rbultje

9 ms·

31.
by rbultje 3y ago
I've been using github actions cache to store build artifacts (object files) between builds. It takes a bit of fiddling but it's possible.
32.
by rbultje 3y ago
AV1 is more complex. Prediction can be more complex with things like "combined inter/intra" or "warped motion" or "overlapping block MC" compared to HEVC/VP9. Then there's additional postfilters
33.
by rbultje 3y ago
> When a profitable startup sells out, that's the founders also saying "profitable isn't enough for me". Or just "I'm done with this shit". It's remarkably difficult to run a small (software) busin
34.
by rbultje 3y ago
I have 2 boys, 10 & 12. The 12YO has an Apple Watch which is useful to keep track of where he is and being able to reach each him (or him reach us). No social media or games, which is what most people are worried about at that age. So i
35.
by rbultje 3y ago
> What makes this a problem in the U.S., but not in Europe? Setting up a business in Europe (for example in the Netherlands) requires significant paperwork. In the US, it's done in a few seconds. In the US, it requires years of cour
36.
Congress Should Restore R&D Tax Deductions to Help US Compete(news.bloombergtax.com)
1 points by rbultje 3y ago|0 comments
37.
by rbultje 3y ago
> Isn't this all referring to the "R&D tax credit"? No. The terminology is confusing. Section 174, specifically point 3, classifies software development as R&E as of 2022 and requires amortization over 5-15 years.
38.
by rbultje 3y ago
Amortizing makes sense for things that have a huge up-front cost and value over time, like - indeed - a robot, or a laptop, or a house. But salaries are not that, they are a continuous cost. I can take a loan on a house (mortgage), and lapt
39.
by rbultje 3y ago
Actually. For foreign expenses, the amortization period is 15 years instead of 5, so the cash flow problem is even worse. :-(.
40.
by rbultje 3y ago
It's like saying it would be good if there were two competing projects writing something akin to the Linux kernel. It's just not true. The mutually beneficial thing is to have one project where all developers are happy to work tog
41.
by rbultje 4y ago
> I had multiple drivers in a row cancel on me before pickup I had that exact same experience. Some of them even messaged me encouraging me to please cancel for them so that they would not incur a penalty. (I refused.) I've been usi
42.
by rbultje 4y ago
Liquid doesn't just mean "can trade out of it at any time", but also "would typically be willing to trade out of it at any time". If a market is in a downswing, you're typically told to hold on to your stocks:
43.
by rbultje 4y ago
"On average, 121 min were spent spelling and the average length of these communications was 131 characters per day. The patient’s intelligible messages comprised 5747 characters produced over 5338 min, corresponding to an average rate
44.
by rbultje 5y ago
Icelake and tigerlake. On AWS, this is m6i/c6i. [edit] earlier AWS machines (c5/m5) have AVX512 also, but not the subsets required by dav1d's assembly.
45.
by rbultje 6y ago
The official inflation numbers do not appear to reflect people's significant worries that rent prices or health care cost (etc.) keep going up.
46.
by rbultje 6y ago
> How working class voters end up aligning themselves with a party that is less likely to care about them, while cutting taxes for earners well above the working class income bracket. That's words vs. actions. His words were that he
47.
by rbultje 6y ago
Because educating underprivileged kids takes up to 20 years(school, college, potential post-grad studies), whereas the H1B worker can start immediately. H1B workers also typically have several years experience in the specific position where
48.
by rbultje 6y ago
I fully agree with you. I did finish the book, but it took forever. Some of my friends did not finish the book, but instead read shorter versions by the author, for example: https://www.nytimes.com/2020/01/24/
49.
by rbultje 6y ago
This response reminds me of: https://twitter.com/ID_AA_Carmack/status/1258531455220609025 Opensource/free software powers most of the stuff we take for granted. The software and their maintainers are equally
50.
by rbultje 6y ago
The affordable care act specifies that 80% of premiums must be spent on medical expenses. If not, the consumer gets a rebate at the end of the year. See e.g. https://www.investopedia.com/terms/m/medical-cost-ratio.
51.
by rbultje 6y ago
> for (i = 0; i <= N; ++i) { ... } The worst thing is that people take it as acceptable that this loop is going to operate differently upon overflow (e.g. assume N is TYPE_MAX) depending on whether i or N are signed vs. unsigned.
52.
by rbultje 6y ago
I/we understand the optimization, and I'm sure you understand the problem it brings to common procedures such as DSP routines that multiply signed coefficients from e.g. video or audio bitstreams: for (int i = 0; i < 64; i++)
53.
by rbultje 6y ago
I'd love your opinion on the abundance of "undefined behaviour" (as opposed to implementation-defined, or some new incantation such as "unknown result in variable but system is safe") for relatively trivial things s
54.
by rbultje 8y ago
Yes, it supports Windows natively. The tests were run on Windows.
55.
by rbultje 8y ago
10/12-bit can usually be done together, but are completely different from 8-bit. However, it's possible we'll do 10-bit first and then later on make the tiny adjustments that allow us to use them for both 10-bit as well as 12
56.
by rbultje 8y ago
dav1d is a decoder, not an encoder.
57.
by rbultje 8y ago
Right now, 10-bit decoding is horribly slow because the assembly optimizations only cover 8-bit, so it's probably 10-20x slower. We'll work on 10-bit next, and in the end, I'd expect it to be 30-50% slower than 8-bit.
58.
by rbultje 8y ago
No, it is written in C and assembly. See the gitlab graphs: https://code.videolan.org/videolan/dav1d/graphs/master/chart...
59.
by rbultje 8y ago
Hi! You have 2 options: 1) write pthread emulation for your target system. We wrote one for windows native threads, but others should be straightforward. 2) if you want thread-less, that's possible (single-threaded performance shows 10
60.
Dav1d: performance and completion of the first release(jbkempf.com)
125 points by rbultje 8y ago|37 comments

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