Daniel Lemire's blog
Parsing IP addresses crazily fast

Telegraph | source

Telegraph

Parsing IP addresses crazily fast

Most of us are familiar with IP addresses: they are strings of the form “ddd.ddd.ddd.ddd” where ddd is a decimal number of up to three digits in the range 0 to 255. For example, 127.0.0.1 or 192.168.0.2. Each of the four number is a byte value, and the address…

Easton Man's Channel

#今日看了什么 https://youtu.be/_iw64jXynDs

今年的 24 Hours of Le Mans 快要开始了，想起来不知道哪里看到的一句话：
You cannot win Le Mans, Le Mans choose its winner.

大概，人生也是这样。

#今日看了什么
https://youtu.be/_iw64jXynDs

YouTube

Qualifying Highlights I 2023 24 Hours of Le Mans I FIA WEC

Watch the highlights of Le Mans 24 Hours' qualifying session.

The FIA World Endurance Championship is the world’s premier international sportscar championship, contested over seven rounds across North America, Europe, Asia and the Middle East. With multiple…

https://dl.acm.org/doi/10.1145/3457207
我们的seznec老先生原来不干分支预测以后去干更有意思的东西了

ACM Transactions on Architecture and Code Optimization

Understanding Cache Compression | ACM Transactions on Architecture and Code Optimization

Hardware cache compression derives from software-compression research; yet, its implementation
is not a straightforward translation, since it must abide by multiple restrictions
to comply with area, power, and latency constraints. This study sheds light ...

Chips and Cheese
AMD’s RX 7600: Small RDNA 3 Appears
#ChipAndCheese

Telegraph | source
(author: clamchowder)

Telegraph

AMD’s RX 7600: Small RDNA 3 Appears

Late last year, AMD launched high end RDNA 3 with the Radeon RX 7900 XTX and Radeon RX 7900 XT. Now, they’ve rolling out smaller versions of RDNA 3 targeted towards more cost-conscious market segments. The Radeon RX 7600 replaces the Radeon RX 6600 XT in…

Daniel Lemire's blog
Peak credentialism

Telegraph | source

Telegraph

Peak credentialism

How much is a degree from a prestigious university worth? The answer is a bit difficult to answer because there are many cofounding factors: people from the connected class (folks that ‘know people’) tend to attend the most prestigious universities, and they…

Daniel Lemire's blog
Science and Technogy links (June 3 2023)

Telegraph | source

Telegraph

Science and Technogy links (June 3 2023)

There are fewer serial killers these days. Some suggests it is due to better forensic techniques: we catch the killers faster and more efficiently. Between the beginnings of the Web (1996) and today, the household Internet connection bandwidth got over 5000…

#今日看了什么
https://www.sacredheartsc.com/blog/building-a-personal-voip-system/

Sacredheartsc

Building a Personal VoIP System

Take control of your telephony with
Asterisk!

Firefox Profiler⁩ — ⁨Firefox⁩ 性能分析网页应用程序

支持导入并分析多种性能筛查器所记录的分析数据：
- Firefox profiler
- Linux perf
- Android SimplePerf
- Chrome 性能面板
- Android Studio

支持直接导入以 dhat 或 Google Trace Event 格式保存的性能分析数据。

https://profiler.firefox.com/

Random Number Generator Recommendations for Applications https://peteroupc.github.io/random.html

peteroupc.github.io

Random Number Generator Recommendations for Applications

#今日生草

https://www.ietf.org/rfc/rfc2324.txt

Hyper Text Coffee Pot Control Protocol (HTCPCP/1.0)

Credit: @cubercsl

最近老黄的256卡机器宣传E级算力，有几个事实希望大家了解

1. 老黄这个E级是算的INT8理论峰值性能（256x4P per card)
2. top500超算的评估性能是HPL，是FP64的实际性能，大约是理论性能的60-90%不等
3. 老黄的FP64理论峰值性能是256 x 34T = 8PFlops+
4. 目前top500上的E级超算只有美国一家，但中国也是有E级超算的，投入使用时间和美国的差不多甚至更早。（这个不信的话，SC20还是SC21有位chair的ppt可以看）

老黄这个目标市场还是有钱的ai公司，和超算的目标领域不太一样，没有太大的对比意义，无需给大家带来一种“超算怎么搞这么大规模才这点算力的”印象