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thetallstick

Re:A 2030 Self-Driving Car Bet on Friday March 04, 2022 @05:03PM (#30561219)
Looks like we both misread it.

"By "major cities" we mean any of the top 10 most populous cities in the United States of America."

Phoenix is in that list.

Re:A 2030 Self-Driving Car Bet on Friday March 04, 2022 @04:32PM (#30560875)
My reading of the terms of the bet is major cities, which means more than one city with a population in excess of 250K. In my reading just Phoenix and Tucson would be sufficient.
Re:A 2030 Self-Driving Car Bet on Friday March 04, 2022 @03:53PM (#30560398)
I see. It's also an ISO standard too, which means it won't happen for sure before 2030... :)

https://www.sae.org/standards/content/j3016_202104

Re:A 2030 Self-Driving Car Bet on Friday March 04, 2022 @03:34PM (#30560156)
Is there an agreed upon definition of level 5? I mean what's "everywhere" and "all conditions". I can't drive everywhere and in all conditions for some definitions of everywhere and all conditions. Am I not level 5? :)
Re:A 2030 Self-Driving Car Bet on Friday March 04, 2022 @03:30PM (#30560096)
To be commercially available for passenger use in major cities at level 5, regulators have to also agree it's level 5. It's not just a technical problem.
Re:RISC-V is succeeding on Thursday March 03, 2022 @04:32PM (#30547302)
> with significantly higher code density.

This is not correct and is a known weakness of RISC-V at the moment. The ARM toolchains are really good and have decades of improvements in them. This is a big issue for those who need to buy ROM in volume.

Better tools are coming online though. For example:

https://blog.segger.com/code-size-closing-the-gap-between-ri...

"One of the issues faced by RISC-V developers is that the code density of the RISC-V instruction set for deeply embedded processors does not match that of Cortex-M with existing tools."

For those who don't get the Judith Miller reference.

https://en.wikipedia.org/wiki/Iraq_and_weapons_of_mass_destr...

"In the buildup to the 2003 war, the New York Times published a number of stories claiming to prove that Iraq possessed WMD. One story in particular, written by Judith Miller, helped persuade the American public that Iraq had WMD: in September 2002 she wrote about an intercepted shipment of aluminum tubes which the NYT said were to be used to develop nuclear material."

Re:RISC-V is succeeding on Tuesday March 01, 2022 @04:22PM (#30520188)
Shockingly this is not strictly the case anymore and it's become less true everyday.

https://info.efabless.com/press-release-efabless-launches-ch...

Re:RISC-V is succeeding on Tuesday March 01, 2022 @03:58PM (#30519919)
The code may have been written in C but many drivers are distributed in binary only form with headers. Unfortunately the binaries are often ARM only.
Re:RISC-V is succeeding on Tuesday March 01, 2022 @03:42PM (#30519713)
I think to really have the conversation we would have to define the terms. Much of the original CAD tooling was open source because it was written at Universities.

Things like: is it enough for one to make any core or does one have to make the "best" core? If it just has to exist that was pretty much always possible. Definitely not the lowest friction way to go. But possible.

For example here is basic MIPS core originally written in 2003, from chapter 1 of a common VLSI textbook: http://pages.hmc.edu/harris/cmosvlsi/4e/code.html

It's just over 400 lines of verilog and super easy to follow. The tooling changes that happened in the 90s made that possible.

I experimented making cores that were taped-out in my University, as an undergraduate, in the late 90s. It didn't cost my University even close to 9 figures. It was definitely a lot harder than now but the designs were also a lot more modest. Things, essentially untrained, students can do now would've been unthinkable then.

Re:RISC-V is succeeding on Tuesday March 01, 2022 @03:13PM (#30519356)
That's part of the reason ARM will be very hard to displace. Just like there is a ton of x86 code out there in the server world that's not going anywhere. There is a ton of ARM code (especially peripheral driver code) out there in the uC world. And much, probably most, of it is not open source and not actively maintained.

The good news is compute and memory are getting so cheap it's probably not long until RISCV cores just emulate ARM and solve the problem, all inside a greeting card at a profit...

Re:RISC-V is succeeding on Tuesday March 01, 2022 @03:07PM (#30519294)
This is because the underlying CAD tooling has gotten much smarter and easier to use. It's not because of anything RISCV did in particular.

This toolchain enables going from knowing nothing to a core in one class. One doesn't even need to enroll in the class to follow along.

See: https://ocw.mit.edu/courses/electrical-engineering-and-compu...

Re:RISC-V is succeeding on Tuesday March 01, 2022 @02:57PM (#30519169)
Nothing in life is ever simple...

> With ARM, You have to pay ARM for ISA license

This is only true for some definitions of ARM. See for example:

https://en.wikipedia.org/wiki/Amber_(processor) "The Amber core is fully compatible with the ARMv2a instruction set and is thus supported by the GNU toolchain. This older version of the ARM instruction set is supported because it is not covered by patents, and so can be implemented with no license from ARM Holdings"

> Frankly, unless ARM does radically change their business model, I do not expect them to survive.

Looks like someone is having similar thoughts inside ARM. https://hackaday.com/2018/10/02/free-arm-cores-for-xilinx-fp...

There are other efforts too.

Re:Caltech's CS interview prep course on Sunday February 27, 2022 @08:22PM (#30494993)
They do. Google “VLSI interview prep”
I was thinking the same thing. It’s not like I’m being asked to direct troops or something.

Instead of watching/reading news for hours. Take 30 min to donate some money and email your representative in Congress on your beliefs. You’ll have done way more to help your cause than watching news and you get your day back.

Re:Ask HN: The book that did it for you in math and/or CS? on Sunday February 27, 2022 @03:01AM (#30486324)
Apostol Calculus Vol 1

The introduction gives a history lesson, a great description of the method of exhaustion with descriptive drawings, and some very straightforward proofs on finding the area under the curve for parabolic segments via some basic infinite sums (no limits), all in 10 pages in a conversational style. And it just gets better from there.

My dad gave me his book he used in the 70s and I read it in high school in parallel to the textbook the school issued. Everyone thought I was some genius because I thought calculus was so obvious and I could explain it so well but I was just parroting the text and proofs from this book, basically verbatum. I told the other kids to use it as well but no one did.

Re:95%-ile isn't that good (2020) on Sunday February 20, 2022 @11:21PM (#30411951)
And if you’re in the top, say 1/3, of engineers you’ll make a good living. If you’re in the top 1% of say, chess players, you probably won’t even get tournament invites.
It’s not in the linked article but there’s significant more information from the source:

https://googleprojectzero.blogspot.com/2022/02/a-walk-throug...

Re:Internals of Go's new fuzzing system on Friday February 18, 2022 @03:20PM (#30390546)
If i==j==k then they’re not disjoint.
It's also my favorite background noise while working. The only problem is I keep getting distracted as I see new things.

It's funny how much more character development shows had back then. For example Columbo talking to a parking attendant about something random that has absolutely nothing to do with the case. Or scenes of people walking down hallways, not saying anything, just strolling. I like the slow pace so much more than today's TV.

Re:No one cared about my spreadsheets on Wednesday February 16, 2022 @08:50PM (#30368611)
Actually, I think this is a decent thought experiment. IMHO it would depend a lot of what is included and not included and what definition of profitability we used.

For example, if I spent less money would that also count as more profitable? Does it also take into consider what activity was replaced by running?

Spending 30 min less on HN and replacing it with running, or just moderate walking, could very well result in less expenses if one takes medical spending into consideration.

And I think that's what Caplan is asking people to do. Go over his definitions and what was included and see if it makes sense.

Re:No one cared about my spreadsheets on Wednesday February 16, 2022 @07:35PM (#30367977)
> If the speculative estimates that went into Caplan's spreadsheets were essentially made up

When Caplan released the spreadsheet and asked people to "check his math" I am pretty sure what he was really asking was for people to test that exact conditional.

>> And don't forget that allied troops in Europe were rebelling (even turning their arms against their officers) at the prospect of being shipped to the pacific theatre. > I've never heard of this- was this really a widespread occurrence?

I also never heard of widespread armed rebellion but definitely there was a lot of animosity over who got to go home, who got to stay, and who had to go to the Pacific. I would not have wanted that job.

https://www.nationalww2museum.org/war/articles/points-system...

Maybe they weren't going to help invade mainland Japan straight away but there were still plenty of Japanese troops in China that needed to be dealt with.

https://en.wikipedia.org/wiki/Second_Sino-Japanese_War

Re:I love you, Hacker News, but you’re toxic on Tuesday February 15, 2022 @12:49PM (#30349998)
Exactly.

It's entirely possible that it's correct depending on the specifics. Say for example one is trying to install MySQL 8.0 on a laptop with Catalina, which is still supported by Apple and getting security updates. This is actually unsupported and won't work. A somewhat unlikely situation but definitely not impossible.

https://www.mysql.com/support/supportedplatforms/database.ht...

What I mean by "everyone says that" is that I often read that big tech should be regulated but I don't know what specific end they are trying to achieve.

Tech (big and small) is regulated today and there are rules on the books which protect at least some of the individual privacy points you highlighted. [1] You, and many others, have stated that you find those rules insufficient and would like new/different rules in place.

Can you provide specific goals that address the issues that you think exist, and that law makers could use to draft new policy?

[1] https://www.rocketlawyer.com/business-and-contracts/business... and https://www.rocketlawyer.com/business-and-contracts/business...

Re:A Big Week for RISC-V on Sunday February 13, 2022 @03:35PM (#30325386)
You can find more information here:

https://news.ycombinator.com/item?id=25801500

According to some studies, social media is worse:

https://m.economictimes.com/tech/internet/social-media-more-...

> I strongly support regulation of big tech

Everyone says that but what specifically are you looking for? What’s the social media equivalent to no smoking indoors?

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