cpgxiii

17 ms·

181.
by cpgxiii 3y ago
OpenMP and GCD are very different in some ways, yet very similar in others. Both provide threadpool-based parallelism, and both provided "managed" parallelism well before C and C++ gained standardized parallelism via std::async&#x
182.
by cpgxiii 3y ago
When Apple initially moved to clang instead of GCC, clang did not support OpenMP. Apple chose vendor lock-in with Grand Central Dispatch (in the same way they would chose vendor lock-in with Metal years later) rather than invest the time in
183.
by cpgxiii 3y ago
Considering how much of a pain journal editors are to deal with already in terms of text formatting, the absolute last thing needed is trying to turn them into code reviewers/meta reviewers. The pool of editors who are both competent i
184.
by cpgxiii 3y ago
The problem with a lot of drone regulation enacted and proposed so far in the US is that it effectively enables drone-using companies at the cost of other airspace users. To me it seems like the overall solutions have been pretty obvious -
185.
by cpgxiii 3y ago
> The FPGA on the other hand has the output ready one clock cycle after the inputs stream in, and can have many such operations in parallel. One might ask, why are cpus not being replaced by FPGAs? You need to be careful with interpretin
186.
by cpgxiii 4y ago
> Hence why "efficiencies" is just an excuse. No. There is no reason to believe that the efficiency can be significantly improved. If the efficiency of clean hydrogen is bad enough and will always be that bad, it's very po
187.
by cpgxiii 4y ago
Lots of money has been spent on this front already, and it has gone nowhere . There is no magic way to suddenly make hydrogen a nicely-behaved, high-density storable fuel. Military and space applications, who are willing to work with much
188.
by cpgxiii 4y ago
They aren't poor excuses. There are fundamentally hard problems about the distribution of clean hydrogen that have not and likely will not be overcome in a way that is broadly competitive with other technologies. Sure, you can use me
189.
by cpgxiii 4y ago
> The issue is that most of the joint programs fail because they start with such a broad difference in requirements the program can't work. Agreeing on requirements is the most important compromise. You can always come up with diffe
190.
by cpgxiii 4y ago
I think the Sea Apache design was doomed to failure, potentially deliberately, by including so many modifications to the base design. A reasonably scoped modification for the USMC would have been the standard increased corrosion resistance,
191.
by cpgxiii 4y ago
The engines certainly gave the USN the out it wanted, but the thing that truly killed the F-111B was the need for a dogfight-capable fleet fighter. There was no way they could have afforded two separate fighter development programs at the t
192.
by cpgxiii 4y ago
My point is that multi-service aircraft are entirely possible, and have been all along. That several notable aircraft emerged as multi-service aircraft is all the more evidence that a multi-service aircraft (really, a family of tightly re
193.
by cpgxiii 4y ago
I'd say the F-111 is a particularly odd case, given the vastly different initial requirements involved. To be clear, everything that made the F-111 a great long-range interdictor for the USAF would have have also made for a great long-
194.
by cpgxiii 4y ago
This whole "multi-service aircraft can't work" meme has been going for essentially a century, and has been wrong just as long. The F-4 Phantom, probably deserving the title of greatest Western multi-role aircraft of the cold
195.
by cpgxiii 4y ago
In many parts of the US, the most accessible (i.e. not as expensive) private schools are Catholic schools, dating back to a boom of Catholic immigrants who felt (and were sometimes right) that existing schools (public and private) were anti
196.
by cpgxiii 4y ago
Many US colleges/universities maintain a particular kind of legal bubble, where the surrounding city/state law enforcement largely leaves college police/security to their own devices to create an environment in which students
197.
by cpgxiii 4y ago
And, humorously, there were months of clamor for increased rates and months of warning from the US government before Russia invaded Ukraine. Bank risk managers can't pretend there wasn't lots of warning for both developments, star
198.
by cpgxiii 4y ago
The problem is accurately perceiving the remaining snow/ice coverage on the airplane, unless you have a guaranteed-clear-on-first-pass solution (you don't). Sure, you can get it "mostly" clear with current CV, but you ha
199.
by cpgxiii 4y ago
Some people's planet is graphics-only, and for them AMD is a great choice. AMD is pretty great on Linux so long as you only ever want graphics. Once you want anything else out of their very-good-on-paper hardware, the experience starts
200.
by cpgxiii 4y ago
Canon rounds aren't great for balloon targets. It's quite likely that a balloon doesn't offer enough resistance to trigger the fuzes, which leaves you with a bunch of live rounds falling ~40k feet and hitting whatever is belo
201.
by cpgxiii 4y ago
You're reaching too far. Munitions are expensive, stockpiles are finite, and the US government does not like to (and cannot quickly) increase the rate of production from the low peacetime rate. If using munitions translated immediately
202.
by cpgxiii 4y ago
Pretty much every BMD product is FPGA based, either with a conventional FPGA or a hybrid like Zynq (ARM cores + FPGA). It clearly gives them a lot of design commonality in hardware and flexibility in behavior. It's a good example that
203.
by cpgxiii 4y ago
D3D is the exception to basically everything in graphics-land, avoiding the pitfalls that basically every other cross-hardware-vendor API suffers. The problem, obviously, is that it is Windows-only. It's only popular in cases where the
204.
by cpgxiii 4y ago
I think you could draw somewhat different lessons from this, though: - Cell failed because it required too much work and was too incompatible with any other platform (save for DSPs). - Larrabee failed because KNC wasn't binary compatib
205.
by cpgxiii 4y ago
During the Cuban missile crisis, the US was very close to commencing air strikes and an amphibious assault on Cuba to remove the missiles by force. US planners we unaware of the short-range tactical nuclear weapons available in Cuba, or tha
206.
by cpgxiii 4y ago
We're not as close as we've ever been. The Cuban missile crisis was much closer, and worse, was much closer than either the US or USSR knew at the time. The current situation is very serious, but fundamentally both sides are awa
207.
by cpgxiii 4y ago
To anyone familiar with the field of military history, the article should come as no surprise. Victor Davis Hanson has an axe to grind with anything vaguely "left" of his own reactionary politics, and frankly embodies some of the
208.
by cpgxiii 4y ago
In many ways we've seen that return to dumber hardware + smarter compilers in the GPGPU realm, although even there the hardware continues to get more capable over time. Those applications tend to work, though, on the basis that either
209.
by cpgxiii 4y ago
You can't claim to be in the "bodily autonomy" camp and believe in compelling actual living people to use their bodies to carry a fetus to term.
210.
by cpgxiii 4y ago
Those drills do exist, and they have been used in a number of mine rescue attempts. They take days/weeks/months to reach the desired depth and size of hole, depending on the type and stability of the rock being drilled through. Th

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