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If you're able to do it at the memory controller level, would it be as simple as making two controllers always operate in lock-step, so their refresh cycles are guaranteed to be offset 50% from one another?

Given that the controller can already defer refresh cycles, and the logic to determine when that happens sounds fairly complex, I suspect that might already be in CPU microcode.

...which raises the tantalizing possibility that this lockstep-mirrored behavior might also be doable in microcode.


(1997)

Creating the Futurescape for the Fifth Element (1997) (2019)

A lot of auctions are like that. The party making the listing has no clue about the items, and exposes themself to liability if they guess wrong, so it's better to just put no information at all.

Unlike eBay, with traditional auctions, all the responsibility for "inspection" lies on the bidder -- you're expected to visit the item during the listed inspection times, if there are any, and make your own judgment of its worth. If there's no inspection period, then you're guessing blind with everyone else.

In this case, click through to the GSA Auctions listing, and scroll down to see the "property custodian", give them a call during the hours listed above on the page, and haul your butt out there to inspect the item.


Huh, where is alt.2600?

sadly the alts were a bit of a mixed bag. the root problem was that anyone could issue a control message to create a new alt group. which I verified personally. because of that intermediate nodes would choose not to download updates. partially because it was a cesspool, and largely because because bandwidth was quite limited and that's where all binaries were distributed. so alt groups had spotty distribution, which is reflected in the archives.

Dang. I had previously gone back and found some old posts I remember, I believe it was through Dejanews, so theoretically they exist out there. What's your data source?

my data source? I ran a data center in the 80s, including nntp distribution and archiving as was the general practice back then. so, just personal opinion I guess.

Hi, I have worked in numerous shielded environments, built one, and am in the process of building a second.

Wifi works perfectly fine inside a shielded enclosure, if both the AP and the client are inside the shield. It should not work across the shield, if the AP is inside and the client is outside, or vice versa. (If that worked, it wouldn't be a very good shield.)

It is entirely plausible, practical, and not even all that hard, to build precisely the environment described up-thread. "Magnetic" paint is not necessary, it just has to be conductive. Ecofoil® Ultra NT® is my favorite shielding material, it's good as a radiant energy barrier (say, to keep your hot roof from radiating heat down at your attic) and as a radiant signal shield. Which makes sense, when you consider that RF is just RF is just RF. Filtered power passthroughs aren't particularly hard (Start with the Delta 20DBAG5 and add some ferrite beads), and if you really want to be snazzy with your data passthrough, use fiber. There are all sorts of cheap-and-cheerful ethernet switches with SFP slots now.

The door seals are the tricky part. Commercial shielded enclosures go all-out with complicated lever-actuated doors that wouldn't feel out-of-place on a bank vault, but I've found that simply sanding the paint off a commercial steel door and covering the bare steel with copper tape, then engaging it with beryllium-copper spring finger-stock around the doorjamb, is sufficient for about 60-80dB of isolation, which is plenty in many environments.


Good to know! I only knew about the magnetic paint because a company I worked for a long time ago wanted to put up big mural-like pictures throughout the office space and decided to mount them on magnets and cover the walls in magnetic paint so they would stick. But then some of our conference rooms couldn't get good wifi even though the AP was right next door... We only figured out later (after putting hard-wired APs in every room LOL) that it was because of the magnetic paint.

Boredom and being alone with your thoughts is not, as popularly believed, fatal.

Of course not, but its also not an exclusive experience you can only get at resturants.

And quite frankly noisey busy resturants are a subpar place to have that sort of experience. Most people who want to do that sort of thing go to a park or somewhere quiet with nature.


My recollection is that the .MOD tracker music scene was the same. Credit your samples and nobody bats an eye! Be seen as "stealing" a sample, and you're persona non grata. It's really that simple.

So that becomes the next question -- will we see an ecosystem of modifications and adapters, to desolder surplus and decommissioned datacenter HBM and put it on some sort of daughterboard with a translator so it can be used in a consumer machine?

Stuff like that already exists for flash memory; I can harvest eMMC chips from ewaste and solder them to cheaply-available boards to make USB flash drives. But there the protocols are the same, there's no firmware work needed...


Aren't some people already doing this with consumer GPUs?


That's another lifetime-limited thing -- the helium leaks out, and you cannot (for practical purposes) stop it or even meaningfully slow it down. When it's gone, the drives are dead. And the helium leaks by calendar-days, it doesn't matter whether the drive is powered on or off.

Non-helium hard drives are basically limited by their bearing spin hours. If one only spins a few hours a week, it'll probably run for decades. Not so with helium.


I'm using the drives, not hoarding them, so normal wear and tear is likely to be a problem before helium depletion enters the picture

You just have to put your hard drive in a pressure vessel filled with helium.


It’s helium all the way down


If you're going to sell the car with the modified firmware, fine.

But at least in my jurisdiction, I can mechanically modify the car in any way I please, as long as it still has seat belts, brake lights, and bumpers of a certain height. It doesn't even still require a steering wheel; that's not specified in the law as far as I've been able to find. (Now, if I removed the muffler and made it louder than proscribed by law, I could be cited for a noise violation, but only at such a time as I womped on the gas and actually made the noise. The car itself being _capable_ of the noise is not, inherently, illegal.)

This blew my coworkers' mind once as I unplugged the passenger-side airbag while mounting a bunch of new stuff there. Apparently in some places, it requires paperwork and certifications just to unplug a connector? Weird.


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