mumumu

5 ms·

1.
by mumumu 3y ago
In hardware engineering this is called critical path.
2.
by mumumu 3y ago
Amdahl's law is common sense, but also the one of the reasons premature optimization is the root of all evil. A small speedup on the longest (by time) part of the program is usually better than infinite speedup on a short part of the p
3.
by mumumu 3y ago
It seems the limit does not apply to Quotes and Liked tab on users profiles.
4.
by mumumu 3y ago
The bottleneck is bandwidth and storage not computer power. Data from sensor and to display are usually (but not always) raw and uncompressed. To go beyond 8k 120fps we will need fiber, or better compression. We have good codecs to move dat
5.
by mumumu 3y ago
Flow instability is one of the biggest challenges to get them to operate for long time without blowing up. Of course, there are others. Any progress on the control of chaotic flow is great news. Even at subsonic speed.
6.
by mumumu 3y ago
Also detonation. It Could make Rotation Detonation Engines possible.
7.
Passive Daytime Radiative Cooling(en.wikipedia.org)
1 points by mumumu 4y ago|0 comments
8.
by mumumu 4y ago
“[Balloons] have extremely small radar and thermal cross sections, making them relatively invulnerable to most traditional tracking and targeting method". https://www.thedrive.com/the-war-zone/why-shooting-down-chi
9.
by mumumu 4y ago
They have smaller cross section than many stealth jets: https://www.thedrive.com/the-war-zone/why-shooting-down-chin...
10.
by mumumu 4y ago
Alder Lake and Raptor Lake workstation (W680 Chipset) doesn't have AVX512 enabled.
11.
by mumumu 4y ago
Now we only need a consumer CPU from Intel with AVX-512 enabled.
12.
by mumumu 4y ago
I don't think Apple has interest in small markets. They are really good at making stuff at huge volumes.
13.
by mumumu 4y ago
Silicon on lunar regolith is mostly plagioclase, pyroxene, and olivine. Quartz (SiO2) is <1%. Not exactly comparable.
14.
by mumumu 4y ago
The aviation industry is averse to change. Most planes are still being updated with floppy disk. But I agree. High end commercial solid storage, such Optane, would likely exceeds the requirements needed by the aviation industry.
15.
by mumumu 4y ago
I wish the Sony protocol was open source. It is impossible for a hobbyist to work with SLVS-EC.
16.
by mumumu 4y ago
*avoid branches The blog post I mentioned: Paper: Parsing Gigabytes of JSON per Second https://branchfree.org/2019/02/25/paper-parsing-gigabytes-of... Another related post from Lemire: Ridiculously fast unico
17.
by mumumu 4y ago
This is true on a few streaming application (such as parsing). And most of the speedup is because of tricks to avoid doing beaches. There is a great blog post from one of the authors of JSON SIMD discussing this. I'm on mobile, there i
18.
by mumumu 4y ago
CPUs with high power and high performance gets binned into mobile and iot sku. But those i9 ks sku can achieve a couple hundred extra MHz. But have a much higher base clock speed.
19.
by mumumu 4y ago
From a quick search, it seems to be due the Radon gas. Exposure to Radon is the #1 cause of lung cancer on non-smoker. Canada ranks third on indoor radon concentration worldwide.
20.
by mumumu 4y ago
Astronomical cameras and microscope cameras are affordable. Some of them mm support sensors that uses them even supports Sony's proprietary protocol. A lot of sbc boards support MIPI CSI (iirc even RPI). Nvidia robotic modules has IO
21.
by mumumu 4y ago
They can gather this data through other means...
22.
by mumumu 4y ago
It is hard to find yerba mate that doesn't taste stale outside of south of South America. Friends that drink it ask for people traveling to SA to bring them some. They are also very particular about how to choose it.
23.
by mumumu 4y ago
Something I realized is that the dark patterns change from country for country. Brazilian websites uses patterns that aren't that common on American sites. All news organizations and all large e-commerce uses the browser's notific
24.
by mumumu 4y ago
This is probably intended for encoding webcam chat between Intel devices. They can hash the video "frames" to detect interception.
25.
by mumumu 4y ago
This is not new. It is news because it's from Intel. I looked into that a year or two ago and there were papers on the this. Anyone who is familiar with Euler Video Magnification and with neural network likely though of that. Does this
26.
by mumumu 4y ago
All languages implemented with llvm-mlir. Others languages such Chapel, Halide probably will do fine
27.
by mumumu 4y ago
Every once and a while I have a look at the changelog of the FF dev. It is good way to find the flags to disable features and to have an idea how the web is changing overall. The downside of cherry picking features is that your browser fing
28.
by mumumu 4y ago
In about:config you can enable or disable features individually. Recently they added ":modal" that will make paywalls harder to bypass. Most sites haven't implement yet, but I've already disabled this "feature"
29.
by mumumu 4y ago
The official spec is quite good. See csswg
30.
by mumumu 4y ago
Me too. But nowadays you can define them with with something like a ascii table. Also, check "massonary". There are so many cool features in css being released today that soon that banner "Best viewed on Netscape 3 on 800*600

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