Roland Dreier
@rbd.bsky.social
I put the R in RDMA. All posts based only on information from within my past light cone.
Issuing correction on a previous post of mine, I did NOT top tick the AI bubble
February 10, 2026 at 4:12 PM
Issuing correction on a previous post of mine, I did NOT top tick the AI bubble
Huh, updating my priors
February 9, 2026 at 5:50 PM
Huh, updating my priors
Although if I give myself factories on the moon, why not just leave the data centers there and use the moon itself as a heat sink?
February 8, 2026 at 8:00 PM
Although if I give myself factories on the moon, why not just leave the data centers there and use the moon itself as a heat sink?
Uh hello, the softmax function is not linear?
February 4, 2026 at 7:37 PM
Uh hello, the softmax function is not linear?
Would love to learn the story behind this bug... I've been trying out jules.google by enabling the scheduled security and UX agents on one of my public repos (github.com/rolandd/midp...) and it does indeed find useful fixes. But it journals its fixes with random future dates (here 2026-10-27)??
February 4, 2026 at 5:12 PM
Would love to learn the story behind this bug... I've been trying out jules.google by enabling the scheduled security and UX agents on one of my public repos (github.com/rolandd/midp...) and it does indeed find useful fixes. But it journals its fixes with random future dates (here 2026-10-27)??
SFPUC owns a huge chunk of the Peninsula in the Bay Area and you can access it, but *only* on a guided event. I recently got qualified as a trail guide and I'm leading my first ride on Feb 21!
Still two slots available! (It'll be ~20 miles, ~3000 feet of climbing)
webapps.sfpuc.org/Trails/Event...
Still two slots available! (It'll be ~20 miles, ~3000 feet of climbing)
webapps.sfpuc.org/Trails/Event...
February 2, 2026 at 5:01 PM
SFPUC owns a huge chunk of the Peninsula in the Bay Area and you can access it, but *only* on a guided event. I recently got qualified as a trail guide and I'm leading my first ride on Feb 21!
Still two slots available! (It'll be ~20 miles, ~3000 feet of climbing)
webapps.sfpuc.org/Trails/Event...
Still two slots available! (It'll be ~20 miles, ~3000 feet of climbing)
webapps.sfpuc.org/Trails/Event...
This makes me feel very old
February 1, 2026 at 6:10 AM
This makes me feel very old
Not at all the main point but why is the data viz trend “use the coldest color for the fastest growth”?? Second US map I've seen like this in just a couple days
January 27, 2026 at 7:48 PM
Not at all the main point but why is the data viz trend “use the coldest color for the fastest growth”?? Second US map I've seen like this in just a couple days
😬 you do not, under any circumstances, gotta hand it to Hanania
January 27, 2026 at 5:17 PM
😬 you do not, under any circumstances, gotta hand it to Hanania
Odd pair of Kevin Roose posts:
- I work in probably the most AI-pilled env possible and having agents write all your code - sure. Claude is making every decision - weird
- There's zero penalty for late adoption so far - open an agent today, type “walk me through...” and you're near the frontier
- I work in probably the most AI-pilled env possible and having agents write all your code - sure. Claude is making every decision - weird
- There's zero penalty for late adoption so far - open an agent today, type “walk me through...” and you're near the frontier
January 26, 2026 at 5:41 PM
Odd pair of Kevin Roose posts:
- I work in probably the most AI-pilled env possible and having agents write all your code - sure. Claude is making every decision - weird
- There's zero penalty for late adoption so far - open an agent today, type “walk me through...” and you're near the frontier
- I work in probably the most AI-pilled env possible and having agents write all your code - sure. Claude is making every decision - weird
- There's zero penalty for late adoption so far - open an agent today, type “walk me through...” and you're near the frontier
Generally love your data viz but having the “hottest” colors represent the slowest growth makes these maps much harder to read
January 23, 2026 at 5:06 PM
Generally love your data viz but having the “hottest” colors represent the slowest growth makes these maps much harder to read
I'm not sure it's the best model, but Gemini 3 definitely has my favorite sense of humor
January 22, 2026 at 9:57 PM
I'm not sure it's the best model, but Gemini 3 definitely has my favorite sense of humor
Very dunkable headline but it's probably worth reading what the article says too
January 20, 2026 at 4:37 PM
Very dunkable headline but it's probably worth reading what the article says too
Haven't seen the paragraph right before quoted nearly as much. I've spent a lot of time writing code and maybe more importantly reviewing code I didn't write and I think that's why LLMs don't feel like a slot machine to me - they feel familiar: like an eager but inexperienced junior developer
January 20, 2026 at 4:33 PM
Haven't seen the paragraph right before quoted nearly as much. I've spent a lot of time writing code and maybe more importantly reviewing code I didn't write and I think that's why LLMs don't feel like a slot machine to me - they feel familiar: like an eager but inexperienced junior developer
January 16, 2026 at 10:17 PM
January 16, 2026 at 9:07 PM
Concrete impact of AI coding: I read the very cool story www.openspace.org/stories/one-.... Even a few months ago I'd just have said, “Cool.”
Now on a whim I made a prototype in half a morning and I know I can make a full Strava app this weekend to auto-annotate my activities with Midpen preserves.
Now on a whim I made a prototype in half a morning and I know I can make a full Strava app this weekend to auto-annotate my activities with Midpen preserves.
![Screenshot of console output:
Loaded 28 preserves for testing.
Checking Activity 17015064138 against 28 preserves...
✅ Result: Intersected with: ["Rancho San Antonio"]
test tests::test_activity_intersection ... ok](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:sa2yiupgrjk625bb6fmv23ww/bafkreiakpjr47kwdesbcrbtymnic24tbyrsastn566rfhnl5577fe7lxzq@jpeg)
January 14, 2026 at 6:46 PM
Concrete impact of AI coding: I read the very cool story www.openspace.org/stories/one-.... Even a few months ago I'd just have said, “Cool.”
Now on a whim I made a prototype in half a morning and I know I can make a full Strava app this weekend to auto-annotate my activities with Midpen preserves.
Now on a whim I made a prototype in half a morning and I know I can make a full Strava app this weekend to auto-annotate my activities with Midpen preserves.
sorry, but you have to recognize that “we're losing the artisanal traditions of the craft” is a pretty funny trope to apply to ... software engineering
January 14, 2026 at 3:35 PM
sorry, but you have to recognize that “we're losing the artisanal traditions of the craft” is a pretty funny trope to apply to ... software engineering
You can tell a lot of different stories with bsky.jazco.dev/stats. Zoom out a little to include the 2024 election and the latest surge barely looks like a blip.
January 13, 2026 at 4:23 PM
You can tell a lot of different stories with bsky.jazco.dev/stats. Zoom out a little to include the 2024 election and the latest surge barely looks like a blip.
It makes me feel like I'm losing my grip on reality that Trump takes unprecedented action tearing at the foundations of our whole economic system, and then everyone just shrugs and goes about their day
January 12, 2026 at 4:59 PM
It makes me feel like I'm losing my grip on reality that Trump takes unprecedented action tearing at the foundations of our whole economic system, and then everyone just shrugs and goes about their day
Policing experts, and also anyone who has survived crossing a road
www.washingtonpost.com/national-sec...
www.washingtonpost.com/national-sec...
January 11, 2026 at 5:37 AM
Policing experts, and also anyone who has survived crossing a road
www.washingtonpost.com/national-sec...
www.washingtonpost.com/national-sec...
Also clicking the link "please see Why not LLMs?" is pretty good
January 9, 2026 at 3:30 AM
Also clicking the link "please see Why not LLMs?" is pretty good
This is the funniest one to me. It's one step away from
python . . . . . . . . . . . . . many AI models are written in python
python . . . . . . . . . . . . . many AI models are written in python
January 9, 2026 at 3:28 AM
This is the funniest one to me. It's one step away from
python . . . . . . . . . . . . . many AI models are written in python
python . . . . . . . . . . . . . many AI models are written in python