Storage@Homefarm 2022-06-01
For five years my day job was managing a production, public Ceph cluster. I’m very fond of it and know how good it is at not losing data. Now I want to start scanning my book collection. That will require a significant amount of durable onsite storage, so I’m turning to Ceph. This document details the efforts to fold setup and management of the Ceph distributed filesystem into Homefarm. 2022-06-01 First steps I always start a process with manual proving-out, then move to automation.

Grid Computing @ Firepear 2022-06-01
We believe in the power of science and a knowledge-based approach to life in general. So we’re proud to be a part of several community grid computing projects which work to solve open problems in medicine, environmental science, and mathematics. Our contributions We currently are, or previously have been, active in World Community Grid, Folding@Home, Rosetta@Home, Einstein@Home, GPUGrid, and Asteroids@Home. You can check out our detailed stats across all projects.

Updates 2022 2022-06-01
2022-06-01 Downtime We’ve shut down crunching for most of the past month, while WCG has been down. We’ll be back when they are. 2022-04-02 More power and less power Since the last update, all nodes have been upgraded to a 16-core configuration. The 3900Xs, after long and meritorious service, have all been retired. They are replaced with 5950Xs. Also, summer is now approaching, and the machines are in an un-air-conditioned garage.

Upgrade upcycling 2021-12-16
We want our hardware to keep doing good work after it’s cycled out of active use in our fleet. So we do rebuilds, turning extra hardware from upgrades into complete machines. These machines are then distributed to people who can give them a good home. CPU RAM GPU Storage New assignment Ryzen R5 1600 32G GTX 1650 S 500G M.2 Climatology; science communication Ryzen R3 2200G 16G — 500G M.

Updates 2021 2021-11-04
2021-11-04: More power With temps continuing to drop outside, I’ve bumped the PPT on the 3950Xs to 80W, so they’re now sitting right at 60C with average clocks around 2.7GHz. 2021-10-20: node01 GPU upgrade The GTX 1650 that I snagged arrived today and has been slotted into node01. That bumps its FAH EPPD from the range of 50-100k to 500k+. Also, while node05’s 750 Ti is soldiering on, it’s become apparent that it should be upgraded as well.

Copy 2021-03-08
This is the story of trying to fix one problem, in one headword entry in the thesaurus corpus. Having gotten my 1911 Roget’s out of storage, for use as a backstop in making determinations about errors reported by rlint, I decided it was time to start work. The first entry flagged was: Copy : tests ✘ : Invalid char '-' in sense 3 (N sense 3) term "transcript", attr "copy into a non-visual form" The message makes it clear what the technical issue here is: currently, attributes/notations on terms are not allowed to contain hyphens.

Reboot 2021-02-22
The Roget22 project is my second-oldest project, yet it hasn’t made it out into the world. Its goal is to produce a beautiful, maintained, electronic thesaurus which is as much a pleasure to peruse as the original. It got stuck several years ago as a result of me painting myself into a corner with my chosen data representation, and then getting frustrated with the amount of work I had created for myself as a result.

Updates 2020 2020-08-25
2020-12-18: Second Century Today marks 200 years of CPU time for World Community Grid, 340 calendar days after hitting the first century mark. Upgrades next year will let us do even more science in less time. 2020-08-25: Wrapping up Rosetta With WCG’s OPN project in full swing, we are finishing up our existing work for Rosetta@Home, and then detaching our nodes for now. Rosetta is very heavy, and it’s also extremely popular so it’ll be fine while we put those cycles toward WCG’s projects.

Greenhouse 2 2020-08-23
This is the development diary for Greenhouse 2, the second iteration of my homebrew micro-rack. 2020-05-01 – Introduction The original Greenhouse was a success, but several lessons were learned from it. Use of mITX boards minimized footprint, but drove up cost and reduced choice Over/under PSU design minimized horizontal footprint, but led to increased vertical spacing and more complex mounting Minimizing horizontal footprint wasn’t worth it Fully open design probably didn’t cool as effectively; pushing air where you want it isn’t as effective as forcing it to be pulled through where you need it Even moderately complex cutting and shaping of metal is a nightmare without proper tooling and space And so the next iteration will be changed in several fundamental ways.

Project Greenroom 2020-07-11
I’ve been working on adding support for the ARM architecture to Homefarm for a bit now. This week I decided to try to push through, and get that work done and tested. Obviously you can’t test software designed to manage a farm of computers with just one machine, so I had to build myself a tiny ARM farm. Building the cube Here’s most of the raw materials: Four Raspberry Pi 4 Model Bs (4GB version), 4 heatsink sets, and 3 16GB SD cards (I already had one spare).