Rob Ricci

Research professor in the Kahlert School of Computing at the University of Utah. Co-director of the Flux Research Group: https://www.flux.utah.edu. I build research infrastructure: https://cloudlab.us, https://powderwireless.net, https://emulab.net .

I do not speak for my employer, nor do they speak for me

Account locked to chill for a while, but it's okay, ask to follow! I'll probably say yes!

Certified Boffin ™

Zucchini user

Dragon Dad

Web: https://ricci.io/
Location: Salt Lake City, Utah, USA
Pronouns: he/him
FFXIV main: GNB

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Last Notes

2026-09-03 07:40:04 GMT

My favorite part of The Hobbit: The Desolation of Smaug (2013) was when Smaug says "It's Smaugin' Time" and then Smaugs everywhere

2026-08-27 02:07:22 GMT

I think my most American opinion is that putting huge quantities of ice in (many) beverages is FANTASTIC

2026-08-27 01:04:37 GMT

I just want you all to know that right now I have to cross a drawbridge over a moat to get into my house and it is AWESOME
https://cdn.discuss.systems/media_attachments/files/117/164/778/830/120/060/original/c7551e546f5f1342.jpg

2026-08-24 01:36:40 GMT

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2Stuff2Double
#monsterdon

2026-08-21 14:07:33 GMT

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Yeah, this happened to me yesterday

2026-08-19 00:28:29 GMT

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I will tell you now, before others do so less politely 😃 that people will say that they have safety concerns with data being publicly archived (stalking, physical threats, etc.)
Yes, I know: if it's public, nothing is stopping people with bad intentions from getting the data. I do, however, think that scale, persistence, searchability, ease of access, how this changes thing vs. previous user expectations, etc. are also things to consider.

2026-08-17 01:57:05 GMT

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You could show someone this scene out of context and it would make more sense than it does in context
#monsterdon

2026-08-17 01:56:16 GMT

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Please kill the duck-billed robots.
please
#monsterdon

2026-08-17 01:54:56 GMT

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Just kinda thinking that staring it down with your glowing eyes to open a cabinet is not an efficient design
#monsterdon

2026-08-17 01:52:17 GMT

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ROBOT RACISM
ROBOT RACISM
WHY DID YOU DO THIS TO US
#monsterdon

2026-08-17 01:49:58 GMT

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Oh my god I thought maybe I would find these robots charming but NO
#monsterdon

2026-08-17 01:46:42 GMT

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"you've made me waste nearly five hours over this"
Aha, now we know how long the shooting schedule was
#monsterdon

2026-08-17 01:45:07 GMT

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Hmmm... where can we film for cheap, hmm ....
#monsterdon

2026-08-17 01:41:16 GMT

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Wait, I just realized! The reason we're watching this movie is that it's another entry in the Real Estate Transaction Cinematic Universe!
#monsterdon

2026-08-17 01:39:00 GMT

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Somehow, I don't think that understanding why this fight just broke out would increase my enjoyment of the movie
#monsterdon

2026-08-17 01:35:45 GMT

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"At least, for a brief, wonderful moment, we generated an extraordinary amount of value for a gold guy in an orange wig"
#monsterdon

2026-08-17 01:32:20 GMT

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Does the movie have:
* At least two guys with mustaches
* That have a conversation
* About something other than another guy with a mustache
#monsterdon

2026-08-17 01:15:13 GMT

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This movie has all of the plot points. All of them.
#monsterdon

2026-08-17 01:11:25 GMT

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this is ARM-2 D-2
#monsterdon

2026-08-17 01:10:47 GMT

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Usually when a 70s movie just comes out and says racism ... that is ... not a sign it is going to treat the subject with care
#monsterdon

2026-08-17 01:09:12 GMT

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🔍️ where to buy collars taller than my head
#monsterdon

2026-08-17 01:06:11 GMT

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Holy stock footage that was filmed before color was a thing Batman!
#monsterdon

2026-08-17 01:04:35 GMT

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We should make a tier-ranking for the mustaches in this movie
#monsterdon

2026-08-17 01:03:33 GMT

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This villain guy is the inbred child of Honey Baked Hams
#monsterdon

2026-08-17 01:02:37 GMT

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Everything about this screams "we don't know how to make a movie"
#monsterdon

2026-08-17 01:00:54 GMT

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From the title and the year it came out I suspect I could guess just about everything about the plot and characters and be pretty close to being right
#monsterdon

2026-08-17 00:11:59 GMT

Coming soon to a feed near you! Tonight #Monsterdon is watching ... uh oh I better go look it up!

2026-08-15 17:26:08 GMT

Went out to dinner with my spouse for our anniversary last night, it started off with them asking me a question about replacing a lightbulb, turned into a seminar on electricity, a discussion of the electrical grid, with a detour into constitutional law. We got back to answering the lightbulb question at the end of the seven course dinner.
We can still have a good time together after 21 years!

2026-08-15 15:36:59 GMT

Oh. Huh.
https://mcconnell.living/

2026-08-14 02:37:10 GMT

I think it's so fucking great that the LOGO for Hamilton is a MASSIVE SPOILER, and they just get away with, amazing
https://fd.discuss.systems/media_attachments/files/117/091/534/702/425/369/original/8fda0fff7b4ef77b.jpg

2026-08-13 02:34:15 GMT

If my computing environment appears to be working too well I get suspicious

2026-08-08 21:56:04 GMT

XSD stands for XML Stigmata Definition

2026-08-08 05:12:25 GMT

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I could rant about how many different icons mean "share" but what would be the point

2026-08-08 05:11:33 GMT

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oh no

2026-08-08 04:58:43 GMT

If you ever feel like you suck at your job, just remember that someone designed the Share menu in Android

2026-08-06 19:34:14 GMT

RE: https://infosec.exchange/@josephcox/117050158886532284
Are we sure they didn't stop travel because SAP Concur is unusable as a travel management system?
#note17ph…syh8

2026-08-06 14:34:04 GMT

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haha, wow, my first website would be like 29 years old, crazy how much closer it is to the existence of the first one than today!
Yes, IA has it. No, I will never give you the link.

2026-08-04 15:47:33 GMT

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It seems to have information on fewer repos than software heritage ... which could be a good thing, if it doesn't count deleted or archival ones as Timo pointed out. I will give it a look. My intuition here is that these are going to be in the noise compared to the 400M+ repos getting tracked right now, but it's worth trying.

2026-07-31 03:46:49 GMT

Tech Company: At long last, we have started wearing the One Ring from classic fantasy novel Cast The One Ring Into The Fires of Mount Doom.

2026-07-28 18:39:53 GMT

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I only understand software architecture when it is explained to me using the XKCD about the one guy in Nebraska

2026-07-27 01:35:43 GMT

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love how they filmed in exactly two locations:
1) office
2) woods
#Monsterdon

2026-07-27 01:33:53 GMT

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hell yes love this closeup cricket photography! more! more!
#Monsterdon

2026-07-27 01:31:07 GMT

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I appreciate that the cop or military dude or whatever he is is equally dismissive of the man AND the woman, this is woke
#Monsterdon

2026-07-27 01:28:51 GMT

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As a Utahn, I know that the only cure for a plague of giant locusts is a swarm of even larger seagulls :gull_scream:
#Monsterdon

2026-07-27 01:27:44 GMT

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🦗 ‼️
#Monsterdon

2026-07-27 01:24:10 GMT

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This is a real progressive gentleman, he's letting the woman drive
#Monsterdon

2026-07-27 01:23:01 GMT

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Lab assistant: 🤙 👏 🖕
#Monsterdon

2026-07-27 01:17:30 GMT

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What do you think they have said more often in this movie
#Monsterdon

2026-07-27 01:16:09 GMT

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Hello! You startled me with your handsomness
#Monsterdon

2026-07-27 01:15:23 GMT

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The USDA is going to be the villains? Who wrote this shit, RFK Jr?
#Monsterdon

2026-07-27 01:07:48 GMT

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ACAB includes All Cops
#Monsterdon

2026-07-27 01:06:02 GMT

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RIP Ludlow. There's a reason it's not the University of Illinois Urbana-Champaign-Ludow
#Monsterdon

2026-07-27 01:03:17 GMT

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No, they did not survive the cold open, apparently
#Monsterdon

2026-07-27 01:02:22 GMT

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These credits are designed to make watchers clean their spectacles
#Monsterdon

2026-07-27 01:00:39 GMT

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scandalous!!!
#Monsterdon

2026-07-26 22:06:51 GMT

When this post is approximately 3 hours old (at 7 PM MDT / 1 AM UTC), mysterious #Monsterdon toots will come bubbling up from the depths!
Will you watch along? (It's free on Tubi and there are other free ways to watch too!) Will you mute the hashtag? Will you just shrug and get confused?ONLY YOU CAN SAY!
Tonight! Giant crickets, apparently? I still need confirmation about whether we're talking about the insects or the sport. Either one sounds like a good time though, and like they could lead to the end of the world: Beginning of the End (1957)

2026-07-13 01:07:34 GMT

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"oh them white folks 🙄 " - the driver
#Monsterdon

2026-07-13 01:06:05 GMT

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I thought she was doing coke not x
#Monsterdon

2026-07-13 01:02:04 GMT

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Hi, I'm afraid we might be in for some terrible racist tropes, based on these opening shots
#Monsterdon

2026-07-13 00:06:19 GMT

When THIS POST, this VERY POST is about 1 hour old, the heavens will burst open and #Monsterdon will rain down! Join along, or click on the hashtag to mute it (in Mastodon, other server software probably works differently)
Tonight, we are watching Wolfen (1981) and based on the name, I must assume that it's about ... idk, your guess is as good as mine.

2026-06-20 05:53:13 GMT

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FWIW, I didn't personally find this article to be particularly snobbish or arrogant. I think it's quite well written, and while it does have a particular viewpoint and is written with a strong voice, I think it's making a good faith attempt to explain something that is a frequent point of confusion/contention when people are discussing the fediverse and atmosphere.
However, I think it uses a metaphor that's flawed enough that it's not really helping; here's my part of the thread on that:
https://bsky.app/profile/ricci.io/post/3moogiuvkjc2e
In short, article positions the data storage (PDS) as the blog in its analogy, but I think the PDS is actually more like the backend database for the blog. When people familiar with the fediverse and Web in general ask "why are there not more atproto instances" they are not asking why there are not more databases with people's raw blog posts in them, they are asking why all the blogs are served through a small number of websites.
This particular exchange, I think, helps to clearly explain the difference in how Dan and I are looking at these networks:
https://bsky.app/profile/danabra.mov/post/3moovf2g2dk2u
https://bsky.app/profile/ricci.io/post/3moovkbywnc2t

2026-06-15 01:40:45 GMT

This Nicky guy is what happens when you use CHA as your dump stat then OD on Andrew Tate
#Monsterdon

2026-06-15 01:20:04 GMT

"The real force of the Atom has never been calculated"
Einstein: "Am I a joke to you?"
#Monsterdon

2026-06-11 19:51:58 GMT

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There are lots of cases where I listen in on, but stay out of, discourse involving communities I'm not directly a part of.
I do this because I want to learn about people and community dynamics. Understanding fault lines in other communities is a way to understand my own communities as well. Seeing the ways that people effectively resolve conflicts or differences - or don't - from a distance is a way of preparing for times when I'm in the middle of it.
But I stay out because I know I have neither the full context nor anything at stake. I do my best not to judge these communities based on the conflicts they have, because every community has some level of this, and internal discussion reflects things that communities need to work on that are not necessarily ready (if they ever will be) for how they engage with outsiders.
I try to approach these sorts of things as a student, not a spectator or a tourist.

2026-05-11 14:33:26 GMT

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Perhaps
https://maddox.xmission.com/
?

2026-05-11 14:25:04 GMT

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The reason I went on this little tour was to put in perspective the proposed Stratos datacenter project in Box Elder County, UT.
Stratos is supposedly designed to eventually reach a size of 9 GW. That is more than double the 4 GW that the entire state of Utah currently uses. The entire campus is supposed to be big enough that, for comparison, it would fill over 10% of the Salt Lake Valley, as shown in this image (which I didn't make).
That last datacenter campus? At ~160 MW, those three buildings put together are designed for a load about 1/55th the size of Stratos. That 300 MW natural gas power station we saw in the background? Stratos is supposed to generate its own power on-site, so it will need 30 of those things. (Or maybe more - remember PUE?)
In terms of carbon output, this thing is designed to be an absolute monster.
There's not much getting around that. They have handwaved about including solar and/or wind, but without anything concrete, we should assume this is a whole lot of carbon.
How about water?
Well, that's harder to tell, given all the vagaries and "if"s in the public information so far.
Remember, a datacenter has to get rid of a lot of heat. A datacenter that is generating its own energy on-site has to get rid of *far* more heat.
In the desert West, the most *energy* efficient way of getting rid of heat in the hot summer months is evaporative cooling: you boil water. This has, historically, been a major way of cooling both natural gas plants and datacenters, as well as homes, etc.
The same reason why this works well in the west is the same reason why it's problematic: we have very dry air, so evaporative cooling is very effective, but having dry air is connected to the fact that we don't have much water to begin with.
There *are* ways to air-cool natural gas turbines, and there *are* ways to cool datacenters that are not evaporative cooling. They are more *water* efficient. But they are less *power* efficient, which means, in this context, burning even more natural gas.
The backers of Stratos claim that they are trying to get some very new, high-tech gas turbines that operate without water cooling, or at least with very little. That does assuage some water concerns. But their language is very hedge-y - they're trying, they hope to jump in line for the limited supply of them, etc.
They also claim they will use "closed loop" water systems for cooling the datacenter. There are several things this *could* mean, and we need to know more in order to actually understand it. Most cooling systems for datacenters and even large buildings have a closed loop of water (or another coolant) for moving heat around. That's because we cannot *make* cold, we can only *move* heat. In some datacenters, this cold loop comes into the room, where it's used to cool air, which is blown across the servers. In higher-power-density datacenters, the coolant loop comes all the way to the individual rack in order to cool the air right before it enters the servers. In the most high-tech datacenters (which Stratos would likely be), it comes all the way *inside* the server, directly exchanging heat with the hot bits like CPUs and GPUs.
Coolant in these kinds of systems circulates, it's closed, you can generally consider the coolant loop to consume very little to no water after it's been filled.
But: you still have to make the heat go away somehow. This is where Stratos *might* use evaporative cooling. Or they might opt for one of the more expensive, less energy efficient dry systems. Saying "we have a closed loop" only tells us *part* of the story!
Here's what we know: the Stratos people have secured 13,000 acre-feet of water rights. In numbers that mean more to most of us, that's about 4 billion gallons per year.
They *claim* that's far more water than they need, and they won't use most of it.
But: if they don't manage to get their air-cooled gas turbines (which, in addition to being less efficient, also cost more), or decide to go with some evaporative cooling for the datacenter (because it's cheaper and uses less power), they could very easily use that much water. We are very much in a "trust me" situation, and it's not clear that we *should* trust what developers say when they are trying to get permits. We need to get independent studies and binding contracts.
For those who aren't locals, you might not be aware, but: the Great Salt Lake is shrinking. People are trying (not hard enough, probably) to save it. Not just because hey, what would we call our city without it, but also because the lakebed is full of chemicals we'd rather not be breathing in, thanks.
Stratos would not literally pull water out of the lake (which it is quite close to). But: the water rights they have obtained are in the watershed of the lake. So: if they use the water rights they have obtained, they might well contribute to the drying up of the lake.
The point here is that: they are hoarding water rights that they claim they will not use - the more reasonable bet is to assume they will use them; we need a study by actual hydrologists to understand whether using the water would accelerate the lake's demise.
And, you will notice that I have not even touched on a ton of *other* issues, such as:
1) Is there actually demand for all of these computers?
2) Would it be a good idea to fill this demand even if it does exist?
3) Can we build enough computers to fill this thing in a reasonable time anyway?
4) How far will this project get before the AI bubble pops, and will it leave anyone other than the investors holding the bag?
5) If it does get fully built, what other resources (like more water rights) might they go after?
6) Is it a wise idea to provide huge tax breaks to companies that expect to be highly profitable?
7) This is being done though the Military Installation Development Authority - what's the actual military connection here?
8) Regardless of whether it's wet or dry, is dumping this much heat into one valley a good idea?
9) There's no way that burning that much natural gas doesn't raise gas and electricity prices.
10) Can we trust the developers' numbers for how many jobs this will create locally?
Just to name a few.
https://fd.discuss.systems/media_attachments/files/116/556/393/362/676/935/original/2b43f78af8dc6cd3.jpg

2026-05-11 14:19:17 GMT

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Next, an even smaller datacenter, that just about anyone in #SLC has seen! This is XMission, a local Internet Service Provider that's been running since 1993, so one of The Ancients in Internet time. It's on a very busy part of 4th South, and if you've been by at night, you've seen the big LED display on the front of the building that they put various animations on.
One of the things that I *think* is probably in this building is SLIX: https://slix.net/traffic/ - this is an Internet Exchange Point (IXP), where various carriers meet up to exchange traffic without it having to travel long distances. These are often run as a sort of community infrastructure - it's in the best interests of all networks involved to connect to each other so that they can do their jobs more efficiently.
SLIX is fairly small (according to their own data they carry ~200Gbps, with some spikes up to 1Tbps). There are about 40 networks that meet there: https://slix.net/participants/ . Funny story, when I first got Google Fiber at my house, I was getting routed through California to get to the University of Utah campus just a few miles away. I pinged a guy I know who pinged a guy he knows who ... learned that some of the participants in SLIX didn't have their routes set up right. A config change later, and not only me, but basically everyone on any commercial ISP in the Salt Lake Valley had much more direct routes to campus!
https://fd.discuss.systems/media_attachments/files/116/556/375/107/713/967/original/55c805caa4d6a639.jpg

2026-05-11 14:18:33 GMT

There's a lot of stuff going around about datacenters, so I decided to do a quick tour yesterday of some of the datacenters in the Salt Lake Valley. Some are indeed quite large, but there are a bunch of smaller ones too - and they are not always where you think!
All of these are publicly known, and you can find them (and ones in your own area) at https://www.datacentermap.com/ .
Let's start with a datacenter that I go by all the time! It's across the street from my grocery store in downtown #SLC. It's listed as a colocation facility; datacenters are famously secretive about who their tenants are, but we can guess that it probably hosts servers belonging to nearby businesses, especially ones that want their storage, etc. nearby, but don't want to have to maintain a secure, cooled room. Given the number of banks that have headquarters nearby, I'd bet at least some of them are customers.
This is a fairly little guy, with apparently 16k square feet of floorspace and 1.6MW of power.
https://fd.discuss.systems/media_attachments/files/116/556/372/435/990/732/original/bd242a025762872d.jpg

2026-05-11 02:21:53 GMT

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I don't understand what is going on, and I get the distinct impression that I would be no better informed if I had actually seen the first hour
#monsterdon

2026-05-11 02:17:57 GMT

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these soldiers have the worst taglines ever committed to celluloid
#monsterdon

2026-05-11 02:13:05 GMT

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jfc they're in jetpacks now you don't have to keep picking angles that make me look at the monster's crotch
#monsterdon

2026-05-11 02:12:17 GMT

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I think I missed how exactly the jetpacks are supposed to help
#monsterdon

2026-05-11 02:10:46 GMT

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"redirect to following coordinates to pick up a doordash order"
#monsterdon

2026-05-11 02:10:01 GMT

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I can't tell if I'm supposed to hate these soldier guys as much as I do
#monsterdon

2026-05-11 02:06:14 GMT

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You guys this script is making me believe in time travel because it was clearly written by an LLM
#monsterdon

2026-05-11 02:05:01 GMT

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good job guys you won it's gone
#monsterdon

2026-05-11 02:03:16 GMT

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This thing is disturbingly (somewhat) agile for a kaiju
#monsterdon

2026-05-11 01:59:39 GMT

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You guys the persistent choice of camera angles that force us to confront the kaiju's lack of any junk is a fucking CHOICE
#monsterdon

2026-05-11 01:58:37 GMT

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naming the legally-non-infringing gas station "oilberg" was a pretty good one
#monsterdon

2026-05-11 01:56:28 GMT

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People screaming and running, good, good
#monsterdon

2026-05-11 01:55:18 GMT

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This kaiju is CG-animated as if it weighs about 5 pounds
#monsterdon

2026-05-11 01:53:31 GMT

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Military man with cigar, check
#monsterdon

2026-05-11 01:52:42 GMT

Belated #monsterdon ing

2026-04-18 03:35:01 GMT

My "we care about your privacy" sticker on my Privacy Violator 3000 glasses is raising questions already answered by my "we care about your privacy" sticker

2026-04-17 04:08:07 GMT

One of the things that's really important to me as a research professor is to have students who are confident in questioning me and disagreeing with me - I'm not always right, I make mistakes, I get the wrong mental model in my head for systems, I miss things. Because there's an inherent power imbalance between me and my students, one of my main tasks is to build up deserved confidence in my students, and to make it clear that they are always free to disagree without penalty.

2026-04-15 19:11:02 GMT

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I thought about writing a review for this thing before I return it but I just can't, I've already sunk too much time into trying to make this usable so I'll just say this: if your use case is "I want to be able to read and annotate PDFs", absolutely do not buy these devices

2026-04-15 19:08:03 GMT

My Remarkable tablet died and I'm trying a Boox, and I thought I had a pretty good sense of all the ways in which software could be awful, then here comes Boox with a "hold my beer!"

2026-04-11 18:35:35 GMT

Hey who else slept in, ground their coffee, put the kettle on, then dumped the already ground coffee back into the grinder?
Just me?

2026-04-08 23:56:38 GMT

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never gonna give up on this stone
https://fd.discuss.systems/media_attachments/files/116/371/785/614/158/554/original/1bfcea9e51fc7f70.jpg

2026-04-08 23:54:20 GMT

can anyone loan me some cash
https://fd.discuss.systems/media_attachments/files/116/371/778/506/530/976/original/9446a9330687c7a1.jpg

2026-04-07 00:53:51 GMT

Bots on this instance. Bots on Bluesky. Bots trying to scam their way into CloudLab. My mom reading LLM-produced books
In the last 24 hours
I'm so so tired

2026-03-27 05:02:54 GMT

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there was a *lot* of c64 stuff there, I only took pictures of a few things
Oh and I was kind of negligent in not taking pictures of the paper serial terminals in action

2026-03-27 01:05:36 GMT

Some photos from @npub1thr…w4nm 's UNIX V4 and retrocomputing talk today
https://fd.discuss.systems/media_attachments/files/116/298/435/374/633/754/original/a1ca8333fcda40fb.jpg
https://fd.discuss.systems/media_attachments/files/116/298/435/901/508/008/original/cf08fde212e605cc.jpg
https://fd.discuss.systems/media_attachments/files/116/298/435/922/742/631/original/b6c8a41effacb785.jpg
https://fd.discuss.systems/media_attachments/files/116/298/441/923/104/927/original/e35537bbd9c3391a.jpg

2026-03-24 00:37:08 GMT

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is that just the default snacc pfp? anyway they seem to be trying unsuccessfully to reply to you

2026-03-24 00:13:39 GMT

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https://fediverse.org/admin

2026-03-12 13:33:39 GMT

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don't tempt me ETHAN

2026-03-10 17:01:24 GMT

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But just imagine ... a mailreader that lets you avoid reading mail ... a better world is possible

2026-03-10 16:52:25 GMT

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Look if you had a choice between (a) writing a mailreader and (b) actually reading mail, why would you take (b)

2026-03-10 15:27:49 GMT

My mailreader is capable of opening mailboxes with over 1.4 million messages before it's capable of composing mail, because that's how I roll

2026-02-13 19:15:48 GMT

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I normally read it with mbsync and mutt but today my mailbox is nearly full and everything is hanging so bad, including the official android app and web interface that I can't actually delete anything