studies
declens Lensing analysis
scenic Scene modeling for multi-epoch photometry
binary Hanbury Brown–Twiss intensity interferometry and binary stars

astro250 Codes for the Astronomy 250 HPC class at UC Berkeley · lecture material

Beyond GitHub, this site hosts the supernova spectral templates and the data files accompanying several older papers.