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barchar

140 karma · joined March 12, 2014

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barchar··on Did California's fast food minimum wage reduce employment?
Also, you only really need to cover any increased taxes, everything else you pay them is someone else's income (fast food workers probably spend almost all their income). So your getting a big income increase to people very likely to spend it, this creating more employment.

Maybe here this will be offset by decreases in welfare program usage and the very, very high effective marginal tax rates that creates.

barchar··on Ask HN: Is traditional startup hiring advice outdated?
It's always been wrong unless you think spending $50k or whatever to exercise and having the shares go to zero means the options had a value of $0. If you think that you're a moron.

Obviously you aren't diversified and don't have preferred shares like investors but otoh you receive a salary.

Some startups will issue almost worthless amounts of options then sell em to you based on the hypothetical future (usually not discounted) value assuming a successful exit. This is shitty. Don't work for them.

I think if you are a new graduate with minimal or negative net worth then going to big tech makes sense, but as more and more of your wealth accumulation comes from investment gains vs income you may find you have achieved the "safety" you were chasing and the stability has become insuring yourself against an outcome you don't care about in exchange for knowing you'll be the richest guy in the graveyard.

barchar··on The hype is the product
Some of these investments come back around in terms of savings. Taxes and velocity of money (thus numbers of opportunities to be taxed) have been trending down.

Anyway, it's sorta always been this way. That AI is very much self-hyping might make this time worse, but otoh non-european economies have more ability now to make sure the fallout is mostly confined to the investors.

barchar··on Linux 6.16: faster file systems, improved confidential memory, more Rust support
On modern Intel systems sleep works the same as on android. You don't just ask the chipset for s3 anymore.

I wouldn't be surprised if one core stayed awake.

This is why tiger lake laptops had crummy battery life on Linux upon release (often on windows too). Without working s0ix they just never suspend, and old style s3 isn't really officially supported.

barchar··on Linux 6.16: faster file systems, improved confidential memory, more Rust support
It probably requires active standby/s0ix. Modern Intel chips actually don't officially support s3 at all anymore, only s0ix.

The whole point is to support stuff like this

barchar··on Intel CEO Letter to Employees
It can be rational for big companies to act like this because their existing assets are not protected from creditors.

A small startup can just go bankrupt if it fails, but in a big company (like Intel) there can be more collateral damage

barchar··on Intel CEO Letter to Employees
Tbh APX is a big and welcome addition. Much more useful than yet more vector instructions
barchar··on Intel CEO Letter to Employees
I mean they also have a large number of people producing investment goods vs doing operations. If you cut the former it's gunna take quite a few years to see the effect.

Twitter was never an attractive business and isn't one now, unless the goal is to have control over the hype cycle.

barchar··on Intel CEO Letter to Employees
Plus there's some reality bending that can go on. Everyone piling capital into something can sometimes make it happen, even if "it" is dumb.
barchar··on When is tech not hype? Tulips, toilets, trains and tabs
The good times can even cause businesses to slowly inch towards near-failure as they lever up more and more to compete!
barchar··on Young graduates are facing an employment crisis
Maybe it'll become a crisis as they (or their estates) all go to sell the homes at once :).
barchar··on Young graduates are facing an employment crisis
Seems like it isn't. The last few years have been really good for the bottom of the income/wealth distribution.

Tbh with the federal deficit at 6-7% of GDP I think it'll be somewhat hard to produce a recession. Eventually companies will figure out the shoe isn't going to drop and start hiring again.

barchar··on Young graduates are facing an employment crisis
Yep, market for lemons, sadly
barchar··on Young graduates are facing an employment crisis
The minimum wage isn't the problem, it's wage stickiness generally. Also, unemployment predates minimum wage laws.

But wave stickiness is sorta just part of human nature.

barchar··on Young graduates are facing an employment crisis
Only half true. You can, actually, decide to channel increased productivity into involuntary unemployment and it seems that to some extent we do just that.

Productivity and growth aren't zero-sum, but money definitely is. All the assets and liabilities in the economy sum to zero, so if you want to add new jobs you need to either deflate the economy or increase someone's debt level.

barchar··on Seagate gets its long-awaited HAMR tech into $600 30TB HDDs you can buy
No, not really. Definitely not on the level SMR drives do
barchar··on Seagate gets its long-awaited HAMR tech into $600 30TB HDDs you can buy
Toshiba at least is at 24TB with their MAMR drives.
barchar··on Converting a large mathematical software package written in C++ to C++20 modules
In addition to what everyone else has said it also makes it difficult to allocate the type on the stack. Even if you do allow it you'll at least need a probe.
barchar··on Converting a large mathematical software package written in C++ to C++20 modules
Fwiw doing a unity build with thin-lto can yield lovely results. That way you still get parallel _and_ incremental codegen.
barchar··on Converting a large mathematical software package written in C++ to C++20 modules
So, clang's modules are quite similar to clangs precompiled headers, especially the "chained" pchs. With PCH you have to wait on the serial PCH compilation step before you can get any parallelism, with modules you can compile each part of the "PCH" in parallel and anything using some subset of your dependencies can get started without waiting on things it doesn't use.

Header units are basically chained PCHs. Sadly they are hard to build correctly at the moment.

barchar··on Converting a large mathematical software package written in C++ to C++20 modules
A few points

1) modules only really help address time spent parsing stuff, not time spent doing codegen. Actually they can negatively impact codegen performance because they can make more definitions available for inlining/global opts, even in non-lto builds. For this reason it's likely best to compare using thin-lto in both cases.

2) when your dependencies aren't yet modularized you tend to get pretty big global module fragments, inflating both the size of your BMIs and the parsing time. Header units are supposed to partially address this but right now they are not supported in any build systems properly (except perhaps msbuild?). Also clang is pretty bad at pruning the global module fragment of unused data, which makes this worse again.

barchar··on Why is the Rust compiler so slow?
Rust does do this. The unit of compilation is the whole crate and the compiler creates appropriately sized chunks of LLVM IR to balance duplicate work and incrementality.

Rust is generally faster to compile on a per-sourceline basis than c++. But rust projects compile all their dependencies as well.

barchar··on FICO to incorporate buy-now-pay-later loans into credit scores
Beats the pants off a payday loan.
barchar··on FICO to incorporate buy-now-pay-later loans into credit scores
Eagh, real estate depreciates too, just more slowly. Imo the actual difference is that (many) cars are a very expensive way to meet your transportation needs compared to alternatives.
barchar··on FICO to incorporate buy-now-pay-later loans into credit scores
It has a lot to do with the structure of economies. Usually they're big exporters with fairly stable currencies. The differences in savings rates are super huge, even within cultural groups.

Demographics also play a role as does inequality.

barchar··on FICO to incorporate buy-now-pay-later loans into credit scores
There is a ceiling on how much you can spend on these things. Generally it is not fun to get drunk or high that frequently, and in the limit you die.
barchar··on FICO to incorporate buy-now-pay-later loans into credit scores
Everyone can't be 50% more frugal than everyone else, but it's possible for "everyone else" to be something other than 3-4% (the current US savings rate).

The money to sustain a high savings rate without a collapse in wages/demand ultimately comes from the government deficit, or deflation I suppose. This can be sustained even without productive real investment, if people just want savings the money will just sit around or repay debt without bidding anything up in the economy.

> landlord who sees that you have more money, and charges you more money.

You were getting a good deal then. Can happen with "affordable" housing I suppose.

barchar··on FICO to incorporate buy-now-pay-later loans into credit scores
You need money to cover your expenses. Forgoing the rest of your salary is a very, very cheap form of leverage.

For the risk to make sense you probably do already need enough, though.

barchar··on Waymo rides cost more than Uber or Lyft and people are paying anyway
I bet they will try and expand service area over expanding inventory. It's very expensive to keep cars in reserve for peak times, Uber gets around this by offloading the cost onto their drivers, but waymo will need to be able to pull cars from nearby areas.
barchar··on TradeExpert, a trading framework that employs Mixture of Expert LLMs
HFTs chase two sided order flow, not valuations that are "correct" in the long term. They generally don't add information to the market.

Quantitative traders do add information.

HFTs probably don't like trading with people that are adding information, that's why order flow from retail traders is valuable.

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