topspin

5 ms·

1.
by topspin 5d ago
> except the high priests of the LLMs / nascent Cthulhoid godlings Let's not be this flippant about where the real pressure for this is coming from. Presidents and their appointees come and go. The people pushing the regulato
2.
by topspin 5d ago
mmap(2) in Unix predates Linux itself by several years (1988 Sun, 1990 BSD). mmap(2) was present in Linux well before any of the high performance databases, file systems and other applications that use(d) O_DIRECT appeared on Linux. O_DIRE
3.
by topspin 8d ago
It's more about frequency than priority. When something has to be serviced tens of thousands of times a second, "a dozen or so" becomes a problem. If you have the silicon that solves this, you can retain the model. If you
4.
by topspin 11d ago
SpaceX has >11,000 satellites whipping around the planet. They increased the number of LEO sats by nearly one order of magnitude in bit more than 5 years. So apparently, in the US, the culture, expertise and infrastructure do exist to d
5.
by topspin 13d ago
Whatever OS/applications you have run in low priority ISR contexts, taking however much time they wish. When a high priority interrupt happens, the lower priority ISR contexts are preempted and then resumed after the high priority ISR
6.
by topspin 13d ago
> On more complex systems there is a pretty good chance you will end up with locked up hardware if your ISR is long enough. That is true of all such systems, from MCUs to the greatest CPUs ever made, and all prevailing software stacks ru
7.
by topspin 14d ago
I am aware. That "dozen or so" is a problem: when everything is an interrupt, there are no interrupts: it's just scheduling, and things that must be scheduled frequently can't suffer "a dozen or so" overhead.
8.
by topspin 14d ago
> The best case latency is higher than doing the work at interrupt level One approach is to do everything in ISRs, a la RTIC. That requires efficient, vectored, nested, tail-chained, base priority-ed interrupt silicon, and a lot of it,
9.
by topspin 14d ago
> How does one convince business leaders to bring it back? There are precisely 1.0 ways to do that: make all of the alternatives more expensive. That's it. Nothing else will move the needle. I don't believe it is possible: eve
10.
by topspin 14d ago
> I believe the math says the I6 is smoother than the boxer 6 Both designs (I6 and boxer) can have perfect primary and secondary balance. An I6 should be a smooth ICE, but there are other sources of vibration in these systems beyond inh
11.
by topspin 14d ago
The fastest reciprocating ICEs I've ever heard of are small, two stroke model engines. Some of those can approach 30K RPM, but that is rare, and I don't know if anyone still manufactures those. ~20K isn't rare for these sma
12.
by topspin 14d ago
A rifle round fired at 3000 feet per second from a 1:7 twist barrel turns a bit more than 300,000 RPM.
13.
by topspin 16d ago
Brave does what it says on the tin: It's another Blink based browser that is now rather mature and trouble free. It's supported by very responsive developers that provide a fully integrated ad blocking engine that is superior t
14.
by topspin 16d ago
"it was assumed if you kept up with updates and patches your risk would be low" I don't share that view at all. Updates and patches handled known risks. Updates and patches are often years late: side channel vulnerabilities
15.
by topspin 18d ago
The better question is: what is the net gain for the overall system? If PIM reduces the net thermal load and power consumption of the system for the same workload, then it’s a win regardless of where the heat sinks end up. The customers Sam
16.
Nancy Grace Roman Space Telescope Launches this Sunday(npr.org)
64 points by topspin 19d ago|2 comments
17.
by topspin 21d ago
> Absolutely yes That's pretty strong. Recalling our pre-AI condition, there were side-channels built into our silicon, zero-day/zero-click browser+mail+IM attacks, supply chain attacks, industrial scale ransoming, mass creden
18.
by topspin 21d ago
> assume nothing is safe anymore When was it ever possible to assume safety?
19.
by topspin 21d ago
> the US is geographically huge and more sprawled out. There is ample historical evidence that this is a poor excuse. Long ago, leaders in the US understood the value of universality. You'll likely recognize this as the Network Eff
20.
by topspin 29d ago
> How would I break through, if not ads? Make YouTube videos. Food porn is a thing, and some subset of that crowd will want to watch you fry stuff with your "pro" fryer.
21.
by topspin 1mo ago
"but say goodbye to castelated modules hand soldering is going to be harder" Yes, the package will be less friendly to DIY assembly. The greater number of GPIO are definitely welcome however: it's a high feature device and t
22.
by topspin 1mo ago
Beautiful. I read the "They Should Have Known Better" article and forgot it. I've seen this before. I know it's hot air and does not matter, and I can't afford to worry about things that don't matter. When I
23.
by topspin 1mo ago
> Geoblocking, fail2ban I use both on one port 22 host. Not much actually touches the server: maybe 5 hosts a day get banned. Meanwhile, China and the Netherlands are forever getting blocked and logged by geoblocking. I check the 24h lo
24.
by topspin 1mo ago
I've noticed that RealVNC has hidden their formerly free VNC desktop client, now called RealVNC Classic Viewer, behind an enterprise subscription login, and replaced it with a different cloud first thing, RealVNC Connect Viewer, that r
25.
by topspin 1mo ago
2026-08-13: "Ukraine’s Main Directorate of Intelligence (HUR) said it identified an Nvidia Jetson Orin computer module inside Russia’s new S-71M Monokhrom air-launched cruise missile" https://www.sofx.com/nvidia-
26.
by topspin 1mo ago
> We have a CiM with Taalas HC1 My understanding is that Taalas HC1 is "mask-ROM" fabricated at 6 nm for bulk model base-weight storage, and some SRAM for KV cache and other bits: https://www.eetimes.com/taalas-
27.
by topspin 1mo ago
> Surely it is clear to you that Read-Only /Memory/ does not /compute/ > Because the ROM does not "run" its contents... Conventional GDDR/HBM don't compute either, yet inference is implemented u
28.
by topspin 1mo ago
> our current need is not really for "ROM" A fast, low power ROM is the key ingredient to near term local inference with large models at low power. If I could offer you a $500 ROM that provided the model data for frontier infe
29.
by topspin 1mo ago
> Anyone serious about security will want to bring their own sandbox anyway Exactly. It's not as though it's difficult. It never occurred to me to not do this from day one, and it astonishes me that anyone runs this stuff bar
30.
by topspin 1mo ago
> It's not on the unions, it's on the people who hired the officers. This model you have inside your head, where there are public officials responsible for hiring that can exercise whatever they imagine are the prerogatives of

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