Forwarded from Solidot
AMD 宣布开源 Radeon 光线追踪分析器 RRA
2022-11-20 18:38:00 by 人类之子
AMD 开源了它的 Radeon 开源光线追踪分析器 Radeon Raytracing Analyzer (RRA)，该工具旨在帮助开发者改进光线追踪性能。AMD 是在今年夏天宣布了 RRA，但 RRA 1.0 最初发布时只提供了二进制包，现在正式公布了其代码，源代码托管在 GitHub 上，采用 MIT 许可证，支持 Windows 和 Linux，其中 Linux 主要针对的是 Ubuntu 发行版。构建 RRA 需要 Qt 5.15。
#开源
2022-11-20 18:38:00 by 人类之子
AMD 开源了它的 Radeon 开源光线追踪分析器 Radeon Raytracing Analyzer (RRA)，该工具旨在帮助开发者改进光线追踪性能。AMD 是在今年夏天宣布了 RRA，但 RRA 1.0 最初发布时只提供了二进制包，现在正式公布了其代码，源代码托管在 GitHub 上，采用 MIT 许可证，支持 Windows 和 Linux，其中 Linux 主要针对的是 Ubuntu 发行版。构建 RRA 需要 Qt 5.15。
#开源
👍1
Forwarded from Solidot
2035 年起将停止增加闰秒
2022-11-20 22:13:00 by 去年是个好年吧
11 月 18 日全球度量衡大会（CGPM）的各国代表做出决定，2035 年或更早起将停止增加闰秒。闰秒是不可预测的，因为它依赖于地球自转，而地球自转从长期看是不可预测的，它时而加速时而减速。这一决定意味着天文时 UT1 将允许与基于原子钟的协调世界时 UTC 相差一秒以上。从 1972 年起，每当 UTC 和 UT1 相差 0.9 秒以上时就会加入一个闰秒。加入闰秒会破坏精确计时的系统，会在数字时代产生巨大影响，Meta/Facebook 和 Google 都呼吁停止加入闰秒。CGPM 还提议在至少一百年内不增加闰秒，允许 UTC 和 UT1 之间相差一分钟。它计划与其它国际组织协商，在 2026 年前确定时间上限。俄罗斯代表投票反对在 2035 年后停止增加闰秒，它希望推迟到 2040 年之后，原因是该国的卫星导航系统 GLONASS 含有闰秒，而 GPS 等能忽略闰秒，这意味着俄罗斯可能需要更新其卫星和地面站。国际电信联盟（ITU）有可能阻止这一计划的推行，它认为现在不是做出决定的时候。
#地球
2022-11-20 22:13:00 by 去年是个好年吧
11 月 18 日全球度量衡大会（CGPM）的各国代表做出决定，2035 年或更早起将停止增加闰秒。闰秒是不可预测的，因为它依赖于地球自转，而地球自转从长期看是不可预测的，它时而加速时而减速。这一决定意味着天文时 UT1 将允许与基于原子钟的协调世界时 UTC 相差一秒以上。从 1972 年起，每当 UTC 和 UT1 相差 0.9 秒以上时就会加入一个闰秒。加入闰秒会破坏精确计时的系统，会在数字时代产生巨大影响，Meta/Facebook 和 Google 都呼吁停止加入闰秒。CGPM 还提议在至少一百年内不增加闰秒，允许 UTC 和 UT1 之间相差一分钟。它计划与其它国际组织协商，在 2026 年前确定时间上限。俄罗斯代表投票反对在 2035 年后停止增加闰秒，它希望推迟到 2040 年之后，原因是该国的卫星导航系统 GLONASS 含有闰秒，而 GPS 等能忽略闰秒，这意味着俄罗斯可能需要更新其卫星和地面站。国际电信联盟（ITU）有可能阻止这一计划的推行，它认为现在不是做出决定的时候。
#地球
Forwarded from Hacker News (yahnc_bot)
Inside boost::unordered_flat_map http://bannalia.blogspot.com/2022/11/inside-boostunorderedflatmap.html
Blogspot
Inside <code>boost::unordered_flat_map</code>
Introduction The case for open addressing SIMD-accelerated lookup boost::unordered_flat_map data structure Rehashing Hash post-mixing Sta...
Forwarded from Hacker News (yahnc_bot)
ABI compatibility in Python: How hard could it be? https://blog.trailofbits.com/2022/11/15/python-wheels-abi-abi3audit/
The Trail of Bits Blog
ABI compatibility in Python: How hard could it be?
TL;DR: Trail of Bits has developed abi3audit, a new Python tool for checking Python packages for CPython application binary interface (ABI) violations. We’ve used it to discover hundreds of inconsistently and incorrectly tagged package distributions, each…
Forwarded from Hacker News (yahnc_bot)
Kite is saying farewell, and is open-sourcing all of its code. https://www.kite.com/blog/product/kite-is-saying-farewell/
Code Faster with Kite
Kite is saying farewell
From 2014 to 2021, Kite was a startup using AI to help developers write code. We have stopped working on Kite, and are no longer supporting the Kite software. Thank you to everyone who used our product, and thank you to our team members and investors who…
Forwarded from Hacker News (yahnc_bot)
QuickJS Running in WebAssembly https://github.com/justjake/quickjs-emnoscripten
GitHub
GitHub - justjake/quickjs-emnoscripten: Safely execute untrusted Javanoscript in your Javanoscript, and execute synchronous code that…
Safely execute untrusted Javanoscript in your Javanoscript, and execute synchronous code that uses async functions - justjake/quickjs-emnoscripten
Forwarded from Lobste.rs
Reed-Solomon Error Correcting Codes from the Bottom Up
Comments
via jeanthomas@users.lobste.rs (jeanthomas)
Comments
via jeanthomas@users.lobste.rs (jeanthomas)
lobste.rs
Reed-Solomon Error Correcting Codes from the Bottom Up
0 comments
Forwarded from Hacker News (yahnc_bot)
How the First Transistor Worked https://spectrum.ieee.org/transistor-history
IEEE Spectrum
How the First Transistor Worked
Even its inventors didn’t fully understand the point-contact transistor
Forwarded from Hacker News (yahnc_bot)
Why does the E12 resistor sequence use 27 and 33 instead of 26 and 32? https://electronics.stackexchange.com/questions/643070/why-are-e12-resistor-values-10-12-15-18-22-27-33-39-47-56-68-82-and-not-10-12-15
Electrical Engineering Stack Exchange
Why does the E12 resistor sequence use 27 and 33 instead of 26 and 32?
On the assumption that the E12 values were chosen to be equally spaced logarithmically between 10 and 100 ohms we get the ideal values of:
10.00
12.12
14.68
17.78
21.54
26.10
31.62
38.31
46.42
56....
10.00
12.12
14.68
17.78
21.54
26.10
31.62
38.31
46.42
56....
Forwarded from Hacker News (yahnc_bot)
How Precision Time Protocol is being deployed at Meta https://engineering.fb.com/2022/11/21/production-engineering/precision-time-protocol-at-meta/
Engineering at Meta
How Precision Time Protocol is being deployed at Meta
Implementing Precision Time Protocol (PTP) at Meta allows us to synchronize the systems that drive our products and services down to nanosecond precision. PTP’s predecessor, Network Time Protocol (…
Forwarded from Hacker News (yahnc_bot)
TinyGL 0.4.1 https://bellard.org/TinyGL/
Forwarded from sh1marin的野餐和露天影院 (sh1marin)
🥰2
Forwarded from Hacker News (yahnc_bot)
Extremely Linear Git History https://westling.dev/b/extremely-linear-git
westling.dev
Extremely Linear Git History
Forwarded from Hacker News (yahnc_bot)
Improving Firefox stability with this one weird trick https://hacks.mozilla.org/2022/11/improving-firefox-stability-with-this-one-weird-trick/
Mozilla Hacks – the Web developer blog
Improving Firefox stability with this one weird trick
Poorly behaving web pages and apps are no longer capable of crashing the browser by exhausting memory, thanks to a simple trick.