Daniel Lemire's blog
From code reuse to the impact of generative AI

Telegraph | source

Telegraph

From code reuse to the impact of generative AI

Back when I started programming, project teams were large. Organizations had dozens of programmers on sprawling projects. Reusing code was not trivial. Sharing code required real effort. Sometimes you had to hand over a disk or recopy code from a printout.…

马上要填志愿了，欢迎各位积极转发 https://colleges.chat ，以及去 https://www.wenjuan.com/s/UZBZJv8lWrd/ 更新一些最新数据。

colleges.chat

大学生活质量指北

收集全世界各高校招生时不会写明但实实在在影响大学生活质量的详尽信息

HND-PEK

TIL: 查看包含某个 commit 的最近 tag

可以用来判断某个 commit 被包含在哪个版本里

git describe --contains <commit-hash>

杰哥的{运维，编程，调板子}小笔记
ARM Neoverse V1 (代号 Zeus) 的 BTB 结构分析

Telegraph | source

Telegraph

ARM Neoverse V1 (代号 Zeus) 的 BTB 结构分析

ARM Neoverse V1 (代号 Zeus) 的 BTB 结构分析¶ 背景¶ ARM Neoverse V1 是 ARM Neoverse N1 的下一代服务器 CPU，之前我们分析过 Neoverse N1 的 BTB 设计。而 ARM Neoverse V1 在很多地方都和 Cortex-X1 类似，有了一些改进，在这里对它的 BTB 做一些分析。 官方信息¶ 首先收集了一些 ARM Neoverse V1 的 BTB 结构的官方信息： SW defined cars: HPC, from the…

Daniel Lemire's blog
Discover C++26’s compile-time reflection

Telegraph | source

Telegraph

Discover C++26’s compile-time reflection

Herb Sutter just announced that the verdict is in: C++26, the next version of C++, will include compile-time reflection. Reflection in programming languages means that you have access the code’s own structure. For example, you can take a class, and enumerate…

Arch Linux: Recent news updates
linux-firmware >= 20250613.12fe085f-5 upgrade requires manual intervention

With 20250613.12fe085f-5, we split our firmware into several vendor-focused packages. linux-firmware is now an empty package depending on our default set of firmware.

Unfortunately, this coincided with upstream reorganizing the symlink layout of the NVIDIA firmware, resulting in a situation that Pacman cannot handle. When attempting to upgrade from 20250508.788aadc8-2 or earlier, you will see the following errors:

linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad103 exists in filesystem
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad104 exists in filesystem
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad106 exists in filesystem
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad107 exists in filesystem

To progress with the system upgrade, first remove linux-firmware, then reinstall it as part of the upgrade:

# pacman -Rdd linux-firmware
# pacman -Syu linux-firmware

source
(author: Jan Alexander Steffens)

Daniel Lemire's blog
Life expectancy of men in Canadian provinces

Telegraph | source

Telegraph

Life expectancy of men in Canadian provinces

n North America, my home province of Quebec has a slightly higher life expectancy than the rest of the country. It is also a poorer-than-average province, so that is maybe surprising. For 2023, the life expectancy at birth in Ontario was 82.33 years, whereas…

Chips and Cheese
AMD's Freshly-baked MI350: An Interview with the Chief Architect
#ChipAndCheese

Telegraph | source
(author: George Cozma)

Telegraph

AMD's Freshly-baked MI350: An Interview with the Chief Archi…

Hello you fine Internet folks,At AMD's Advancing AI 2025, I had the pleasure of interviewing Alan Smith, AMD Senior Fellow and Chief Instinct Architect, about CDNA4 found in the MI350 series of accelerators. Hope y'all enjoy! Transcript below has been edited…

Arch Linux: Recent news updates
Plasma 6.4.0 will need manual intervention if you are on X11

On Plasma 6.4 the wayland session will be the only one installed when the users does not manually specify kwin-x11.

With the recent split of kwin into kwin-wayland and kwin-x11, users running the old X11 session needs to manually install plasma-x11-session, or they will not be able to login. Currently pacman is not able to figure out your personal setup, and it wouldn't be ok to install plasma-x11-session and kwin-x11 for every one using Plasma.

tldr: Install plasma-x11-session if you are still using x11

source
(author: Tomaz Canabrava)

PEK-HND

Re: searchlight

微软 Outlook consumer 消费者电子邮件业务最近加强了对大批量发信方的安全要求，具体来说此前只会导致邮件被放入垃圾邮件箱的 SPF/DKIM/DMARC 问题现在会无条件退信，错误代码 550; 5.7.515，这一改动是在 5 月 5 日生效的，收件方无法通过任何方式绕过这一问题，包括将发件方加入可信发件人列表 https://support.microsoft.com/en-us/topic/fix-ndr-error-550-5-7-515-in-outlook-com-34cfe8f8…

笑了，感觉过段时间闲下来想写篇文章讲几个现代人需要自建邮件系统的理由

微软 Outlook consumer 消费者电子邮件业务最近加强了对大批量发信方的安全要求，具体来说此前只会导致邮件被放入垃圾邮件箱的 SPF/DKIM/DMARC 问题现在会无条件退信，错误代码 550; 5.7.515，这一改动是在 5 月 5 日生效的，收件方无法通过任何方式绕过这一问题，包括将发件方加入可信发件人列表

https://support.microsoft.com/en-us/topic/fix-ndr-error-550-5-7-515-in-outlook-com-34cfe8f8-6fbf-457e-9e8b-9e4dbaf4e0ef → https://techcommunity.microsoft.com/blog/microsoftdefenderforoffice365blog/strengthening-email-ecosystem-outlook%E2%80%99s-new-requirements-for-high%E2%80%90volume-senders/4399730

目前已知 QQ 邮箱 @qq.com 不满足这一要求，可以认为腾讯其他相关的服务也不满足，尚未就此事联系腾讯客服（我要睡觉）

Microsoft

Fix NDR error "550 5.7.515" in Outlook.com - Microsoft Support

Learn how to fix email issues for error code 5.7.515 when sending email to Outlook.com (the sending domain does not meet the required authentication level).

Resurrecting a dead torrent tracker and finding 3M peers https://kianbradley.com/2025/06/15/resurrecting-a-dead-tracker.html

Kian Bradley’s Blog

Resurrecting a dead torrent tracker and finding 3 million peers

So I was uh, downloading some linux isos, like usual. It was going slowly, so I opened up the Trackers tab in qBittorrent and saw the following:

Chips and Cheese
AMD’s CDNA 4 Architecture Announcement
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

AMD’s CDNA 4 Architecture Announcement

CDNA 4 is AMD’s latest compute oriented GPU architecture, and represents a modest update over CDNA 3. CDNA 4’s focus is primarily on boosting AMD’s matrix multiplication performance with lower precision data types. Those operations are important for machine…

Arch Linux: Recent news updates
Transition to the new WoW64 wine and wine-staging

We are transitioning the wine and wine-staging package to a pure wow64 build. This change removes the dependency on the multilib repository for wine and wine-staging.

The main reason for this is to align with upstream Wine development, which simplifies packaging and the dependency chain.

Potential Issues:

● OpenGL Performance: A known limitation of the new WoW64 mode is reduced performance for 32-bit applications that use OpenGL directly
● Breaking Changes: Existing 32-bit prefixes needs to be recreated

If you are facing issues with 32 bit prefixes, please recreate these and reinstall the application.

source
(author: Peter Jung)

Daniel Lemire's blog
Don’t argue: build

Telegraph | source

Telegraph

Don’t argue: build

Prescientific and preindustrial thought tied truth to authority and tradition. “We’ve always done it this way.” “The king decrees it.” “We know this is how it’s done.” The scientific and industrial revolutions shattered this mindset. Suddenly, outsiders could…

Daniel Lemire's blog
Metcalfe’s Law against Brooks’ Law

Guido van Rossum, Python’s creator, recently said: “We have a huge community, but relatively few people, relatively speaking, are contributing meaningfully.”

This highlights a paradox.

Software thrives on the network effect, or Metcalfe’s Law, where a system’s value scales with the square of its users. Linux excels because its vast user base fuels adoption, documentation, and compatibility everywhere.

But larger teams don’t build better software—often the reverse. Brooks’ Law, from Fred Brooks’ The Mythical Man-Month, shows that adding people increases communication overhead, slowing progress. The Pareto Principle (80/20 rule) also applies: a small minority drives most meaningful contributions. Great software often stems from a single visionary or a small, cohesive team, not a crowd.

The network effect applies primarily to users, not necessarily to creators.

source