杰哥的{教学，运维，编程，调板子}小笔记
智算卡生态进校园之我见

Telegraph | source

Telegraph

智算卡生态进校园之我见

智算卡生态进校园之我见¶ 背景¶ 最近频繁地和各家智算卡（GPU、NPU，或者统称为 xPU）厂商交流，讨论如何培养软件生态、如何进入校园。同样的观点我已经跟不同的人讲过至少五遍了，索性写成一篇博客，一次讲清楚。 大背景¶ 故事的背景并不难理解：国内算力需求旺盛，而英伟达又难以进入，于是无论是国产厂商，还是非英伟达的海外厂商，都在设法培育国内市场。而培育市场特别关键的一步，就是培育生态。 由于我在学校里参与了多门课程的教学，接触到的也多是厂商里负责校园生态对接的员工，因此经常和他们聊起一个问题：怎样把这…

AMD's random number generator can't generate a 0? https://board.flatassembler.net/topic.php?t=24261

board.flatassembler.net

AMD's random number generator can't generate a 0 (+ app)

Arch Linux: Recent news updates
Mkinitcpio >=42 requires manual intervention for TPM2-based unlocking of LUKS devices

Starting with package version 42-1, the mkinitcpio systemd hook now includes systemd-pcrosseparator.service (as intended by systemd v261).

This affects the measurements of PCR values 0-7, 9 and 12-14. If you configured the systemd hook and unlock LUKS partitions, that depend on these values, you need to re-enroll the TPM2 in use.

For guidance, please refer to systemd-cryptenroll(1), or the ArchWiki article on systemd-cryptenroll, when using pinned values. Refer to systemd-pcrlock(8), when relying on custom policies and a disabled systemd-pcrlock-make-policy.service.

source
(author: David Runge)

Daniel Lemire's blog
A summer of AI optimization

Telegraph | source

Telegraph

A summer of AI optimization

I maintain and comaintain several open-source libraries. Some of them are widely used: ada parses URLs in Node.js, fast_float parses numbers in GCC’s standard library and in Chromium, simdjson parses JSON in Node.js, simdutf validates and transcodes Unicode…

Daniel Lemire's blog
More than a taken branch per cycle?

Telegraph | source
(author: Antonio Badia)

Telegraph

More than a taken branch per cycle?

Our processors can execute many instructions per cycle; they are superscalar. But not all instructions are equal. Branches are particularly tricky. A branch occurs often when you use an if-then clause or a loop. We distinguish between a taken branch and a…

Daniel Lemire's blog
AI is breaking the academic sorting machine

Telegraph | source

Telegraph

AI is breaking the academic sorting machine

I see the mathematicians panicking at what we can do with agentic AI. Let us be clear on what we are talking about. In a few weeks, someone who is not a high-level mathematician can, with AI, produce the equivalent of a good PhD thesis in math. I could see…

Measure internet censorship. Contribute to the largest open dataset https://ooni.org/install

ooni.org

Install OONI Probe

Measure internet censorship. Contribute to the world's largest open dataset on internet censorship. Install OONI Probe on Desktop and Mobile platforms

Chips and Cheese
Qualcomm’s Adreno X2 GPU
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

Qualcomm’s Adreno X2 GPU

Integrated GPUs have become a crucial component in recent laptop chips, thanks to a push for better graphics performance in ultraportable devices. AMD and Intel have both launched impressive iGPU implementations in recent years. Qualcomm’s laptop push needs…

Daniel Lemire's blog
Faster JSON parsing with SVE2 on ARM processors

Telegraph | source

Telegraph

Faster JSON parsing with SVE2 on ARM processors

ARM processors, like those in your phone, have instructions capable of processing several elements at once (SIMD). These instructions are called NEON. But many newer processors have a different SIMD extension called SVE. The latest ARM processors have SVE2.…

Easton Man's Channel

https://issues.chromium.org/u/1/issues/563087658 给chromium报了个bug，全民vibe时代还是有好处的

Raise 到 P0 了😂

https://issues.chromium.org/u/1/issues/563087658

给chromium报了个bug，全民vibe时代还是有好处的

Jemalloc 5.4.0 https://github.com/jemalloc/jemalloc/releases/tag/5.4.0

GitHub

Release 5.4.0 · jemalloc/jemalloc

This release contains over 160 commits, focusing on the technical debts
cleaning including refactorings, bug fixes, test coverage improvement, and
option cleanups. The release also includes portab...