Hacker News: pclmulqdq

New comment by pclmulqdq in "The Mysterious Syndrome Destroying Endurance Athletes"

pclmulqdq — Mon, 17 Aug 2026 13:59:05 +0000

Note that in the only reasonably-close-to-contemporary story of the run, the marathon run itself came at the end of a multi-day run from Marathon to Sparta and back, about a 300 mile round trip. The marathon run was just the last 26.2.

New comment by pclmulqdq in "RISC-V: They Should Have Known Better"

pclmulqdq — Sun, 16 Aug 2026 00:46:59 +0000

By volume, I would expect the majority of microcontroller silicon shipped to be these kinds of deeply embedded cores. They even show up in chips called “microcontrollers.”

New comment by pclmulqdq in "Can Intel finally beat ARM on performance per Watt?"

pclmulqdq — Mon, 10 Aug 2026 01:55:53 +0000

Quite a lot of web rendering is done with non-integer JS Number types, aka FP64. You are right that there’s a 31-bit integer optimization, but once you have a non-integer in the mix, it’s FP64. Many GUIs some time ago would use FP32, but in 2026 there’s a lot more FP64 out there than you give credit for.

New comment by pclmulqdq in "Analyzing data from Silicon Valley ventures and founders prosecuted for fraud"

pclmulqdq — Sun, 09 Aug 2026 20:26:51 +0000

Supposedly B2B SaaS companies in YC have been known to enter into agreements to “buy” each others’ products so they can all book more users and revenue despite a single dollar not changing hands.

New comment by pclmulqdq in "Can Intel finally beat ARM on performance per Watt?"

pclmulqdq — Sun, 09 Aug 2026 14:00:55 +0000

AI is not the only thing in the world. The rendering of this webpage involves a lot of FP64 work.

New comment by pclmulqdq in "Can Intel finally beat ARM on performance per Watt?"

pclmulqdq — Sun, 09 Aug 2026 03:20:17 +0000

Literally every workload not named above. It’s the default for a non-integer number.

* Web rendering and almost all web apps (see the JS number type)

* Most things in a game not done on the GPU

* Audio processing

* Most GUI processing/rendering

* Every miscellaneous/scalar calculation these days

Believe it or not, on a CPU this adds up to a lot more than the work you get doing AI processing.

New comment by pclmulqdq in "Can Intel finally beat ARM on performance per Watt?"

pclmulqdq — Sun, 09 Aug 2026 00:52:39 +0000

What? Pretty much every general-purpose calculation on your computer that isn’t an integer is done with FP64. AI may not use it and games may prefer FP32 for many things, but your CPU certainly does a ton of FP64 work.

New comment by pclmulqdq in "US Military's cyber command unit grapples with cluster of deaths by suicide"

pclmulqdq — Sun, 09 Aug 2026 00:14:01 +0000

At least one of those American citizens was the intended target of a drone strike.

New comment by pclmulqdq in "SpaceX Starship Flight 13 livestream [video]"

pclmulqdq — Sat, 25 Jul 2026 00:07:05 +0000

I am pretty unconvinced that any of the past explosions of starship used that feature. It’s very convenient to have an “explode” button so you can say all of your rocket detonations were intentional, but they are often leaking fuel or dropping chunks before they explode.

This was a great flight, though.

New comment by pclmulqdq in "What I learned selling 2,500 MIDI recorders: Hardware is not so hard"

pclmulqdq — Sun, 19 Jul 2026 23:38:30 +0000

It does still need CE certification and emissions testing. I’m guessing they didn’t do that and it will be fine because they only sold 2,500 units.

New comment by pclmulqdq in "NYC may require landlords and realtors to disclose the use of AI in listings"

pclmulqdq — Sun, 19 Jul 2026 02:10:47 +0000

There is square footage on many NYC listings, but it’s wrong. They often have the square footage of the total area occupied by the apartment, including all the interior walls and columns that can take 20% of the area away.

New comment by pclmulqdq in "Kimi K3, and what we can still learn from the pelican benchmark"

pclmulqdq — Fri, 17 Jul 2026 22:13:29 +0000

It is. All over the Arab world, imagery in ads is “backwards” and I believe several companies will flip their ads horizontally, and UI localization involves flipping graphics.

New comment by pclmulqdq in "Since Chromium 148, Math.tanh is now fingerprintable to link underlying OS"

pclmulqdq — Sun, 12 Jul 2026 23:09:28 +0000

I go to the conference frequently and know the organizing committee. It depends on the year (2025 and 2026 did it, but not 2024). And if someone decides to register arith20xx.org, I doubt the conference would buy it.

New comment by pclmulqdq in "SpaceX wants to launch 100k more Starlink satellites for 100x the bandwidth"

pclmulqdq — Sat, 11 Jul 2026 01:14:59 +0000

Starlink was an attempt to grab the rural broadband funding that supported that fiber rollout in the US. It was too slow, so the money went to fiber and traditional ISPs instead. Fiber may well have come faster without starlink.

New comment by pclmulqdq in "Cursed circuits #5: capacitance multiplier"

pclmulqdq — Sun, 05 Jul 2026 23:11:16 +0000

Wait until he hears about negative Miller capacitance.

New comment by pclmulqdq in "[dead]"

pclmulqdq — Sun, 05 Jul 2026 11:18:26 +0000

This page reads like someone had ChatGPT write an article about the economy being K-shaped and then had ChatGPT summarize it as bullet points. Somehow that feels more offensive than just a bad article.

New comment by pclmulqdq in "Reality has a surprising amount of detail (2017)"

pclmulqdq — Fri, 03 Jul 2026 16:59:55 +0000

Yeah, that is correct. Sawmills often produce only one or two grades of wood and don’t do aggressive binning. That’s why the quality is so variable within the grade. There are also factors that affect the grade but don’t necessarily impact every application (eg warping and knots are sometimes ok), so the bins are coarse-grained.

New comment by pclmulqdq in "Please stop the AI confidence theater"

pclmulqdq — Fri, 03 Jul 2026 14:04:15 +0000

The threat of breaking all encryption has been a slow-burning $1 trillion or more grift for the field over the last 20-30 years. Not that anything has materialized from it. I am somewhat convinced that PQC is primarily being rolled out so that we can all stop funding those clowns (and because lattice-based cryptography is finally ready for prime time).

New comment by pclmulqdq in "Reality has a surprising amount of detail (2017)"

pclmulqdq — Fri, 03 Jul 2026 09:04:28 +0000

They aren’t “knowingly selling you poor quality” as some sort of scam. They are selling you wood to the spec you asked for. If you want higher-grade wood, you either have to spend money getting lumber graded to a higher spec or spend the time going through piles of low-spec boards to find the good ones. Many engineered wood structures are designed to use “poor-quality” wood, and they prefer it because it’s cheaper than using less high-grade wood.

New comment by pclmulqdq in "The fall of the theorem economy"

pclmulqdq — Thu, 02 Jul 2026 20:26:38 +0000

The ones that use an OS generally use seL4 these days.