wolf550e

20 ms·

121.
by wolf550e 4y ago
Have you seen https://isd.mceliece.org/1347.html ? DJB agrees with you.
122.
by wolf550e 4y ago
What does your comment have to do with OpenSSH?
123.
by wolf550e 4y ago
It's not 100% compatible with existing applications. IIRC Alpine Linux tried to switch and reverted back to openssl twice.
124.
by wolf550e 4y ago
The data is not laundered. Preconceived ideas and biases are laundered and given scientific sounding justifications.
125.
by wolf550e 4y ago
compiler autovectorization is poor, people often outperform it when writing SIMD code. intrinsics are so low level they might as well be assembly.
126.
by wolf550e 4y ago
I think Facebook BOLT relinks binaries: https://research.facebook.com/publications/bolt-a-practical-... https://groups.google.com/g/llvm-dev/c/ef3mKzAdJ7U/m/1shV64B...
127.
by wolf550e 4y ago
I guess see 2nd paragraph in this comment: https://news.ycombinator.com/item?id=34156068
128.
by wolf550e 4y ago
Consider javac, hotspot jvm and a java ahead of time compiler. All three are compilers.
129.
by wolf550e 4y ago
zstd has a long range mode, which lets it find redundancies a gigabyte away. Try --long and --long=31 for very long range mode. zstd has delta / patch mode, which creates a file that stores the "patch" to create a new file f
130.
by wolf550e 4y ago
Add [2014] to title.
131.
by wolf550e 4y ago
128bit SIMD on x86 is called SSE, not AVX. AVX is 256bit. SSE (first introduced with the Pentium 3) had many extensions that added instructions: SSE2, SSE3, SSSE3, SSE4.1, SSE4.2 and some others.
132.
by wolf550e 4y ago
You're not telling the most important part of that story: https://archive.is/KgAYd https://en.wikipedia.org/wiki/David_S._Miller https://en.wikipedia.org/wiki/Bryan_Cantrill
133.
by wolf550e 4y ago
You guess the MAC tag value of the message and measure how long it takes the server to return "bad MAC" error or behave in a way that means the MAC was bad. In 1/256 cases, it takes longer because the first byte was correct.
134.
by wolf550e 4y ago
The system was built with the assumption that you're going to have SREs, lots of them, with experience babysitting the systems, to keep them working. SREs were cheaper than building a system that can handle lots of unexpected things wi
135.
by wolf550e 4y ago
`static` variables are file-scoped, similar to module-scoped in other languages. Truly global variables are accessible from any file. Those should be very rare.
136.
by wolf550e 4y ago
You write "i.e." when you should write "e.g.".
137.
by wolf550e 4y ago
Right, but it kinda depends on what you mean by "portable". Only an interpreter will work without modification on a new host arch, but code for a JIT that is organized in such a way that makes it easy to add support for new host a
138.
by wolf550e 4y ago
Imagine that instead of developing an app in a popular programming language, someone implements an idiosyncratic domain specific language suitable for the kind of app they need to build, and then builds the app using that. The result would
139.
by wolf550e 4y ago
JPEG XL beats AVIF, in many cases. See for example: https://twitter.com/jonsneyers/status/1563442356493230080
140.
by wolf550e 4y ago
Yes, if you control both sides, always use zstd instead of deflate/gzip/zip.
141.
by wolf550e 4y ago
Modern compression formats are optimized for decoding huffman streams in parallel. See for example Fabian Giesen explaining about RAD's codecs and also about Yann Collet's zstandard: https://fgiesen.wordpress.com/2
142.
by wolf550e 4y ago
1. Add (2019) to title. 2. Use https://jepsen.io/consistency
143.
by wolf550e 4y ago
TLS1.3 removes one roundtrip. HTTP3 (QUIK) remove more by combining the TCP handshake with the TLS handshake.
144.
by wolf550e 4y ago
The official cli windows binaries are here: https://github.com/facebook/zstd/releases/ Afaik, they don't need any dependencies.
145.
by wolf550e 4y ago
Unless you have to use deflate/zlib/gzip/zip for compatibility or you're very constrained in amount of memory, you should always prefer zstd over deflate - it's always both faster and compresses better, so there is
146.
by wolf550e 4y ago
This is an uncompressed block. For database records or log lines, you should use dictionary trained on likely data. Then short records compress well. See what facebook does with zstd (they employ its author): https://engineering.
147.
by wolf550e 4y ago
That 750KB PNG can probably be a 50KB PNG. Even without resizing it compresses to less than half its size. https://duckdb.org/images/blog/duck_chewbacca.png
148.
by wolf550e 4y ago
I know of one case of Twitter doing client side validation [1]. Maybe there are more? 1 - https://github.com/qntm/base2048#note
149.
by wolf550e 4y ago
https://en.wikipedia.org/wiki/Attitude_control
150.
by wolf550e 4y ago
Some more discussion of the incident on /r/aviation https://old.reddit.com/r/aviation/comments/umzwrh/passenger_...

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