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pirocks

832 karma · joined August 11, 2016

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pirocks··on Is Rust faster than C?
> Multithreading does not make code more efficient. It still takes the same amount of work and power (slightly more).

In addition to my sibling comments I would like to point out that multithreading quite often can save power. Typically the power consumption of an all core load is within 2x the power consumption of a single core load, while being many times faster assuming your task parallelizes well. This makes sense b/c a fully loaded cpu core still needs all the L3 cache mechanisms, all the DRAM controller mechanisms, etc to run at full speed. A fully idle system on the other hand can consume very little power if it idles well(which admittedly many cpus do not idle on low power).

Edit:

I would also add that if your system is running a single threaded database, and a single threaded web server, that still leaves over a hundred of underutilized cores on many modern server class cpus.

pirocks··on SK hynix dethrones Samsung as world’s top DRAM maker
My sibling comment has a lot of good info, but to answer your question for ddr5, SK Hynix makes the ram capable of the highest frequencies/best timings, Samsung is second and micron is third. At least this was true when ddr5 initially came out, these things could change. Its also worth mentioning that manufactures can have different grades/product lines so there is variation within a manufacturer to. My perception is that Micron and Samsung are cheaper than SK Hynix, though idk what wholesale prices actually look like.
pirocks··on World's largest wildlife crossing reaches critical milestone. Now what?
London underground deep level trains have no HVAC and most definitely have overheating tunnel problems.
pirocks··on E/acc as a religion:A Technologist's Right to Choose
I'm not seeing it explicitly stated in this post but there is an important detail that other comments seem to be ignoring/assuming. There's a difference between a class that requires students "to consider that the idea that relentless progress that steamrolls all other concerns might not be the right way to think about progress"(from one of my sibling comments), and a class that requires students to not believe in relentless progress. Like a class that assigns an essay with the prompt "explain why building more datacenters is bad" or a class that assigns "are more datacenters good" are two very different classes. My sibling comments seem to be assuming that the later is happening. I suspect the OP thinks the former is happening.
pirocks··on Teaching general problem-solving skills is not a substitute for teaching math [pdf] (2010)
> Many of these people claim to have a "system" which will enable them to win. I've talked with some of them. None of them I've spoken to had money. Coincidence?

The original thread was about how statistics education will not cause people of gambling. Of course people almost always lose money gambling, except for very rare exceptions, but that doesn't really have anything to do with my point that people spending meaningful amounts of money on gambling are addicted. Addicts aren't going to just tell you that they gamble, because they are addicted(maybe some will but not in general).

> Personally, I've gambled a few times. Lost money. I don't like losing money, it is not entertaining to me in the slightest.

Some people could probably say the same thing about video games, but nobody disputes that some people enjoy video games.

pirocks··on Teaching general problem-solving skills is not a substitute for teaching math [pdf] (2010)
> you'll see legions of people who do not understand statistics and pay a heavy price for that.

At the risk of stating the obvious, and not adding to the conversation, I think we all know that people putting their life savings into slot machines aren't doing so because they don't understand expected value. They may or may not understand that they are going to lose all their money, but they are gambling because they are addicted/have some kind of mental health problem. Knowledge of statistics doesn't really affect things for problem gambling.

As for those putting modest amounts of money into gambling, most of them will tell you that card games/etc. are fun, and are therefore worth it.

pirocks··on Borrow Checking, RC, GC, and the Eleven () Other Memory Safety Approaches
You may enjoy: https://docs.rs/static-rc/latest/static_rc/
pirocks··on Cities Skylines 2 runs with 20fps on an Nvidia RTX4090
They mean that it's a card people typically buy with the intention of playing games at 4k.
pirocks··on Orcas that hunted alongside humans might be extinct
Sure but the gp was asking if we killed them off directly as opposed to killing off there food source.
pirocks··on Thiel's Unicorn Success Is Awkward for Colleges
I've heard some variation of this many many times, and remain very unconvinced. General education in university isn't the norm around the world. Are non-americans all hyper-specialized people who know nothing else of the world? Are people who didn't go to university the same? Did someone do a study at some point and conclude that general ed was important or do these general ed requirements exist purely because they are tradition?
pirocks··on Shop Class 2.0: Rethinking High School to Accelerate Electrification
1 million electricians strikes me as a lot of electricians. Also it already is 2020. Typo perhaps? Source?
pirocks··on WebAssembly for the Java Geek
> A 256GB RAM stick uses 80W!!!!

This seems very high to me, since most high capacity server sticks have no heatsink. Have you got a source?

pirocks··on Test scores are not irrelevant
I have long wondered about this. Note that you also need to be able to normalize grades across students who went to the same school but had different teachers. I suspect the answer is that both normalizations are hard so admissions people don't bother.
pirocks··on BART’s excursion fare: Agency earns millions from passengers not riding trains
Tap/swipe in with one card, tap swipe out with the same card but don't actually leave. Hand the card to your buddy who swipes in and enters with you. Do the same thing on exit. You can then have as many people as you want travel for the cost of one.
pirocks··on Can computers be mathematicians?
I believe Lean handles proofs about cardinality and infinities just fine. I'm not sure what kind of computation you want to do with infinities that current computers can't? Can you elaborate? Like sure I can't represent any arbitrary real but like that's never a problem in practice. And Mathematica like software can get pretty close to representing any computable real.
pirocks··on Surveillance too cheap to meter
> By 2025 cyber-security will cost the world about $10.5 trillion per annum, and a significant amount of that

That's a lot of money. A quick google search points to this: https://cybersecurityventures.com/cybercrime-damages-6-trill... but I'm not sure that's the same as the claim. Source?

pirocks··on Facebook says Apple iOS privacy change will result in $10B revenue hit this year
Sorry to respond to such an old thread.

Of course pretty much all communication is advertising in some way, but the topic here is the corporate kind with teams of people trying to optimize click through rates and the like. I don't think they are really comparable and I don't think its particularly difficult to tell the difference in most cases.

pirocks··on Facebook says Apple iOS privacy change will result in $10B revenue hit this year
Lots of software I use on a daily basis has no marketing team and became dominant on its merits alone. I would rather all software competed on its merits.

As for you main point about advertising helping me find products I genuinely want/need, this couldn't be further from the truth in my experience. Recently I wanted a new laptop, and one of my criteria was that said laptop should not have pre-installed nonsense like mcafee/Norton(I mean I would be wiping the drive and installing Linux anyway but this is on principle). Anyway it turns out that all large laptop companies install some kind bloatware and also advertise aggressively, so it's quite difficult to search for a laptop without bloatware, since all the ads/seo are for laptops by companies with large advertising budgets and therefore have bloatware. More generally if I'm looking for a product I want there are generally multiple competing providers/manufacturers of said product, and I therefore must figure out which is better, and often there is a clear winner. However the other sides advertising team are incentivized to muddy the waters in this situation making it less obvious which products are best.

Also can you please not yell random words it's actually kind of jarring to read.

pirocks··on Google said it had successfully ‘slowed down’ European privacy rules
Sometimes I have a problem that could be solved with money. I google/whatever favorite search engine is for a product that solves the problem that I want to solve. At no point adtech is required, in fact I would prefer if adtech wasn't involved.
pirocks··on UK ISP Sky feeds realtime customer bandwidth data to litigous anti-piracy firm
No they mean people have a VPN for watching netflix content not available in their country.
pirocks··on Ask HN: Does anyone use keyboard/mouse extra buttons for coding?
My mouse has built in back/forward buttons, which I use extensively to go back and forth through files. Occasionally use middle click for paste.
pirocks··on Why are American workers becoming harder to find?
https://outline.com/A8YKRL
pirocks··on Why are American workers becoming harder to find?
> rewarding the lazy

This comes off as unnecessarily moralistic.

pirocks··on United Airlines will buy 15 planes from Boom Supersonic
I sincerely doubt the jet in question was flying at supersonic speeds right above tree tops. Couple of reasons, at low altitude most military jets can only handle mach 1.2 or so at the cost of massive fuel consumption. Any sort of long distance flight at low altitude, supersonic speeds would waste massive amounts of fuel. Additionally all aircraft are significantly less maneuverable at supersonic speeds which is a bad combination with being close to the ground. Lastly and probably most importantly sonic booms are really really loud. As in they can at least in theory kill people if in close contact(not aware of this actually happening at any point, but there was a cold war project to use a low flying supersonic aircraft as an anti-tank weapon). Point is if they actually where supersonic I would be surprised if you didn't have some form of hearing damage. Also shaking and rattling is not consistent with a sonic boom, just normal jet noise.
pirocks··on Replacements for existing software written in Rust
Pretty much ever safe language has unsafe features though, either by calling out to C or something like sun.misc.Unsafe in java.
pirocks··on Weary of Work
My understanding is that the UK experienced a population boom due to increased farming productivity due to potatoes. The resulting population boom meant that there where more farmers than farms, so they had to go somewhere, and the only option was cities.
pirocks··on Time flies in Google Earth’s biggest update in years
I believe this is actually a thing that Google implemented as part of a googling game. I don't have the link on me right now sorry.
pirocks··on Extracting the abstract syntax tree from GCC (2015)
My understanding is that for Intel cpus Intel compiler is substantially better than gcc.
pirocks··on Shrinking Income Inequality
Life expectancy is down in the US pre-covid, driven in part by the opioid epidemic and in part by poor health/obesity,both of which are associated with poverty. Involuntary servitude is alive and well in US prisons which incidentally don't have a ton of high income people.

So I don't think it's fair to say that life is necessarily getting better in the US for low income people.

pirocks··on Amazon driver quits over AI-powered safety cameras in delivery vehicles
My understanding is that this is a system which is recording the driver for review by human management at a later date. Which is very different from anything that would come pre-installed in a vehicle.
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