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JimmyAustin

1,110 karma · joined December 10, 2012

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JimmyAustin··on Problems with AWS Amplify and its use of DynamoDB
The equivalent in a relational database would be writing a query without a where statement, and then implementing the where in application code. AWS has a lot of unimpressive bits, but DynamoDB is not one of them, you just have to know how to use it properly (like any database!), and design your schema for the database (which isn't always easy). In general, using scan means you aren't using Dynamo correctly.

Caveat: I used to work at Amazon (not in AWS), but don't anymore.

JimmyAustin··on John Carmack’s AGI startup raises $20M from Sequoia, Nat Friedman, and others
For those who think this is contemporary, this is from august 19th, 2022.
JimmyAustin··on ChatGPT invented a sexual harassment scandal and named a real prof as accused
It gives you the following warning in a large prompt in the middle of the screen that you must actively dismiss before you can use the product.

"While we have safeguards in place, the system may occasionally generate incorrect or misleading information and produce offensive or biased content. It is not intended to give advice."

If that isn't being clear, I don't know what would be.

JimmyAustin··on TSA confirms plans to mandate mug shots for domestic air travel
Given that it’s hard to hijack a train and put it on a course for Cuba, I don’t think train hijackings are a real threat.
JimmyAustin··on For every 10% increase in the housing stock, rents decrease 1%
Those low margin businesses stay low margin, but with higher prices to reflect their higher costs. I don't know of any city in the world that doesn't have a hairdresser, even if it's expensive (and in that case it's proportionate to the rent).
JimmyAustin··on Stanford Alpaca, and the acceleration of on-device LLM development
You can actually use AI to validate some of these answers! For questions involving math, it’s easy to get the LLM to write a problem to solve the problem, then use that to double check the result. For example, with the following prompt to ChatGPT: ‘’’ Can a program that solves the following problem accurately be written, and if so, write it in Python:

{“Problem”: “Perform the following arithmetic operation." "input": "(5+7)3”} ‘’’ I got the answer: ‘’’ Yes, a program can be written to perform the arithmetic operation given in the input. Here is a Python implementation:

input_str = "(5+7)3" # input string result = eval(input_str) # using eval function to evaluate the expression print(result) # output: 36 The eval() function in Python evaluates the expression given as a string and returns the result. In this case, the input string "(5+7)*3" is evaluated to 36. The program then prints the result using the print() function. ’’’

JimmyAustin··on Ask HN: Why Is Credit Card Used as an Anti-Fraud Tool?
This doesn't really track for credit scores in particular, thanks to debit cards, but the overall idea of "checking if able to establish a relationship with a financial institution and all the KYC that comes with it" is a good one.
JimmyAustin··on Testing Microsoft's Windows Dev Kit 2023
AWS has them: https://aws.amazon.com/ec2/graviton/, and you can run Lambdas with ARM.

Disclaimer: I work for Amazon (not in AWS).

JimmyAustin··on PS5 Refresh: Oberon Plus
EU prices include VAT, US prices do not include sales tax.
JimmyAustin··on Run Stable Diffusion on Your M1 Mac’s GPU
I suspect that the M2 air is thrashing the disk pretty aggressively. Diffusion models rerun the same model once per step, so for a generation with 50 steps, you copy the entire model in and out of memory 50 times. That's going to kill performance.
JimmyAustin··on OpenAI API pricing update FAQ
Given that Dall-E 2's pricing hasn't changed, probably not.
JimmyAustin··on Why is Snowflake so expensive
It's pretty easy to limit the number of results returned by each partition to by limited to 10, then have that further reduced to 10 total during the reduce step.
JimmyAustin··on Apple has a bug in its disk I/O throttling code that affects raw disk copies
Depending on your workload, the Mac Studio would be the replacement for a 3900X box. It's not a GPU powerhouse, and lacks expandability though.
JimmyAustin··on Melbourne hit-and-run blamed on Tesla Autopilot, could set legal precedent
Autopilot operates on normal roads. It’s essentially lane following and dynamic cruise control.
JimmyAustin··on $30k employee referral program
15k * 12 = 180k post-tax, so ~250k gross. Making that as an engineer is not particularly common, but it's definitely not unheard of.
JimmyAustin··on The Unreasonable Math of Type 1 Diabetes
I'm not diabetic, but I tried a FreeStyle Libre 2 continuous glucose monitor to measure my blood sugar, and I think it's basically what you are asking for. Tap your phone on a patch on your arm to get a instant view of your blood sugar, plus see the previous 8 hours. It is pricey though.
JimmyAustin··on Facebook staff now to be known as “Metamates”
Chaos Monkeys (and the section extracted by Vanity Fair here: https://www.vanityfair.com/news/2016/06/how-mark-zuckerberg-...) is probably a more relevant comparison.

"Facebook is full of true believers who really, really, really are not doing it for the money, and really, really will not stop until every man, woman, and child on earth is staring into a blue-bannered window with a Facebook logo. Which, if you think about it, is much scarier than simple greed. The greedy man can always be bought at some price, and his behavior is predictable. But the true zealot? He can’t be had at any price, and there’s no telling what his mad visions will have him and his followers do."

JimmyAustin··on How long does it take ordinary people to get good at chess?
I’d assume most of that could be attributed to the average 11 year old being significantly smarter than the average 5, but I wonder how sustainable that gain is? Given a large enough cohort that practiced enough, ELO is probably a decent-ish proxy for mental development.
JimmyAustin··on We created a fake language to root out resume liars
A mate of mine's consulting company offers a 10% discount on any work if the client buys them a plant, any plant, for the office. Apparently they've only had two clients take them up on the offer.
JimmyAustin··on iPhone 12 and iPhone 12 Pro
I own the base station, which is pretty close to what you are describing. Apparently the base station pro is different.
JimmyAustin··on The cost of 1GB of mobile data in 228 countries (Feb 2020)
I cant answer your questions on net neutrality, but I do have fond memories as a teenager of waiting 24 hours after a WoW patch came out to grab it from unmetered from GameArena to save my parent's 13gb download cap.
JimmyAustin··on About the Rosetta Translation Environment
My understanding is that that line only refers to VM applications written and compiled for x86, and doesn't stop a VirtualBox (or any other VM provider) from compiling an ARM binary that doesn't require Rosetta.

I don't think this is a policy restriction so much as there not being support for Intel virtualisation technologies that that might rely on.

JimmyAustin··on Ask HN: Am I the longest-serving programmer – 57 years and counting?
According to Wikipedia, Grace Hopper started her computing career in 1944 when she worked on the Harvard Mark 1, which would have put her at ~38 when she began. Assuming she worked until her death, that puts her career in computing at a (incredibly impressive) 47 years.
JimmyAustin··on Netflix to cut streaming quality in Europe for 30 days
My parents connection in Australia is 100/3.
JimmyAustin··on CS246: Mining Massive Data Sets
I've heard everything from "it doesn't fit in Excel" to "it doesn't fit in ram for a standard dev's laptop (~10gb) to "it doesn't fit in ram in a decent sized EC2 instance (~250gb).
JimmyAustin··on AMD Threadripper 3990X 64-Core beats dual Xeon Platinum 8280 in benchmark leak
The first gen of Ryzen 7 chips didn't even include a cooler. I suspect they throw in the cools just so reviewers don't put "no cooler included" in the cons section of reviews.
JimmyAustin··on Australia’s top researchers urge politicians: “Listen to the science”
The party(s) in power are literally called the Coalition, as it's made up of two parties that have partnered up ( https://en.wikipedia.org/wiki/Coalition_(Australia) ).
JimmyAustin··on Home Price-to-Income Ratios
Australian tax law is incredibly geared towards home ownership, and the culture of owning your home is very, very strong. See https://en.wikipedia.org/wiki/Australian_Dream.

Personally, most of the people in my age cohort (mid 20s) who've bought homes, have bought in areas considerably further away from the city than they were raised.

JimmyAustin··on Home Price-to-Income Ratios
And 30-50% is A LOT more in absolute dollars than it is outside of Cali.
JimmyAustin··on The good, the bad and the ugly standup
I remember the exact moment I decided to leave a job. It was when, without a trace of irony, the project manager said “Alright everyone take a seat, it’s time for the standup”.
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