jabl

62 ms·

751.
by jabl 4y ago
Many old-school unixes were developed in the single-thread days. When they added support for threads they were an opt-in feature, like the above macro definitions, and using libraries like libc_r.so instead of libc.so, and so on. AIX even h
752.
by jabl 4y ago
> Why not both innovation and cost cutting? Ideally yes, but has anybody seen any indication that this is actually happening in this case? Until we see such a thing, I think people have reason to be skeptical. > Reproducing LLVM requi
753.
by jabl 4y ago
Seems the plan is to milk captive customers as long as possible with minimal investment. Also, a few years ago they announced that the XL series of compilers were being rebased on LLVM/clang. Of course they claimed it was to enable inn
754.
by jabl 4y ago
Finland has plenty of those too. Here's a video of an F-18 doing a landing and takeoff from such a stretch of road during some exercise: https://www.youtube.com/watch?v=Vj_eJxy8ojk
755.
by jabl 4y ago
That is true, but OTOH if we're going to address climate change we can't keep on extracting natural gas like there's no tomorrow. So helium could become a pretty expensive thing.
756.
by jabl 4y ago
A quick look at a phase diagram I found online suggests the boiling point would be somewhere close to -160C at 30bar. Hard to see how that would be a problem in this application.
757.
by jabl 4y ago
I would suspect that N2, being diatomic, has vibrational and rotational modes which would cause a bit of inefficiency in the cycle. Would be interesting to see how much.
758.
by jabl 4y ago
This was a favorite of mine growing up. But I made the mistake of trying to watch it with my kids once, and behold, it had turned from showing the best of the Disney classic cartoons into running trailers for upcoming Disney movies. Thanks
759.
by jabl 4y ago
Indeed. The kernel isn't a museum, code or architectures that aren't used can and will get dropped. But the converse is also true, if somebody steps up to regularly test and fix issues in some code it can stay. Even if said somebo
760.
by jabl 4y ago
> UB for signed char Signed overflow is undefined in C, but this was implemented in ASM. I'm not familiar with the m68k isa, but I'd be very surprised if it doesn't define signed values to wraparound as is natural for a tw
761.
by jabl 4y ago
The people behind LEON have a next generation family of cores NOEL which are RISV-V based. For the time being they are still selling LEON but I'd expect it to be obsoleted at some point.
762.
by jabl 4y ago
Sure they have an incentive to innovate, namely taking market share from their competitors. The reason why they want a big pot of gold is that developing a new competitive jet engine is frighteningly expensive. The established vendors, with
763.
by jabl 4y ago
Sustainable aviation fuel (SAF) is a type of fuel that is ostensibly sustainable (however you define it), but fulfills all the requirements in the Jet A-1 specification. The idea being that they are completely interchangeable. So it's
764.
by jabl 4y ago
There were actually plans for nuclear powered locomotives in the 1950'ies. E.g. the X-12 by Lyle Borst. See e.g. https://books.google.co.uk/books?id=bVMEAAAAMBAJ&lpg=PA78&ot...
765.
by jabl 4y ago
> At almost 6 liters, yet producing only 200hp, it's wildly fuel inefficient Is it? I've always thought that while GA engines are in many ways stuck in the 1940'ies, they are actually quite efficient. Wikipedia seems to ba
766.
by jabl 4y ago
Meh. Just hold your nose when the processor boots until it gets into protected or long mode and you're good to go. If ARM or RISC-V eventually take over the x86 market, it will be due to business model reasons and not the superiority o
767.
by jabl 4y ago
From what I've read (which I guess is largely speculation, although by people more familiar with the topic than me), the B-21 doesn't really push the envelope. The only really new thing is the airframe itself, but that largely pig
768.
by jabl 4y ago
Looks more like a typical gray color that practically all Western air forces use today, than anti-flash white. I'd speculate the implications of this are: - They plan on operating it during the day as well as night, so they need better
769.
by jabl 4y ago
And, the package selection in RHEL is much smaller than in, say, Debian or Ubuntu [1]. There are the popular EPEL repositories with lots of extra packages, but these are community-maintained on a best-effort basis. [1] And I think the Ubunt
770.
by jabl 4y ago
> Which areoplane is winning the kilogram kilometers per Litre of jet fuel for long haul nowadays? Pretty sure it would be A350, or B787, or one of the latest gen updated B777's. Basically stick the latest generation biggest super h
771.
by jabl 4y ago
Actually the Australian study you quoted earlier showed that the difference in crash risk was largest during daylight hours, as in Australia many people drive with their lights off during daylight. But yes, I suspect if you were to redo tha
772.
by jabl 4y ago
> It could be that after living in your head all day, bright colors are just unpleasant. Doesn't have to be "living in your head", some people are just very easily distracted by bright colors, or visual chaos in general.
773.
by jabl 4y ago
> Grey/Silver color range is much easier to keep clean, and stays cooler in the sun. That's true, however there's also a surprisingly big drop in reflectance going from white (~85%) to even a light gray (~50%). Now these f
774.
by jabl 4y ago
Here's a PDF of what I presume is the same study by the same authors a few years before it was published in a journal: https://www.monash.edu/__data/assets/pdf_file/0007/216475/An...
775.
by jabl 4y ago
I think the effect is partially due to all modern (well, jet age) airliners looking more or less the same at a glance. You can tell the 747 is larger than a, say, A320, because it has four engines and the second floor. But just how much lar
776.
by jabl 4y ago
Because I have little desire to "express my personality" through my choice of car? I don't particularly like cars. I don't particularly enjoy driving a car. I hate traffic. Driving on a racetrack can be fun, I admit. But
777.
by jabl 4y ago
While it's true that military ships (and planes) are painted gray in order to camouflage against a background of haze and clouds, it's also true that there's a civilian demographic that have some kind of desire to appear as t
778.
by jabl 4y ago
Nikwax at least is flourine-free, but yes, AFAIU most waterrepellent sprays contain PFAS.
779.
by jabl 4y ago
Indeed. Over here every slightly larger supermarket has an aisle full with various Teflon cookware. Cast iron and stainless? Nowhere to be seen, you have to go to some specialty shop to find them. They last forever, so the market must be ti
780.
by jabl 4y ago
Same reason you're not supposed to extinguish an oil fire in your frying pan by splashing water on it.

More ›