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Chris Dagdigian @dagdigian.com · 14/03/2026

I get outside, sometimes. Bethel Woodbank going strong. #maine

Chris Dagdigian @dagdigian.com · 12/03/2026

If you do #HPC on #AWS via #ParallelCluster then check your versions. A ton of old HPC clusters are gonna fall over in June 2026 when AWS deprecates an old python runtime in Lamda. I've done 3 client upgrades this month and expect more to come ...

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Chris Dagdigian @dagdigian.com · 28/02/2026

#meshcore repeater and #meshtastic router_late role solar fixed nodes up and running in west bethel #maine — trying to grow the LORa mesh in western Maine. Also picked up a pair of Thinknode M5 portable units to use as my Bluetooth tethered clients

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Chris Dagdigian @dagdigian.com · 22/01/2026

Claude code is surprisingly good at sanity checking AWS ParallelCluster HPC config files. When paired with the MCP that queries instances.vantage.sh it can validate ec2 server config and even provide summarized cost updates on what each compute node config change will cost.

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Chris Dagdigian @dagdigian.com · 18/01/2026

Timelapse from the volunteer wood bank splitting session. 24 cords cut and split. Goal is to get to 80 cords this year. Lots more trees on the way so clearing the current pile of rounds was a huge milestone.

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Chris Dagdigian @dagdigian.com · 24/12/2025

TImelapse Art: Idiot on Tractor, 2025

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Chris Dagdigian @dagdigian.com · 13/12/2025

I lit myself and the tractor up to be super high viz for the trip, heh

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Chris Dagdigian @dagdigian.com · 13/12/2025

Timelapse of the drive to the wood bank. First time I’ve taken a tractor on open road

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Chris Dagdigian @dagdigian.com · 13/12/2025

Been volunteering at a new local firewood bank in Bethel, ME that is just gettting off the ground. Drove our tractor there 6mi over main roads which was a first. This is a Timelapse of the “rounds crew” who saw full length trees into rounds. The wood splitter teams than process the rounds.

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Chris Dagdigian @dagdigian.com · 15/11/2025

Someome awesome is feeding our little free library box with these handouts

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Chris Dagdigian @dagdigian.com · 07/08/2025

any #AWS #HPC folks familiar with the managed PCS service who can confirm that when using AWS PCS you can't configure Slurm to be aware of software licenses? Adding license at CLI does not persist & API guide seems to confirm that "SlurmCustomSetting" does not support the "License" param ...

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Chris Dagdigian @dagdigian.com · 05/08/2025

Mural progress. West Bethel, Maine

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Chris Dagdigian @dagdigian.com · 28/06/2025

some cryoEM validation runs via cryosparc.com software integrated with #AWS parallelcluster HPC and using an FSX/Lustre parallel filesystem built from S3 input cryodata bucket via Lustre/S3 data repository associations. Can't do that on-prem!

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Chris Dagdigian @dagdigian.com · 24/06/2025

demo pics; former weed grow. all the drywall and insulation was wet, moldy and full of animal droppings. rented scissor lift goes poof this week so we gotta finish up

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Chris Dagdigian @dagdigian.com · 16/06/2025

indoor & outdoor chores this weekend

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Chris Dagdigian @dagdigian.com · 17/05/2025

Dirtwork when weather allowed, indoor demo when rain got too heavy

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Chris Dagdigian @dagdigian.com · 04/05/2025

The maverick hybrid truck was just to be for high MPG errand running and dump runs …. But I needed a rock bucket for the tractor and saw a sweet hydraulic dump trailer on dealer lot…. guess I tow stuff now. Swore I’d never own anything that could tow, hah!

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Chris Dagdigian @dagdigian.com · 29/04/2025

Tractor and mini excavator stuff today

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Chris Dagdigian @dagdigian.com · 21/04/2025

@tgamblin.bsky.social -- thanks for the hint! Changing to curl for downloads was far easier than the other ideas I had

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Chris Dagdigian @dagdigian.com · 19/04/2025

Still the coolest critter thing we’ve found at the Maine spot this year

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Chris Dagdigian @dagdigian.com · 18/04/2025

@techaro.lol users of spack just became collateral damage in the anti AI-scraping wars. All I'm trying to do is use spack.io to compile relion.readthedocs.io/en/release-5... for CryoEM analysis on an HPC cluster. I know this is not your fault of course but wanted to point out an edge case

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Chris Dagdigian @dagdigian.com · 18/04/2025

Found one other #meshtastic node while out on a coffee run today. Three are mine hah

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Chris Dagdigian @dagdigian.com · 12/04/2025

Indoor chores on this rainy and snowy day

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Chris Dagdigian @dagdigian.com · 05/04/2025

western Maine project continues. When this was a gravel pit they piled the good topsoil in one spot but it got overgrown w/ sumac & weeds. Eventually we are gonna rent a big ass screening machine to separate out good dirt from rocks/trash and use the lovely soil for meadow planting & remediation.

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Chris Dagdigian @dagdigian.com · 29/03/2025

Dirtwork on ~14 acres in western Maine. The excavator joins our 40hp tractor for running tools & implements. It’s gonna be used for trail/meadow building, woods/site cleanup, trenching, tree stump removal, firewood processing etc. The tractor does most of what we need but is large and can’t dig.

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Chris Dagdigian @dagdigian.com · 29/03/2025

Chinese excavators often ship with veg oil instead of hydraulic oil so first thing you do before playing with it is swap ALL the fluids and grease all the fittings. This thing has 26 separate grease couplers

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Chris Dagdigian @dagdigian.com · 29/03/2025

No longer just a “tractor guy” as the Chinese mini excavator arrived. Midlife crisis takes many forms, heh. This is the ECE CTX8012 Pro model. 1.5 ton diesel w/ all the features I wanted like swing boom, aux hydraulics, two speed tracking, expanding tracks & quick hitch

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Chris Dagdigian @dagdigian.com · 22/03/2025

So this happened … Mother Nature is lit.

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Chris Dagdigian @dagdigian.com · 10/03/2025

Speedrunning regaining my expired #aws certs. Got five in five days, although two were the foundational tier exams. Gonna pause and study hard for the next series. I want Architect Professional, SysOps Professional and the Security Specialty certs next. AWS Professional exams are *hard* though

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Chris Dagdigian @dagdigian.com · 07/03/2025

Annoyed that I let all my #AWS professional, associate and foundational certifications expire out of laziness so I just booked 4 remote proctored exams in 4 days. Gonna clear the foundation/associate ones before taking the Professional exams later.

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Chris Dagdigian @dagdigian.com · 03/03/2025

We have a lot of stuff deployed there hah

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Chris Dagdigian @dagdigian.com · 02/03/2025

#unifi #ubnt nerd stack rebuilt at the commercial lot we are rehabbing. Paired a second UBB wireless radio bridge so we can put APs and cameras up on a third building. Radios links are *fast*. All managed via @hostifi.com

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Chris Dagdigian @dagdigian.com · 23/02/2025

I do a lot of #HPC clusters running #AWS #Parallelcluster for computational chemistry, specifically integrating it with the www.schrodinger.com small molecule & molecular dynamics tools. Wallclock time to create a new on-demand GPU node & scale it in for a job was 4min 9sec. Fastest yet!

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Chris Dagdigian @dagdigian.com · 21/02/2025

The solution is twofold - IAM policy on HeadNode that allows KMS actions AND similar permissions loaded into the KMC CMK key policy itself And you gotta do wildcard like stuff in the key policy to handle the uuid-style roles that #Parallelcluster creates by default:

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Chris Dagdigian @dagdigian.com · 21/02/2025

This type of failure used to waste HOURS of my time as I obsessively checked my AMI image, bootstrap scripts, pcluster config files etc. etc. It's not until I go to #AWS #CloudTrails and search for events emitted from the instance ID of the HeadNode .. then the 'aha!' moment:

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Chris Dagdigian @dagdigian.com · 11/02/2025

Every day I do a “old man walk”so I don’t spend all day sedentary at a keyboard this week it’s all been snowshoe. Normally I go at dusk but today was early enough to get good pics of the tracks left behind

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Chris Dagdigian @dagdigian.com · 09/02/2025

first building we are rehabbing on the 12acre commercial lot. New roof & solar already in. weed growers trashed it, all drywall and insulation was moldy & they covered the beautiful windows. nice to see it opened up! And opening up the windows makes a huge difference #Maine #BethelMaine

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Chris Dagdigian @dagdigian.com · 01/02/2025

14 years ago we made snowbank monster #2 after a big storm

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Chris Dagdigian @dagdigian.com · 27/01/2025

One downside to consulting w/ ton of lifescience orgs is sheer volume of mandatory compliance training -- I have no issue with that, except I have to essentially repeat the same Adverse Event / Pharmacovigilance / Safety etc. courses like 6-10 times a year, all with nearly identical content heh

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