Hacker News

Google Axion Processors – Arm-based CPUs designed for the data center https://cloud.google.com/blog/products/compute/introducing-googles-new-arm-based-cpu/

省流：Neoverse V2

Google Axion Processors – Arm-based CPUs designed for the data center https://cloud.google.com/blog/products/compute/introducing-googles-new-arm-based-cpu/

Google Cloud Blog

Introducing Google’s new Arm-based CPU | Google Cloud Blog

The custom Axion Arm-based processor is designed for general-purpose workloads like web and app servers, databases, analytics, CPU-based AI, and more.

Chips and Cheese
Intel’s Ambitious Meteor Lake iGPU
#ChipAndCheese

Telegraph | source
(author: clamchowder)

Telegraph

Intel’s Ambitious Meteor Lake iGPU

Intel and AMD both tried to ship iGPUs fast enough to compete with low end discrete cards over the past 10 years with mixed results. Recently though, powerful iGPUs have been thrown back into the spotlight. Handhelds like Valve’s Steam Deck and ASUS’s ROG…

Arch Linux: Recent news updates
Increasing the default vm.max_map_count value

The vm.max_map_count paramater will be increased from the default 65530 value to 1048576.

This change should help address performance, crash or start-up issues for a number of memory intensive applications, particularly for (but not limited to) some Windows games played through Wine/Steam Proton. Overall, end users should have a smoother experience out of the box with no expressed concerns about potential downsides in the related proposal on arch-dev-public mailing list.

This vm.max_map_count increase is introduced in the 2024.04.07-1 release of the filesystem package and will be effective right after the upgrade.

Before upgrading, in case you are already setting your own value for that parameter in a sysctl.d configuration file, either remove it (to switch to the new default value) or make sure your configuration file will be read with a higher priority than the /usr/lib/sysctl.d/10-arch.conf file (to supersede the new default value).

source
(author: Robin Candau)

Daniel Lemire's blog
C++ web app with Crow: early scalability results

Telegraph | source

Telegraph

C++ web app with Crow: early scalability results

Last year, I looked at writing small “hello world” web applications in various programming languages (Go, JavaScript, Nim…). Go, using nothing but the standard library, did well. In these benchmarks, I am just programming an HTTP route that returns a small…

杰哥的{运维，编程，调板子}小笔记

开发一个链接器（3）

前言

这个系列的前两篇博客实现了一个简单的静态链接器，它可以输入若干个 ELF .o 文件，输出 ELF 可执行文件。接下来，我们进一步支持动态库：输入若干个 ELF .o 文件，输出 ELF 动态库。

source

Easton Man's Channel

#今日看了什么 https://youtu.be/SuA9l77ODbs

唉原来王羽佳都已经37岁了，怪不得看起来老了。想当年第一次看到王羽佳的演奏还是在这个古代视频
https://b23.tv/o6E1gtH

Bilibili

贝多芬 “为丢失的一便士而愤怒”_哔哩哔哩_bilibili

贝多芬 “为丢失的一便士而愤怒”是【钢琴演奏】王羽佳12岁演奏录像的第1集视频，该合集共计20集，视频收藏或关注UP主，及时了解更多相关视频内容。

Chips and Cheese
Inside Control Data Corporation’s CDC 6600
#ChipAndCheese

Telegraph | source
(author: clamchowder)

Telegraph

Inside Control Data Corporation’s CDC 6600

Note the publish date on this article. Computers fill essential roles in modern, growing economies. Banks, airlines, and other large business have used computers to efficiently handle large amounts of data. As these businesses grow and cope with ever larger…

Daniel Lemire's blog
Science and Technology links (March 31 2024)

Telegraph | source

Telegraph

Science and Technology links (March 31 2024)

Large language models (e.g., ChatGPT) do better at legal questions that lawyers: Our empirical analysis benchmarks LLMs against a ground truth set by Senior Lawyers, uncovering that advanced models match or exceed human accuracy in determining legal issues…

Harry Chen’s Blog
在 Linux 6.6 上使用 Intel DG1 GPU 加速视频编解码

Telegraph | source
(author: Shengqi Chen ([email protected]))

Telegraph

在 Linux 6.6 上使用 Intel DG1 GPU 加速视频编解码

最近利用手头的闲暇计算资源攒了个 NAS，运行 TrueNAS 系统，并使用 Jellyfin 作为流媒体播放平台。Jellyfin 会根据客户端（通常是浏览器）的情况（如网络、硬件等）决定是否要对视频进行重新编解码。但即使是分配了 64 核的 7742，也对高码率的 HEVC 10bit 视频力不从心，更不用说 HDR 视频还需要额外做 tone mapping，一套组合拳下来帧率甚至不到个位数。因此，使用 GPU 加速迫在眉睫。 在 Intel 员工 @gaoyichuan 的推荐下，我从闲鱼花 260…

Daniel Lemire's blog
Fast and concise probabilistic filters in Python

Telegraph | source

Telegraph

Fast and concise probabilistic filters in Python

Sometimes you need to filter out or filter in data quickly. Suppose that your employer maintains a list of forbidden passwords or URLs or words. You may store them in a relational database and query them as needed. Unfortunately, this process can be slow…

本频道温馨提醒：若遇到疑似诈骗可拨打反诈咨询电话 96110 咨询。若发现上当受骗，请注意及时保存好相关证据，并第一时间拨打 110 报警。

杰哥的{运维，编程，调板子}小笔记

开发一个链接器（2）

前言

这个系列的第一篇博客实现了一个最简单的静态链接器，它可以输入单个 ELF .o 文件，输出 ELF 可执行文件。接下来，我们需要把它升级到支持输入两个或者更多的 ELF .o 文件。

source

Arch Linux: Recent news updates
The xz package has been backdoored

TL;DR: Upgrade your systems and container images now!

As many of you may have already read 1, the upstream release tarballs for xz in version 5.6.0 and 5.6.1 contain malicious code which adds a backdoor.

This vulnerability is tracked in the Arch Linux security tracker 2.

The xz packages prior to version 5.6.1-2 (specifically 5.6.0-1 and 5.6.1-1) contain this backdoor.

The following release artifacts contain the compromised xz:

● installation medium 2024.03.01
● virtual machine images 20240301.218094 and 20240315.221711
● container images created between and including 2024-02-24 and 2024-03-28

The affected release artifacts have been removed from our mirrors.

We strongly advise against using affected release artifacts and instead downloading what is currently available as latest version!

Upgrading the system

It is strongly advised to do a full system upgrade right away if your system currently has xz version 5.6.0-1 or 5.6.1-1 installed:

pacman -Syu

Upgrading container images

To figure out if you are using an affected container image, use either

podman image history archlinux/archlinux

or

docker image history archlinux/archlinux

depending on whether you use podman or docker.

Any Arch Linux container image older than 2024-03-29 and younger than 2024-02-24 is affected.

Run either

podman image pull archlinux/archlinux

or

docker image pull archlinux/archlinux

to upgrade affected container images to the most recent version.

Afterwards make sure to rebuild any container images based on the affected versions and also inspect any running containers!

Regarding sshd authentication bypass/code execution

From the upstream report 1:

openssh does not directly use liblzma. However debian and several other distributions patch openssh to support systemd notification, and libsystemd does depend on lzma.

Arch does not directly link openssh to liblzma, and thus this attack vector is not possible. You can confirm this by issuing the following command:

ldd "$(command -v sshd)"

However, out of an abundance of caution, we advise users to remove the malicious code from their system by upgrading either way. This is because other yet-to-be discovered methods to exploit the backdoor could exist.

source
(author: David Runge)

Chips and Cheese
Why x86 Doesn’t Need to Die
#ChipAndCheese

Telegraph | source
(author: clamchowder)

Telegraph

Why x86 Doesn’t Need to Die

Hackaday recently published an article titled “Why x86 Needs to Die” – the latest addition in a long-running RISC vs CISC debate. Rather than x86 needing to die, I believe the RISC vs CISC debate needs to die. It should’ve died a long time ago. And by long…

CAN-PKX

Matt Keeter
It's Free Real Estate

source
(author: Matt Keeter ([email protected]))