Posts by cyberdemon

Trump derails Chinese H20 GPU sales, forcing Nvidia to eat $5.5B this quarter

Re: Open note to all billionares and high-end millionares.

If he keeps mugging off everyone around him, including his own supporters, civil servants, corrupt officials, gangsters, foreign leaders and powerful businessmen who have more money than he ever will, then he is going to find himself wearing a pair of concrete boots at the bottom of the Potomac before the midterm elections

He's not the Messiah, he's not even the Antichrist, he's just an arrogant, treacherous, very naughty boy who will get what's coming to him eventually.

Dead or alive, Britain hands Schrödinger's industry £121M

Re: Place your bets

The sad thing is: While we, a bunch of relatively well-educated nerds, sit here laughing at how utterly frivolous and doomed to fail these hype-train technologies are (Fusion Power, Quantum Computing, AGI), the UK so-called Labour government is spaffing hundreds of millions of taxpayer pounds on each, while slashing welfare, social care, education, etc..

"The last 14 years of Tory government has completely wrecked the UK! .... So we'll just carry on with all of their policies then"

Re: Place your bets

Well indeed, but the core of the Sun is so huge that it has the approximate volumetric power density of a compost heap... About 300W/m3

Which is why Earth-bound fusion is so difficult - we need pressures and temperatures orders of magnitude higher than those found in the core of the Sun, to produce any useful amount of power in a relatively compact space.

Re: Place your bets

I worked at Culham for 5 years, I left just before Boris turned up..

5 years was more than enough to realise that Fusion is never going to be useful for anything more than an interesting science experiment.

Transporting gigawatts from a marginally-stable 150-million-degree plasma across a vacuum by sheer intensity of ionising and transmuting (neutron) radiation hardly seems like a wise, never mind economically feasible means of generating power.

It's not surprising that so much Fusion funding comes from Oil giants - anything to keep those pesky nuclear boffins occupied so that they don't come up with a fancy new Fission design

Re: Place your bets

Well, I don't think we'll ever have "Quantum Power", it being a field of rather low-energy things ...

It depends on your definitions, of course. Both "fusion power" and "quantum computing" are already here by some measure, but neither live up to the traditional definitions of power generation or computational utility.

If you mean quantum computing "able to break AES encryption faster than non-quantum techniques" versus fusion power "able to produce (controlled) power as cheap and plentiful as fission", then my wager is that Quantum is going to win that one. Assuming WWIII doesn't send us back to the dark ages first.

Google Cloud’s so-called uninterruptible power supplies caused a six-hour interruption

This.

I bought a little Schneider UPS from scamazon, but so far it has had a lower reliability factor than my house's electricity supply (quite an achievement, given my over-sensitive RCD and its propensity to trip if I scorch a naan bread in the toaster).. It is is currently bypassed because it threw a wobbly for no apparent reason yesterday (continuous tone, light flashing, no way to shut it up without shutting everything down - it was only on about 1/3 load).

Curious as to what counts as "Too much information" from your Eaton UPS though? Was it talking about its piles?

Official abuse of state security has always been bad, now it's horrifying

Sooner or later, that scent escapes the kitchen and we know something's cooking.

And a few seconds later, so does the smoke alarm..

The most important experimental distro you've never heard of gets new project lead

It's not just disk space though - having everything statically linked would also come with a serious performance penalty - with shared libraries they are cached in RAM once, whereas static libraries are loaded separately for each executable. Imagine the boot times when you are loading hundreds of copies of every library for every executable that gets called at boot..

OK great, UK is building loads of AI datacenters. How are we going to power that?

Re: Planning regs watered down and huge solar farms?

> Thought it was for houses? Nah mate, data centres.

No doubt they will still quote 1GW(peak sun) as powering "one million homes", rather than 1 million scams and fake cat-videos per second..

And no doubt with the Trump trade-war, we will see even more dumping of cheap panels and naff inverters (but no cheap grid transformers, natch)

Nothing wrong with a bit of solar, but we can have too much of it (because it is so intermittent), and its place is on rooftops, car-parks, arid deserts, and maybe by the sides of the odd motorway, NOT on farmland

Re: Hmm

Worse, the datacentres have their own OCGTs and/or Diesel (which are afaik not counted in the overall generation reporting). We may end up in a situation where datacentres act as a "flexible load" by falling back to local gas generation when the grid is short on renewable power.

The trouble with that is, datacentres being so huge, have a very destabilising effect on local distribution networks - they trip over to backup generation at the slightest sniff of a voltage dip or spike, and they do it en-masse, which can cause localised blackouts.

On top of that, they are constant-power loads, which means that if the voltage dips slightly and they stay on the grid, their current draw rises by the same proportion. That would also be bad news for distribution network operators, and it's a pet theory of mine that the Heathrow debacle may have been caused/contributed to by the concentration of datacentres in West London. (a rapidly changing localised load puts a strain on Automatic Voltage Regulation, whereby a control system at the substation moves a tap on an autotransformer to keep the voltage stable, but too much movement of that tapchanger causes arcs which can contaminate the insulating oil and prematurely age the transformer, leading to an explosion if the insulation breaks down completely)

Re: Hmm

Shurely even Ed Milliwatt realises that you can't power a datacentre with an intermittent energy source.. But then again he is a nitwit..

Ideally, we would build some nukes to power the bullshit barns, then the AI bubble pops and the rest of us can use the cheap energy that follows. But nukes sadly take very a long time to build now, due to some rather excessive regulation which the fossil fuel industries lobbied for, to save themselves from nuclear competition..

What we'll probably end up with is more renewables, and regional pricing, so us plebs have to fork out a fortune for energy while the bullshit barns get it on the cheap if they build in Scotland. Then the incentive to modernise and upgrade the transmission network disappears (why invest money to alleviate grid constraints if you can simply charge more for electricity in constrained regions?), then something goes bang and all the lights go out. Welcome to Britain.

Amazon Nova Sonic AI doesn't just hear you, it takes tonal cues too

Unless it's available locally, for running on a GPU with 24GB or less, i'm not interested

'Copilot will remember key details about you' for a 'catered to you' experience

Re: For the 94th time

Personally I'd rather poke my eyes out with a pitchfork than install anything from EA, but each to their own

Re: For the 94th time

Even Crysis.

(Ok Crysis 1 has some quirks, but it was always finickety on Windows)

For the 94th time

GOG (or at least the games therein) works happily on Linux/Wine. It's not a valid excuse to need MS Windows anymore :)

apt install gamehub for example

DOGE dilettantes 'didn't test' Social Security fraud detection tool at appropriate scale

Help us, lords of COBOL

While I agree with the sentiment that COBOL shouldn't be whatsoever involved in any web request, there's certainly a non-zero chance that it is.

Perhaps a COBOL program is required to query an ancient database, and that query is used periodically and/or on request, to update a (more modern) intermediate database as mentioned above. Or worse, the website might have to call COBOL on the fly if it needs to update the core DB.

So, any change to the interface/schema between the website DB and the COBOL DB may require a change in COBOL

Don't open that JPEG in WhatsApp for Windows. It might be an .EXE

Re: “A bug in WhatsApp”

One could say the same of Windows

Procter & Gamble study finds AI could help make Pringles tastier, spice up Old Spice, sharpen Gillette

Re: Placebo benefits

At least the Rubber Duck doesn't send all of your code or document to Someone Else's Computer and then spew completely useless (or worse) suggestions at you

Boffins turn Moon dirt into glass for solar panels, eye future lunar base power

Re: Little lugging required

A manufacturing line for glass and/or solar panels is a lot more than just a heat source though - you'd need a container for the molten regolith, various gubbins for purifying/separating it into transparent glass and Silicon, something to pour it out onto (you can't float it on water like how we make sheet glass down here on Earth), more gubbins to chop Silicon into wafers and P/N dope it, etc etc. A solar panel manufacturing plant is a big, heavy, complex thing, and usually requires a LOT of water, which usually ends up highly contaminated and dumped in some river..

How do you explain what magnetic fields do to monitors to people wearing bowling shoes?

Re: Anglepoise Lamp

Something indeed fishy about that..

1, why would the user be "illuminating the screen" with an anglepoise lamp? External light on a CRT or any emissive display makes the picture harder to see..

2, i'm surprised at any significant magnetic field from a filament bulb.. While it is a solenoid coil, it has relatively few turns and low current (50W bulb is 430mA at 115VAC or 208mA at 240V) so not many Ampere-turns and no ferromagnetic core. The field strength drops off sharply with distance too, and the filament can't have been right next to the screen

More likely, i'd guess that the perhaps-ungrounded metalwork of the lamp was acting as an antenna, which was interfering with the TV/monitor's RF input

Speech now streaming from brains in real-time

Re: An unfiltered insight into the brain?

It might not be synthesised, but it WILL be picked up

Lightmatter says it's ready to ship chip-to-chip optical highways as early as summer

Nice

But one important point not mentioned in the article is: How do they plan to pass Thousands* of Amps through this interposer to power the 'compute chip' that sits on top

* lest we forget, a 1kW chip running at 0.8V requires 1.25 kA

UK threatens £100K-a-day fines under new cyber bill

Peter Kyle?

Am I the only one who has never heard of Peter Kyle, and therefore read that as Jeremy Kyle finally detailed the plans for the bill at length today.

One imagines him sitting the offending CISOs down on his sofa and giving them a dramatic talking-to about their sordid cybersecurity failures, for public spectacle.

Mr. Smith, we have conducted an AI code-authorship analysis, which has indicated that the hideous cyber-vulnerable SAP-to-SCADA connector was in fact YOUR bastard lovechild! <audience gasps> What do you have to say about that??

Microsoft is redesigning the Windows BSoD to get you back to work ‘as fast as possible’

Re: Interns

This is what happens when you've sacked the entire senior dev team, and all that's left are interns, pointy haired bosses, and ChatGPT

Top cybersecurity boffin, wife vanish as FBI raids homes

Re: Remember!

Ah, WINE. The bane of so many a naiive backup

(rm -rf doesn't normally follow symlinks, but 'scp -r' certainly does - and when it hits ~/.wine/dosdevices/z -> / it will blindly try to copy the whole filesystem)

LLM providers on the cusp of an 'extinction' phase as capex realities bite

something useful and controllable and accurate and repeatable

Unfortunately, when you take a big pile of statistics and try to N-dimensional gradient-descent some pseudorandom noise towards something statistically plausible:

"accurate", "repeatable", "controllable" are not adjectives normally associated with this activity...

"useful" applies only where you do not care about the above, and there are many governments around the world which apparently do not care about the "accuracy", much less "repeatability" of their law enforcement or military decisions, so long as they can be overridden by those in power i.e. themselves.

AI datacenters want to go nuclear. Too bad they needed it yesterday

Re: find ways to dramatically reduce AI's electricity and water demands

I assume sarcasm, so I'm not downvoting you, but:

On-prem servers typically don't include the sort of 100+ kW racks that can run full-size LLMs. We can run quantised/pruned models locally on GPUs and CPUs, but they produce lower-quality bullshit than the cloudy bullshit-machines, due to memory requirements.

On-prem servers are (typically) designed for business functions, and are sized according to business needs. CPU frequency/voltage scaling means that even "underutilised" servers don't actually burn that much power when they are sat idle, and they don't spin up to generate useless nonsense, or scrape the internet to find more data to generate useless nonsense from. The owner pays the electricity bill, and isn't going to want to waste money on frivolous shite.

Whereas for cloud servers, often the 'leccy is included in a fixed monthly rental, and the renters feel that they must maximise the usage of whatever they are renting (which may be a 100kW rack) even if that means wasting it on frivolous shite.

Re: find ways to dramatically reduce AI's electricity and water demands

A habitual liar on Crack, more like..

If said Investors would put down their own crack-pipes then perhaps they would notice what everyone else can already see..

I wonder how much energy it has cost so far to watch the world's latest bullshit machine fail miserably at playing Pokemon (there is a twitch stream of Claude playing pokemon, I won't link it, it's incredibly dull, but it has been running for several days, and has got (checks) no further than a 5-year-old would have in much less time, and it has been playing continuously, with humans intervening to delete its data cache when it gets stuck..) If someone were to count the energy cost of that effort, i'm sure it would run into hundreds of tonnes of oil

Windows 11 roadmap great for knowing what's coming next week. Not so good for next year

Re: Am I alone in thinking ...

I didn't know that.. cheers

Also I find it amusing that there are so many Russian bots heaping praise upon that song on its U-bend page.. (presumably because it speaks of a breakdown in Western society/infrastructure)

Re: Am I alone in thinking ...

This aint no technological breakdown.. Oh no, this is the road.. to Hell.

Nvidia GPU roadmap confirms it: Moore’s Law is dead and buried

Re: a datacenter is a gigawatt

fyi, nuke plants -always- have means to dump the load. Their thermal efficiency (steam turbines) is 50% at best, so they are always dumping at least half of the 'load' via cooling towers (as do other thermal power plants). But they will size their cooling towers such that they have well in excess of 100% cooling capacity should there be a loss of load. And it is pretty common in practice for nukes to disconnect themselves from the grid at the slightest sneeze of a problem, given their safety regulations.

But of course you are correct, it would be madness (operationally) not to have a grid connection to be able to export the power when not used locally (or indeed to import it when the on-site nuke reactor is down for maintenance or whatnot). It just wouldn't be a safety issue.

Of course, this is not to say that nuke power -should- be used to power bullshit generators, only that it -could-.

Cloud Cuckoo Land

Nobody seems to have noticed this ridiculous quote:

"A datacenter is now 250 megawatts. That's kind of the limit per rack. I think the rest of it is just details," Huang said. "If you said that a datacenter is a gigawatt, and I would say a gigawatt per rack sounds like a good limit."

Shome Mishtake? Shurely he meant a Megawatt per rack? (which is already ludicrous) or a Gigawatt per datacentre?

a Gigawatt per -rack- is just thermodynamically impossible (given that chips operate up to 125C at most)

Not to mention the power requirements.. Gigawatt-scale datacentres are putting massive strain on electricity grids.. Even if his fantasy datacenter contained only 10 such "gigawatt racks", the loss-of-load event caused by a program halting would be enough to cause blackouts.

Huang has really lost the plot with this one.. Watts are not like Bits and Bytes - you can't endlessly have more of them in a chip without consequence

Carry on up the Kyber Rack?

NVidia really are up shit creek if they can't improve performance per Watt, which is what matters

CoreWeave cools its jets, downsizing IPO as investor heat fades

The bubble is popping

Same happening in China: Shiny new GPU datacentres sitting idle, because the money they are getting from renting GPUs is not worth the energy cost of running them.. Who'd'a thought it

https://www.tomshardware.com/tech-industry/artificial-intelligence/chinas-ai-data-center-boom-goes-bust-rush-leaves-billions-of-dollars-in-idle-infrastructure

Popcorn icon gravely needed

Nuclear center must replace roof on 70-year-old lab so it can process radioactive waste

Re: "Confident they have an alternative"

They'll have to decide where to put the bike shed first

Re: Alternative option.

I'm sure "Sam Bell" would do..

Joking aside though, I think the best place for well-encapsulated, vitrified waste is in the sea - water is a very good radiation shield, and provides free cooling. And if you put it in the right place it will eventually be subducted back into the earth's crust from whence it came.

And for those who would still have a problem with that: Well, what do you think happens when a nuclear powered ship or submarine sinks.. And what do you think will happen if we can't solve the energy crisis? Nations will start fighting eachother (see icon) with REAL radiological consequences!

2 in 5 techies quit over inflexible workplace policies

Re: Headphones!?

> Perhaps their speakers should have an accident

When noone is around, use an insulation resistance tester (e.g. megger) on the mini-jack plug. This will of course fry the the analogue front-end with no outward signs of damage. For bluetooth speakers, a couple of seconds in the office microwave would do the trick

Datacenters near Heathrow seemingly stay up as substation fire closes airport

Re: (earthquake, volcano, typhoon, sea monsters...).

I see - Page 40 of https://www.heathrow.com/content/dam/heathrow/web/common/documents/company/heathrow-2-0-sustainability/futher-reading/Heathrow_Net%20Zero%20Carbon%20Strategy_v13.pdf

But, this pamphlet is an oversimplification intended for pointy-haired bosses and not engineers; I don't think it's valid to take it as read that they _ONLY_ had generators for "runway lights" - it indeed says "predominantly for runway lights" but almost certainly would include other critical systems such as the ATC control tower, radar, critical IT systems, etc.

My personal theory is that in the hours following the substation failure, this clusterfuck was mainly exacerbated by grid-tie inverters, i.e. power sources such as the CHP, Wind, Solar and Batteries, which in normal conditions would merrily alleviate the load on the grid supply - until such a point as that grid supply is gone, and then they are borked, unable to sync to any upstream grid.

Then while the grid supply tries to come back on, they are unable to contribute any power. This is a microcosm of a major UK-wide issue, i.e. the feasibility of "Black Start"

The electrical engineers technicians would have to isolate _everything_ (including the EV chargers in the car park) until the total connected load was low enough that one single source could power the local grid, and then start up the grid-tied inverters one by one.

Re: (earthquake, volcano, typhoon, sea monsters...).

> A major energy analyst I had some professional overlap with some years ago and rate very highly, recently got hold of the full dataset for grid frequency.

Would that be Kathryn Porter, perchance?

I rate her very highly, too, and I hope they put her in charge of NESO (and then abolish/renationalise the DNOs)

Re: Questions will doubtless be asked

And the difference?

The US has even more privatisation and even less regulation than the UK has..

And pres. Musk and his Russian spy-muppet are busy deepening that malaise even further..

Re: "You'd hope they have a day+ of backup power. "

It's a typical double-circuit mesh substation, it has two 275kV feeds, which may well come from different places, and two supergrid transformers which can be configured to use either incoming feed. Normally I think they would use both, but I don't think they would permit a load to be so big that it would instantly trip if they had to disconnect one circuit / transformer.

The problem yesterday seems to be that a transformer exploded violently, perhaps due to contamination in the oil - it may be 60-70 years old, and it uses oil for both cooling and electrical insulation, as well as paper for insulation. Contaminants can leach out of the paper if it is too hot for a long period of time, or if there are arcs e.g. during tap-changing. And the resistivity of the oil apparently drops with temperature too, so internal arcing can be catastrophic.

Because the fire was so violent and the built-in fire suppression so ineffective, they needed fire crews with hoses and cherry pickers, which meant it was not safe to simply switch over to the second transformer - both 275kV incoming circuits needed to be de-energised until the firefighters had finished, hence the length of the blackout

I've heard (via comments referencing someone speaking to the Daily Mail) that the load was around 106%, (I assume that means both transformers running at 53%?) but if they need to take one off for maintenance then the other one is going to get quite hot..

Re: (earthquake, volcano, typhoon, sea monsters...).

> For the last few winters its been fairly common for large numbers of rural properties to be cut off for days at a time after a weather event.

True, but that's a "Distribution Network" issue. When I say "the grid", I am really talking about the transmission system, which has been generally very reliable in the UK.

> I'm not sure why the split would make the grid inherently less reliable?

Because they are weakly coupled in frequency via spinning frequency converters (a 6 pole-pair motor coupled to a 5-pole-pair motor, perhaps with a flywheel in the middle) but I am only taking it from the earlier post that the grid there is less reliable, based on all of the generators that spin up there. They also have a lot of extreme weather / earthquakes that make nuke reactors scram (or not, as the case may be) so that may be the cause, rather than the 50/60 split.

Re: Really...?

You wouldn't like to hear the representative from the Institute of Civil Engineers on the radio this morning, proclaiming that the solution to Heathrow's backup issues is...

More solar panels and wind turbines!

She'd better have been trolling..

Re: How?

Come on, can we close this utterly offtopic thread, please?

Re: Questions will doubtless be asked

Sadly, you may well be right. But i doubt we proles will ever know for sure.

-> The luck is gone, the brain is shot, but the liquor we still got! ->

(earthquake, volcano, typhoon, sea monsters...).

Or indeed, their infamous 60Hz/50Hz split.. That undoubtedly means their grid(s) is/are significantly less reliable than ours

I personally think that the UK grid has been rather too reliable - that is to say we have become complacent in expecting a 100% service.

In Cuba they suffer blackouts everyday.. I'm sure Havana airport would not have closed for a simple lack of power, because they are procedurally well used to it by now..

I think that a full scale test of our "Black Start" plan would be very useful for the UK (though no doubt costly) but I fear it may be too late to organise such a thing in today's geopolitical chaos

Re: Questions will doubtless be asked

400Hz, iirc

Re: Questions will doubtless be asked

Too many EVs in the car park probably contributed to the overload, tbh!

NASA's inbox goes orbital after email mishap spams entire space industry

Re: I can see it...

"Silicon Valley - What the Fuck Gilfoyle Does"

It includes a naughty word, hence the automatic age restriction?