Chips and Cheese
Telum II at Hot Chips 2024: Mainframe with a Unique Caching Strategy
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

Telum II at Hot Chips 2024: Mainframe with a Unique Caching …

Mainframes still play a vital role in today, providing extremely high uptime and low latency for financial transactions. Telum II is IBM’s latest mainframe processor, and is designed unlike any other server CPU. It only has eight cores, but runs them at a…

Chips and Cheese
An Interview with Susan Eickhoff and Christian Jacobi from IBM at Hot Chips 2024
#ChipAndCheese

Telegraph | source
(author: George Cozma)

Telegraph

An Interview with Susan Eickhoff and Christian Jacobi from I…

This is our second video interview from Hot Chips 2024 and this time I got to sit down with Susan Eickhoff and Christian Jacobi from IBM to talk about their brand new Telum II processor and Spyre AI cards from the development process to the architecture of…

Chips and Cheese
An Interview with Intel’s Arik Gihon about Lunar Lake at Hot Chips 2024
#ChipAndCheese

Telegraph | source
(author: George Cozma)

Telegraph

An Interview with Intel’s Arik Gihon about Lunar Lake at Hot…

For today’s article we have another video interview for you folks, this time with Arik Gihon from Intel where we talk about Lunar Lake. Before we get into the video and the transcript, I would just like to give a massive thank you to all of you who have donated…

Chips and Cheese
AmpereOne at Hot Chips 2024: Maximizing Density
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

AmpereOne at Hot Chips 2024: Maximizing Density

Ampere Computing focuses on developing cloud-native processors, and aims to serve many users while providing security, privacy, and consistent performance, without relying on process node scaling. Features that increase performance at the expense of consistency…

Chips and Cheese
Tesla’s TTPoE at Hot Chips 2024: Replacing TCP for Low Latency Applications
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

Tesla’s TTPoE at Hot Chips 2024: Replacing TCP for Low Laten…

Last year at Hot Chips 2023, Tesla introduced their Dojo supercomputer. For Tesla, machine learning is focused on automotive applications like self driving cars. Training deals with video, which can demand a lot of IO bandwidth. As an example, the size of…

Chips and Cheese
Hot Chips 2024: Qualcomm’s Oryon Core
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

Hot Chips 2024: Qualcomm’s Oryon Core

Today, Qualcomm is presenting on their Oryon core. We’ve covered this core previously in a separate article, so I’ll focus on new details or differences covered in the review.

Chips and Cheese
AMD’s Radeon 890M: Strix Point’s Bigger iGPU
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

AMD’s Radeon 890M: Strix Point’s Bigger iGPU

AMD’s iGPUs have seen plenty of recent success. Handheld gaming devices like Valve’s Steam Deck and Asus’s ROG Ally both use AMD integrated graphics. AMD’s last generation mobile offering, codenamed Phoenix, already did well against Intel and Qualcomm’s competing…

Chips and Cheese
Zen 5 Variants and More, Clock for Clock
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

Zen 5 Variants and More, Clock for Clock

Zen 5 is AMD’s newest core architecture. Just a few weeks after launch, Zen 5 has already hit the market with several different cache, clock speed, and AVX-512 configurations. Here, I’m comparing Zen 5 variants along with a pile of older cores with clock…

Chips and Cheese
AMD’s Ryzen 9950X: Zen 5 on Desktop
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

AMD’s Ryzen 9950X: Zen 5 on Desktop

AMD’s desktop Zen 5 products, codenamed Granite Ridge, are the latest in the company’s line of high performance consumer offerings. Here, we’ll be looking at AMD’s Ryzen 9 9950X. We already saw most of what Zen 5 looked like in Strix Point, so this article…

Chips and Cheese
AMD’s Strix Point: Zen 5 Hits Mobile
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

AMD’s Strix Point: Zen 5 Hits Mobile

AMD’s Zen line has gone a long way since it brought AMD’s CPU efforts back from the dead. Successive Zen generations delivered steady improvements that made AMD an increasingly dangerous competitor to Intel. Zen 5 is the latest member of the Zen line, and…

Chips and Cheese
Cortex A73’s Not-So-Infinite Reordering Capacity
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

Cortex A73’s Not-So-Infinite Reordering Capacity

Cortex A73 aimed to address the power and thermal issues that prevented Arm’s early 64-bit cores from reaching their full potential. It started a trend that saw Arm successfully capture the smartphone CPU market, and did so by emphasizing efficiency. Part…

Chips and Cheese
Skymont: Intel’s E-Cores reach for the Sky
#ChipAndCheese

source
(author: clamchowder)

Chipsandcheese

Skymont: Intel’s E-Cores reach for the Sky

The 2020s were a fun time for Intel’s Atom line, which went from an afterthought to playing a major role across Intel’s high performance client offerings.

Chips and Cheese
Chips and Cheese Interviews Ronak Singhal
#ChipAndCheese

Telegraph | source

Telegraph

Chips and Cheese Interviews Ronak Singhal

For today’s article we have another video interview for you folks, this time with Ronak Singhal from Intel where we talk about Granite Rapids AP. Before we get into the video and the transcript, I would just like to give a massive thank you to all of you…

Chips and Cheese
Lion Cove: Intel’s P-Core Roars
#ChipAndCheese

source
(author: clamchowder)

Chipsandcheese

Lion Cove: Intel’s P-Core Roars

Intel’s mobile CPUs have undergone massive changes over the past couple generations as Intel defends its laptop market against AMD, Qualcomm, and to a lesser extent Apple.

Harry Chen’s Blog
msmtp 配置 Outlook / O365 邮箱的 OAuth2 认证

我的 WSL 日常使用 msmtp 作为 MTA，它通过 starttls 连接到 Outlook 邮箱的 SMTP 服务器（smtp-mail.outlook.com）。此前 Outlook 的安全策略强制要求多因素认证（MFA），但允许使用应用密码，因此我一直在使用传统的 GPG 加密应用密码的方法。但今天我尝试发送邮件时，得到了以下的错误：

535 5.7.139 Authentication unsuccessful, basic authentication is disabled. [SI2P153CA0032.APCP153.PROD.OUTLOOK.COM 2024-09-25T08:14:40.271Z 08DCDD1F9EAD5AFB]

在 TUNA 群中为此询问群友，获得了微软的公告链接。简而言之，从 2024/9/16 开始，Outlook 的服务器不再支持传统的 SMTP AUTH 方式进行认证，而必须使用 OAuth2。

对于邮件客户端来说，OAuth2 有两种常用的认证方式，bearer token 或者 SASL XOAUTH2；Outlook 使用前者，Gmail 是后者。msmtp 两种都支持，只要对应修改 auth 选项即可。然而，msmtp 和其他大多数命令行 MTA 一样，只能使用而不能管理 OAuth2 token（也就是说，用户需要负责获取和定期刷新）。因此，需要借助第三方工具来管理 OAuth 的状态。

Arch Wiki 的 msmtp 页面推荐使用的工具是 oama，这是一个 Haskell 写的小工具，可以用在 msmtp 的 password-eval 中。然而，使用起来遇到了一些棘手的问题。

具体来说，oama 需要自己配置 OAuth 使用的 client_id 和 client_secret。网上能公开获取到的几个 client_id 都需要配置对应的回调 URL（尽管其实最终客户端可以不真的通过回调获取 code，直接在最后的 302 请求中截获即可；但如果不按配置填写，根本无法进入授权流程），如 ThunderBird 的要求 http://localhost:8080 或者 https://localhost。但 oama 的配置只支持形如 http://127.0.0.1[:port] 的格式，其他格式要么报无法解析的错误，要么无法启动 Web Server listen。我完全不会 Haskell，这个修不来。后续又找到了别的 client_id，但发现无法使用个人的 Outlook 账号登录，只能用组织账号（Microsoft 365），这显然也不是我想要的。

于是我只能选择在 Office 365 中创建了一个 App，配上所需的几个权限（用 OAuth 术语来说叫 scope），但发现微软接受的本地回调只能以 http://localhost 开头，看来 oama 是没法用了。又经过一番搜索，我找到了 mutt 带的 mutt_oauth2.py。把这个文件复制出来，修改其中的 client 相关配置，然后执行：

user@~:$ python3 ~/.local/bin/mutt_oauth2.py -t ~/.local/var/email/outlook.gpg --authorize
OAuth2 registration: microsoft
Preferred OAuth2 flow ("authcode" or "localhostauthcode" or "devicecode"): localhostauthcode
Account e-mail address: [email protected]

后续在给出的链接完成认证即可。如果脚本报告 POP3 鉴权失败，很可能是 Outlook 的设置中没有打开 POP3 服务。最后，修改 msmtp 的配置文件：

account outlook
host smtp-mail.outlook.com
from [email protected]
user [email protected]
tls_starttls on
auth xoauth2
passwordeval python3 ~/.local/bin/mutt_oauth2.py ~/.local/var/outlook.gpg

在每次发送邮件时，mutt_oauth2.py 会检查 token 的可用性，并在需要时刷新。如果 refresh token 也过期了，则会自动重新发起授权。这样，我又可以愉快地使用 mail 和 git-sendmail 等工具了。

就在我以为完事大吉的时候，还是遇到了新的问题（但和 Outlook 没有关系）：如果同时调用 gpg 和 msmtp（如 foo | gpg --clear-sign | msmtp [email protected]），则只有第一个 gpg 可以正确调用 pinentry 来使用智能卡进行签名，而 msmtp 的 passwordeval 脚本调用的 gpg 无法正常触发 pinentry，会卡在 gpg --decrypt 中。尝试使用 shell substitution 也遇到了同样的问题（msmtp [email protected] <(foo | gpg --clear-sign)）。似乎是因为我使用了 gpg-agent，而上述命令中都有两个 gpg 进程同时启动，就会有一个无法连接到 agent。目前我只能通过每次只执行一个 gpg 来绕过问题。

附录

为方便起见，公开我的 OAuth Application 配置（由于只在本地使用，公开 secret 没有太大的安全风险）：

● 名称：msmtp OAuth
● Client ID: 1ba11cc8-c6d1-4ae6-bd88-6becf878f8df
● Client Secret: lBm8Q~_IfyNpFUZ6KydTc4QHjLl1IwcCxFhxqa7n（过期日：2026/9/24）
● Redirect URI: http://localhost（经测试，可以增加任意端口号）
● Scope: IMAP.AccessAsUser.All, POP.AccessAsUser.All, SMTP.Send, User.Read，此外 offline_access 会由客户端额外请求

说明：上述配置仅供测试，我不以任何形式保证其可用性或对此负任何责任。如选择使用，您需要承担任何可能的后果。

在 Microsoft Entra 平台上配置 OAuth App 时，我还遇到了一个坑点：如果授权时指定的 tenate 是 common，那么 signInAudience 必须设置成 AzureADandPersonalMicrosoftAccount 或者 AzureADMyOrg（此选项会导致被标记成 Consumer 的 Outlook 用户无法登录，只有组织用户可以登录）。我原来设定的是 PersonalMicrosoftAccount，但会引发授权的 invalid_request 错误。

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

Chips and Cheese
Intel Granite Rapids: A Step in the Right Direction (Video)
#ChipAndCheese

Intel’s brand new Granite Rapids series of CPUs is launching today and in an attempt of trying some new types of content we recorded an off the cuff and first thoughts video during the event Intel had up in Oregon.

This is a new type of video that I thought you guys may enjoy, and if you do please comment either here on this page or on the YouTube video itself on what we could improve with this format. There will also be an interview with Ronak Singhal, Intel Senior Fellow, coming up in the next few days.

Hope y’all enjoy!

iframe (www.youtube.com)

We would like to thank Intel for flying us out to their event up in Hillsboro, OR.

If you like our articles and journalism, and you want to support us in our endeavors, then consider heading over to our Patreon or our PayPal if you want to toss a few bucks our way. If you would like to talk with the Chips and Cheese staff and the people behind the scenes, then consider joining our Discord.

source