Andrea Zonca

High Performance Computing, Kubernetes, Python, Cosmology @Planck, now data pipelines for @simonsobs, Cloud @jetstream_cloud. Staff @SDSC_UCSD & consultant.

[Andrea Zonca @andreazonca]

New guide: SDSC's cyberinfrastructure for AI research — Expanse, Voyager, Cosmos, NRP, and NDP. Step-by-step access for each platform. `https://t.co/7E8tgiqffo` #hpc #ai #sdsc #cyberinfrastructure

[Andrea Zonca @andreazonca]

healpy 1.20.0b1 beta: harmonic_ud_grade for artifact-safe map downgrading via spherical harmonics
https://t.co/MntexSsImN
#healpy #HEALPix #CMB

[Andrea Zonca @andreazonca]

PySM 3.4.5: new HalfDome TSZ model (tsz4), scipy < 1.15 pin removed, Python 3.9 dropped. Upgrade: pip install --upgrade pysm3
https://t.co/oyb6Jp5RMU
https://t.co/6vbw1Sg0I4
#PySM #CMB

[Andrea Zonca @andreazonca]

@_mohansolo Quickly?? That is an understatement. 20 minutes without even coding and flash was gone

[Andrea Zonca @andreazonca]

Running a Python workshop? You might not need JupyterHub 🐍

JupyterLite runs Python in the browser — no server, no setup. NumPy, SciPy, Pandas, scikit-learn all work via WebAssembly 🧪

https://t.co/rre8USN8ZV
https://t.co/j8WGaZFiRd #Python #Jupyter

[Andrea Zonca @andreazonca]

@CapitalOne credit wise notifications are too dumb, and the only way to disabling them is to cancelling the account...so bye.

[Andrea Zonca @andreazonca]

New tutorial: Deploy JupyterHub on OpenStack Magnum with OpenTofu.

Kubernetes + HTTPS + custom subdomain — fully automated.

https://t.co/3Sy1SvrZs3

#Kubernetes #OpenStack #JupyterHub

[Andrea Zonca @andreazonca]

Applications close TOMORROW for SDSC HPC and Data Science Summer Institute! 5 days hands-on: Deep Learning, GPU, MPI/OpenMP. Aug 3-7 San Diego. Limited to 45. Full agenda: https://t.co/ehwVfJithL Register: https://t.co/2VExqULjg5 #HPC #DataScience #AI

[Andrea Zonca @andreazonca]

Just published: a notebook comparing SPT-3G D1 CMB power spectra with Planck 2018. Shows where primary acoustic peaks give way to secondary anisotropies at high multipoles. Created with a simple prompt to Sonnet 4.6.

[Columbia Physics Department @PhysicsColumbia]

2026 New Horizons in Physics Prize!
Congratulations Professor Colin Hill !
"For advances in cosmic microwave background and supernovae cosmology"
"...pushed analyses of CMB data beyond previous limits, producing the most precise tests to date..."
https://t.co/8nN3jZi0cp

[Andrea Zonca @andreazonca]

Pretty disappointed with Codex for CLI use lately. The 5-hour window now gets burned in about 1 hour of real work. A month or two ago, I almost never hit it.

I’ve been using Gemini CLI more, and Gemini 3 Flash has been impressively good with fairly complex problems.

[Andrea Zonca @andreazonca]

@SmitheryDotAI I am getting {"error":"auth_required","message":"OAuth discovery failed for this server"} for all my MCP servers

[Flatiron Institute @FlatironInst]

Applications are open for #FlatironCCA's 2026 CMB Summer School, where participants will learn core concepts and practical tools for CMB data analysis and simulations. Deadline is April 4: https://t.co/hjPZ7XOR5J #astrophysics #science

[Andrea Zonca @andreazonca]

I wrote a tutorial on running your own AI chat on Jetstream2.

Jetstream2 is a research cloud, and ACCESS is the program that helps U.S. researchers use it. I show how to start a GPU VM, run `llama.cpp`, and chat through a web UI.

https://t.co/xHa9JsrDPw

[Andrea Zonca @andreazonca]

Confluence is still a miserable place to keep useful content, so here’s a better escape route: export pages and attachments straight to Markdown with `confluence-cli` via the API.

https://t.co/Q9JnBeejo6

[Andrea Zonca @andreazonca]

I built sphinxnotebookgist, a Sphinx extension for keeping Jupyter notebooks clean in git while rendering executed outputs in docs. It verifies source cells before using a remote executed notebook. https://t.co/hTAcuXexwg

[Andrea Zonca @andreazonca]

Simplify the maintenance of a Docker Image for #Jupyterhub using repo2docker and #Github actions:

https://t.co/PWCYBpUczO

Notice that inside Github action I am using Kind to actually deploy Zero to JupyterHub in #Kubernetes and test the image inside it.

[Andrea Zonca @andreazonca]

As an alternative to deploy `nbgrader` on Zero-to-JupyterHub using `ngshare`, on Jetstream 2 we can also rely on the shared filesystem service provided by Openstack Manila:

https://t.co/zDVpuH8XYq

[Google Antigravity @antigravity]

Gemini 3.1 Pro is ramping up in Google Antigravity, starting with Google AI Ultra and Pro users! This model brings our most advanced reasoning and long horizon planning to your development workflow.

[Andrea Zonca @andreazonca]

New tutorial: deploy nbgrader on Jetstream with ngshare (#Kubernetes). Covers ngshare install, #JupyterHub integration, student workflow, and autograding with expected outputs.

https://t.co/E5SXlF5VA1