jleahy

15 ms·

121.
by jleahy 5y ago
History is surely one thing, but another key point is that these speeds are always KIAS (indicated air speed). This is a measurement that doesn’t correspond to either true ground speed or true air speed (but is far more useful for flying th
122.
by jleahy 5y ago
Same for xchm and xev.
123.
by jleahy 5y ago
Good point.
124.
by jleahy 5y ago
I normally run Linux without any swap partition and this still happens without swap. Realistically is this kind of oom condition (where oom killer fails to trigger) I just end up pulling the plug. I’ve never been able to track down the exac
125.
by jleahy 5y ago
Unfortunately that’s not how they behave at all. See some of the references posted by others in other comments. Intuition doesn’t really work at all here.
126.
by jleahy 5y ago
Tell that to Newton’s method, which can fail to converge for convex functions.
127.
by jleahy 5y ago
If you need one car, but probably not if you need tens or hundreds of thousands.
128.
by jleahy 5y ago
The punchline is that they didn’t think of: movzx rax, al mov al, [rax+rbx]
129.
by jleahy 5y ago
I would guess that such a project is at least one hundred years away, based on its difficulty and the progress we have made in the last one hundred years (assuming a similar rate of progress, and that is not a sure thing). It is hard to des
130.
by jleahy 5y ago
Surely cutting down fast growing trees and burying them in landfill is a great way to sequester co2?
131.
by jleahy 5y ago
It unfortunately makes all the hardware very messy, end around carry is not a pretty thing. You end up needing fiddly flagged prefix adders.
132.
by jleahy 5y ago
Well I’m in the UK and it’s also true here, I don’t know about Europe proper.
133.
by jleahy 5y ago
Tools support both, but the vast majority of companies are using (system) Verilog for design. VHDL shops do exist, but are rare.
134.
by jleahy 5y ago
Both are awful languages, but Verilog is an awful language with broad industry support.
135.
by jleahy 5y ago
Calculating the average value for some observation in a time bucket, where some buckets may have no observation (resulting in 0/0=nan), finally taking some kind of summary of these ignoring nan values (there is a whole library of funct
136.
by jleahy 5y ago
Probably just some tweaks to O2 would be enough, after all people are selecting Os over O2 because they see better performance, and that should not be happening.
137.
by jleahy 5y ago
Well I did want to say the P4, but I never actually had one so didn’t want to say something that turned out to be wrong. Certainly on earlier microarchitectures it did help a lot more than it does now, and there were some nice wins on the P
138.
by jleahy 5y ago
It’s a shame that Osize can sometimes produce truly awful code. There are a few optimisations in there that trade a byte for a massive slowdown.
139.
by jleahy 5y ago
Vectorisation is not a clear win, and so doesn’t belong in O2. Certainly it can deliver massive improvements in some cases (as loop unrolling could in Pentium III days), yet can cause significant binary size increases (think icache costs) a
140.
by jleahy 5y ago
If you really want to know how PCI Express works I would instead recommend these: http://xillybus.com/tutorials/pci-express-tlp-pcie-primer-tu... http://xillybus.com/tutorials/pci-express-tlp-pcie-
141.
by jleahy 5y ago
I think it’s often due to people using private IP addresses for intermediate nodes, to save on ipv4 addresses. mtr will keep going after hitting a blackhole in the middle.
142.
by jleahy 5y ago
Why not both?
143.
by jleahy 5y ago
Arch?
144.
by jleahy 5y ago
It’s just too much mass in too little space. It’s essentially the same requirement as fusion, but almost infinitely more difficult. If you could make a fusion reactor almost infinitely better then it would produce a black hole which would i
145.
by jleahy 5y ago
Just print to pdf and add pdftops (from poppler) to your pipeline.
146.
by jleahy 5y ago
The something is data dependencies.
147.
by jleahy 5y ago
The average Linux kernel developer is probably confident in 5-10 languages, and I can’t imagine they would really have trouble picking up Rust. That kind of argument might hold for the average junior javascript dev, but kernel developers ar
148.
by jleahy 5y ago
Well indeed, I was dramatizing 99% as all. But you know as well as I do that TFT (even CMOS) will never run at MHz due to the awful RC constants, so it's a bit moot.
149.
by jleahy 5y ago
It’s all static power, not dynamic power, so clock speed is irrelevant. Still it’s an NMOS technology rather than CMOS and that is going to mean big issues for power consumption (there is a reason why CMOS won).
150.
by jleahy 5y ago
Is that not the axiom of finite choice, which holds in ZF set theory without AC?

More ›